DETERMINING SHORT BETWEEN CIRCUITS LOCATION (HS-CAN) [MZR 1.6 (L.H.D.)]

• When disconnecting the connector, verify that there is no looseness, damage, deformation, corrosion, or poor connection of the connector terminals.

• When inspecting the DLC-2, touch it with a paper clip or similar thin pin without directly inserting a tester into the terminals.

• Disconnect the negative battery cable before performing any work that requires handling of connectors.

Step	Inspection	Action
1	INSPECT BETWEEN FRONT BODY CONTROL MODULE (FBCM) AND INSTRUMENT CLUSTER FOR SHORT BETWEEN CIRCUITS • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].) • Disconnect connector 2 which has front body control module (FBCM) terminals 2K and 2I. • Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].) • Switch the ignition ON (engine off). • Measure the voltage at DLC-2 terminals F and E. • Is the voltage at DLC-2 terminals F and E the same?	Yes	Go to Step 9.
No	Go to the next step.
2	INSPECT FRONT BODY CONTROL MODULE (FBCM) FOR SHORT BETWEEN CIRCUITS • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].) • Inspect for continuity between front body control module (FBCM) terminals 2K and 2I. • Is there continuity?	Yes	Replace the front body control module (FBCM) because there is a short between circuits in the front body control module (FBCM). (See FRONT BODY CONTROL MODULE (FBCM) REMOVAL/INSTALLATION.)
No	Go to the next step.
3	INSPECT BETWEEN CONNECTOR C-32 AND FRONT BODY CONTROL MODULE (FBCM) FOR SHORT BETWEEN CIRCUITS • Disconnect connector C-32. • Connect connector 2 which has front body control module (FBCM) terminals 2K and 2I. • Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].) • Switch the ignition ON (engine off). • Measure the voltage at DLC-2 terminals F and E. • Is the voltage at DLC-2 terminals F and E the same?	Yes	Repair or replace the wiring harness between connector C-32 and front body control module (FBCM) because the wiring harness is shorted between circuits.
No	Go to the next step.
4	INSPECT BETWEEN AFS CONTROL MODULE / AUTO LEVELING CONTROL MODULE OR ADAPTIVE LED HEADLIGHTS CONTROL MODULE AND CONNECTOR C-32 FOR SHORT BETWEEN CIRCUITS • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].) • Inspect for continuity between AFS control module / auto leveling control module or adaptive LED headlights control module terminals A and B. • Is there continuity?	Yes	Go to the next step.
No	Go to Step 6.
5	INSPECT AFS CONTROL MODULE / AUTO LEVELING CONTROL MODULE OR ADAPTIVE LED HEADLIGHTS CONTROL MODULE FOR SHORT BETWEEN CIRCUITS • Disconnect the AFS control module / auto leveling control module or adaptive LED headlights control module connector. • Inspect for continuity between AFS control module / auto leveling control module or adaptive LED headlights control module terminals A and B (wiring harness side). • Is there continuity?	Yes	Repair or replace the wiring harness between the AFS control module / auto leveling control module or adaptive LED headlights control module and connector C-32 because the wiring harness is shorted between circuits.
No	Replace the AFS control module / auto leveling control module or adaptive LED headlights control module because there is a short between circuits in the AFS control module / auto leveling control module or adaptive LED headlights control module. (See ADAPTIVE LED HEADLIGHTS CONTROL MODULE REMOVAL/INSTALLATION.) (See ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE REMOVAL/INSTALLATION.) (See AUTO LEVELING CONTROL MODULE REMOVAL/INSTALLATION.)
6	INSPECT BETWEEN CONNECTOR C-60 AND CONNECTOR C-32 FOR SHORT BETWEEN CIRCUITS • Disconnect connector C-60. • Connect connector C-32. • Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].) • Switch the ignition ON (engine off). • Measure the voltage at DLC-2 terminals F and E. • Is the voltage at DLC-2 terminals F and E the same?	Yes	Repair or replace the wiring harness between connector C-60 and connector C-32 because the wiring harness is shorted between circuits.
No	Go to the next step.
7	INSPECT BETWEEN DSC HU/CM OR ABS HU/CM AND CONNECTOR C-60 FOR SHORT BETWEEN CIRCUITS • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].) • Inspect for continuity between DSC HU/CM terminals AF and AC (with DSC). • Inspect for continuity between ABS HU/CM terminals H and L. (without DSC) • Is there continuity?	Yes	Go to the next step.
No	Go to Step 31.
8	INSPECT DSC HU/CM OR ABS HU/CM FOR SHORT BETWEEN CIRCUITS • Disconnect the DSC HU/CM or ABS HU/CM connector. • Inspect for continuity between DSC HU/CM terminals AF and AC (wiring harness side) (with DSC). • Inspect for continuity between ABS HU/CM terminals H and L. (wiring harness side) (without DSC) • Is there continuity?	Yes	Repair or replace the wiring harness between the DSC HU/CM or ABS HU/CM and connector C-60 because the wiring harness is shorted between circuits.
No	Replace the DSC HU/CM or ABS HU/CM because there is a short between circuits in the DSC HU/CM or ABS HU/CM. (See DSC HU/CM REMOVAL/INSTALLATION.) (See ABS HU/CM REMOVAL/INSTALLATION.)
9	INSPECT BETWEEN CONNECTOR C-03 AND INSTRUMENT CLUSTER FOR SHORT BETWEEN CIRCUITS • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].) • Disconnect connector C-03. • Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].) • Switch the ignition ON (engine off). • Measure the voltage at DLC-2 terminals F and E. • Is the voltage at DLC-2 terminals F and E the same?	Yes	Go to the next step.
No	Repair or replace the wiring harness between front body control module (FBCM) and connector C-03 because the wiring harness is shorted between circuits.
10	INSPECT BETWEEN CONNECTOR C-12 AND INSTRUMENT CLUSTER FOR SHORT BETWEEN CIRCUITS • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].) • Disconnect connector C-12. • Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].) • Switch the ignition ON (engine off). • Measure the voltage at DLC-2 terminals F and E. • Is the voltage at DLC-2 terminals F and E the same?	Yes	Go to the next step.
No	Repair or replace the wiring harness between connector C-03 and connector C-12 because the wiring harness is shorted between circuits.
11	INSPECT BETWEEN CONNECTOR C-12 AND CONNECTOR C-33 FOR SHORT BETWEEN CIRCUITS • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].) • Disconnect connector C-33. • Connect connector C-12. • Connect connector C-03. • Connect connector 2 which has front body control module (FBCM) terminals 2P and 2N. • Inspect for continuity between front body control module (FBCM) terminals 2P and 2N. • Is there continuity?	Yes	Repair or replace the wiring harness between connector C-12 and connector C-33 because the wiring harness is shorted between circuits.
No	Go to the next step.
12	INSPECT BETWEEN CONNECTOR C-33 AND DLC-2 FOR SHORT BETWEEN CIRCUITS • Inspect for continuity between DLC-2 terminals F and E. • Is there continuity?	Yes	Repair or replace the wiring harness between connector C-33 and DLC-2 because the wiring harness is shorted between circuits.
No	Go to the next step.
13	INSPECT BETWEEN EPS CONTROL MODULE AND CONNECTOR C-33 FOR SHORT BETWEEN CIRCUITS • Inspect for continuity between EPS control module terminals 2B and 2D. • Is there continuity?	Yes	Go to the next step.
No	Go to Step 15.
14	INSPECT EPS CONTROL MODULE FOR SHORT BETWEEN CIRCUITS • Disconnect the EPS control module connector. • Inspect for continuity between EPS control module terminals 2B and 2D (wiring harness side). • Is there continuity?	Yes	Repair or replace the wiring harness between the EPS control module and connector C-33 because the wiring harness is shorted between circuits.
No	Replace the EPS control module because there is a short between circuits in the EPS control module. (See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION.)
15	INSPECT BETWEEN START STOP UNIT AND CONNECTOR C-33 FOR SHORT BETWEEN CIRCUITS • Inspect for continuity between start stop unit terminals 2M and 2O. • Is there continuity?	Yes	Go to the next step.
No	Go to Step 17.
16	INSPECT START STOP UNIT FOR SHORT BETWEEN CIRCUITS • Disconnect the start stop unit connector. • Inspect for continuity between start stop unit terminals 2M and 2O (wiring harness side). • Is there continuity?	Yes	Repair or replace the wiring harness between the start stop unit and connector C-33 because the wiring harness is shorted between circuits.
No	Replace the start stop unit because there is a short between circuits in the start stop unit. (See START STOP UNIT REMOVAL/INSTALLATION.)
17	INSPECT JB No.2 FOR SHORT BETWEEN CIRCUITS • Connect connector C-33. • Disconnect connector C-34. • Inspect for continuity between DLC-2 terminals F and E. • Is there continuity?	Yes	Replace the JB No.2 because there is a short between circuits in the JB No.2.
No	Go to the next step.
18	INSPECT BETWEEN CONNECTIVITY MASTER UNIT (CMU) AND CONNECTOR C-34 FOR SHORT BETWEEN CIRCUITS • Inspect for continuity between connectivity master unit (CMU) terminals 2E and 2F. • Is there continuity?	Yes	Go to the next step.
No	Go to Step 20.
19	INSPECT CONNECTIVITY MASTER UNIT (CMU) FOR SHORT BETWEEN CIRCUITS • Disconnect the connectivity master unit (CMU). • Inspect for continuity between connectivity master unit (CMU) terminals 2E and 2F (wiring harness side). • Is there continuity?	Yes	Repair or replace the wiring harness between connectivity master unit (CMU) and connector C-34 because the wiring harness is shorted between circuits.
No	Replace the connectivity master unit (CMU) because there is a short between circuits in the connectivity master unit (CMU). (See CONNECTIVITY MASTER UNIT (CMU) REMOVAL/INSTALLATION.)
20	INSPECT BETWEEN MAZDA ERA-GLONASS CONTROL MODULE AND CONNECTOR C-34 FOR SHORT BETWEEN CIRCUITS • Inspect for continuity between MAZDA ERA-GLONASS control module terminals 1Q and 1S. • Is there continuity?	Yes	Go to the next step.
No	Go to Step 23.
21	INSPECT BETWEEN MAZDA ERA-GLONASS CONTROL MODULE AND CONNECTOR C-62 FOR SHORT BETWEEN CIRCUITS • Disconnect connector C-62. • Inspect for continuity between MAZDA ERA-GLONASS control module terminals 1Q and 1S. • Is there continuity?	Yes	Go to the next step.
No	Repair or replace the wiring harness between connector C-62 and connector C-34 because the wiring harness is shorted between circuits.
22	INSPECT MAZDA ERA-GLONASS CONTROL MODULE FOR SHORT BETWEEN CIRCUITS • Disconnect the MAZDA ERA-GLONASS control module connector. • Inspect for continuity between MAZDA ERA-GLONASS control module terminals 1Q and 1S (wiring harness side) • Is there continuity?	Yes	Repair or replace the wiring harness between the MAZDA ERA-GLONASS control module and connector C-62 because the wiring harness is shorted between circuits.
No	Replace the MAZDA ERA-GLONASS control module because there is a short between circuits in the MAZDA ERA-GLONASS control module. (See MAZDA ERA-GLONASS CONTROL MODULE REMOVAL/INSTALLATION.)
23	INSPECT BETWEEN SAS CONTORL MODULE AND CONNECTOS C-34 FOR SHORT BETWEEN CIRCUITS • Inspect for continuity between SAS control module terminals 3B and 3C. • Is there continuity?	Yes	Go to the next step.
No	Go to Step 25.
24	INSPECT SAS CONTORL MODULE FOR SHORT BETWEEN CIRCUITS • Disconnect the SAS control module. • Inspect for continuity between SAS control module terminals 3B and 3C (wiring harness side). • Is there continuity?	Yes	Repair or replace the wiring harness between SAS control module and connector C-34 because the wiring harness is shorted between circuits.
No	Replace the SAS control module because there is a short between circuits in the SAS control module. (See SAS CONTROL MODULE REMOVAL/INSTALLATION.)
25	INSPECT BETWEEN CONNECTOR C-09 AND CONNECTOR C-34 FOR SHORT BETWEEN CIRCUITS • Disconnect connector C-09. • Connect connector C-34. • Inspect for continuity between DLC-2 terminals F and E. • Is there continuity?	Yes	Repair or replace the wiring harness between connector C-34 and connector C-09 because the wiring harness is shorted between circuits.
No	Go to the next step.
26	INSPECT BETWEEN AUDIO AMPLIFIER AND CONNECTOR C-09 FOR SHORT BETWEEN CIRCUITS • Inspect for continuity between audio amplifier terminals 2L and 2N. • Is there continuity?	Yes	Go to the next step.
No	Go to Step 30.
27	INSPECT BETWEEN CONNECTOR C-09 AND CONNECTOR C-40 FOR SHORT BETWEEN CIRCUITS • Disconnect connector C-40. • Connect connector C-09. • Inspect for continuity between DLC-2 terminals F and E. • Is there continuity?	Yes	Repair or replace the wiring harness between connector C-09 and connector C-40 because the wiring harness is shorted between circuits.
No	Go to the next step.
28	INSPECT BETWEEN AUDIO AMPLIFIER AND CONNECTOR C-40 FOR SHORT BETWEEN CIRCUITS • Inspect for continuity between audio amplifier terminals 2L and 2N. • Is there continuity?	Yes	Go to the next step.
No	Repair or replace the wiring harness between connector C-40 and connector C-09 because the wiring harness is shorted between circuits.
29	INSPECT AUDIO AMPLIFIER FOR SHORT BETWEEN CIRCUITS • Disconnect the audio amplifier connector. • Inspect for continuity between audio amplifier terminals 2L and 2N (wiring harness side). • Is there continuity?	Yes	Repair or replace the wiring harness between the audio amplifier and connector C-40 because the wiring harness is shorted between circuits.
No	Replace the audio amplifier because there is a short between circuits in the audio amplifier. (See AUDIO AMPLIFIER REMOVAL/INSTALLATION.)
30	INSPECT INSTRUMENT CLUSTER FOR SHORT BETWEEN CIRCUITS • Disconnect the instrument cluster connector. • Inspect for continuity between instrument cluster terminals B and D (wiring harness side). • Is there continuity?	Yes	Repair or replace the wiring harness between the instrument cluster and connector C-09 because the wiring harness is shorted between circuits.
No	Replace the instrument cluster because there is a short between circuits in the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
31	INSPECT PCM FOR SHORT BETWEEN CIRCUITS • Disconnect the PCM connector. • Inspect for continuity between PCM terminals 1BE and 1AZ (wiring harness side). • Is there continuity?	Yes	Repair or replace the wiring harness between the PCM and connector C-60 because the wiring harness is shorted between circuits.
No	Replace the PCM because there is a short between circuits in the PCM. (See PCM REMOVAL/INSTALLATION [MZR 1.6].)

Step

Inspection

Action

INSPECT BETWEEN FRONT BODY CONTROL MODULE (FBCM) AND INSTRUMENT CLUSTER FOR SHORT BETWEEN CIRCUITS

• Disconnect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].)

• Disconnect connector 2 which has front body control module (FBCM) terminals 2K and 2I.

• Connect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].)

• Switch the ignition ON (engine off).

• Measure the voltage at DLC-2 terminals F and E.

• Is the voltage at DLC-2 terminals F and E the same?

Yes

Go to Step 9.

Go to the next step.

INSPECT FRONT BODY CONTROL MODULE (FBCM) FOR SHORT BETWEEN CIRCUITS

• Switch the ignition off.

• Disconnect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].)

• Inspect for continuity between front body control module (FBCM) terminals 2K and 2I.

• Is there continuity?

Yes

Replace the front body control module (FBCM) because there is a short between circuits in the front body control module (FBCM).

(See FRONT BODY CONTROL MODULE (FBCM) REMOVAL/INSTALLATION.)

Go to the next step.

INSPECT BETWEEN CONNECTOR C-32 AND FRONT BODY CONTROL MODULE (FBCM) FOR SHORT BETWEEN CIRCUITS

• Disconnect connector C-32.

• Connect connector 2 which has front body control module (FBCM) terminals 2K and 2I.

• Connect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].)

• Switch the ignition ON (engine off).

• Measure the voltage at DLC-2 terminals F and E.

• Is the voltage at DLC-2 terminals F and E the same?

Yes

Repair or replace the wiring harness between connector C-32 and front body control module (FBCM) because the wiring harness is shorted between circuits.

Go to the next step.

INSPECT BETWEEN AFS CONTROL MODULE / AUTO LEVELING CONTROL MODULE OR ADAPTIVE LED HEADLIGHTS CONTROL MODULE AND CONNECTOR C-32 FOR SHORT BETWEEN CIRCUITS

• Switch the ignition off.

• Disconnect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].)

• Inspect for continuity between AFS control module / auto leveling control module or adaptive LED headlights control module terminals A and B.

• Is there continuity?

Yes

Go to the next step.

Go to Step 6.

INSPECT AFS CONTROL MODULE / AUTO LEVELING CONTROL MODULE OR ADAPTIVE LED HEADLIGHTS CONTROL MODULE FOR SHORT BETWEEN CIRCUITS

• Disconnect the AFS control module / auto leveling control module or adaptive LED headlights control module connector.

• Inspect for continuity between AFS control module / auto leveling control module or adaptive LED headlights control module terminals A and B (wiring harness side).

• Is there continuity?

Yes

Repair or replace the wiring harness between the AFS control module / auto leveling control module or adaptive LED headlights control module and connector C-32 because the wiring harness is shorted between circuits.

Replace the AFS control module / auto leveling control module or adaptive LED headlights control module because there is a short between circuits in the AFS control module / auto leveling control module or adaptive LED headlights control module.

(See ADAPTIVE LED HEADLIGHTS CONTROL MODULE REMOVAL/INSTALLATION.)

(See ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE REMOVAL/INSTALLATION.)

(See AUTO LEVELING CONTROL MODULE REMOVAL/INSTALLATION.)

INSPECT BETWEEN CONNECTOR C-60 AND CONNECTOR C-32 FOR SHORT BETWEEN CIRCUITS

• Disconnect connector C-60.

• Connect connector C-32.

• Connect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].)

• Switch the ignition ON (engine off).

• Measure the voltage at DLC-2 terminals F and E.

• Is the voltage at DLC-2 terminals F and E the same?

Yes

Repair or replace the wiring harness between connector C-60 and connector C-32 because the wiring harness is shorted between circuits.

Go to the next step.

INSPECT BETWEEN DSC HU/CM OR ABS HU/CM AND CONNECTOR C-60 FOR SHORT BETWEEN CIRCUITS

• Switch the ignition off.

• Disconnect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].)

• Inspect for continuity between DSC HU/CM terminals AF and AC (with DSC).

• Inspect for continuity between ABS HU/CM terminals H and L. (without DSC)

• Is there continuity?

Yes

Go to the next step.

Go to Step 31.

INSPECT DSC HU/CM OR ABS HU/CM FOR SHORT BETWEEN CIRCUITS

• Disconnect the DSC HU/CM or ABS HU/CM connector.

• Inspect for continuity between DSC HU/CM terminals AF and AC (wiring harness side) (with DSC).

• Inspect for continuity between ABS HU/CM terminals H and L. (wiring harness side) (without DSC)

• Is there continuity?

Yes

Repair or replace the wiring harness between the DSC HU/CM or ABS HU/CM and connector C-60 because the wiring harness is shorted between circuits.

Replace the DSC HU/CM or ABS HU/CM because there is a short between circuits in the DSC HU/CM or ABS HU/CM.

(See DSC HU/CM REMOVAL/INSTALLATION.)

(See ABS HU/CM REMOVAL/INSTALLATION.)

INSPECT BETWEEN CONNECTOR C-03 AND INSTRUMENT CLUSTER FOR SHORT BETWEEN CIRCUITS

• Switch the ignition off.

• Disconnect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].)

• Disconnect connector C-03.

• Connect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].)

• Switch the ignition ON (engine off).

• Measure the voltage at DLC-2 terminals F and E.

• Is the voltage at DLC-2 terminals F and E the same?

Yes

Go to the next step.

Repair or replace the wiring harness between front body control module (FBCM) and connector C-03 because the wiring harness is shorted between circuits.

INSPECT BETWEEN CONNECTOR C-12 AND INSTRUMENT CLUSTER FOR SHORT BETWEEN CIRCUITS

• Switch the ignition off.

• Disconnect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].)

• Disconnect connector C-12.

• Connect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].)

• Switch the ignition ON (engine off).

• Measure the voltage at DLC-2 terminals F and E.

• Is the voltage at DLC-2 terminals F and E the same?

Yes

Go to the next step.

Repair or replace the wiring harness between connector C-03 and connector C-12 because the wiring harness is shorted between circuits.

INSPECT BETWEEN CONNECTOR C-12 AND CONNECTOR C-33 FOR SHORT BETWEEN CIRCUITS

• Switch the ignition off.

• Disconnect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].)

• Disconnect connector C-33.

• Connect connector C-12.

• Connect connector C-03.

• Connect connector 2 which has front body control module (FBCM) terminals 2P and 2N.

• Inspect for continuity between front body control module (FBCM) terminals 2P and 2N.

• Is there continuity?

Yes

Repair or replace the wiring harness between connector C-12 and connector C-33 because the wiring harness is shorted between circuits.

Go to the next step.

INSPECT BETWEEN CONNECTOR C-33 AND DLC-2 FOR SHORT BETWEEN CIRCUITS

• Inspect for continuity between DLC-2 terminals F and E.

• Is there continuity?

Yes

Repair or replace the wiring harness between connector C-33 and DLC-2 because the wiring harness is shorted between circuits.

Go to the next step.

INSPECT BETWEEN EPS CONTROL MODULE AND CONNECTOR C-33 FOR SHORT BETWEEN CIRCUITS

• Inspect for continuity between EPS control module terminals 2B and 2D.

• Is there continuity?

Yes

Go to the next step.

Go to Step 15.

INSPECT EPS CONTROL MODULE FOR SHORT BETWEEN CIRCUITS

• Disconnect the EPS control module connector.

• Inspect for continuity between EPS control module terminals 2B and 2D (wiring harness side).

• Is there continuity?

Yes

Repair or replace the wiring harness between the EPS control module and connector C-33 because the wiring harness is shorted between circuits.

Replace the EPS control module because there is a short between circuits in the EPS control module.

(See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION.)

INSPECT BETWEEN START STOP UNIT AND CONNECTOR C-33 FOR SHORT BETWEEN CIRCUITS

• Inspect for continuity between start stop unit terminals 2M and 2O.

• Is there continuity?

Yes

Go to the next step.

Go to Step 17.

INSPECT START STOP UNIT FOR SHORT BETWEEN CIRCUITS

• Disconnect the start stop unit connector.

• Inspect for continuity between start stop unit terminals 2M and 2O (wiring harness side).

• Is there continuity?

Yes

Repair or replace the wiring harness between the start stop unit and connector C-33 because the wiring harness is shorted between circuits.

Replace the start stop unit because there is a short between circuits in the start stop unit.

(See START STOP UNIT REMOVAL/INSTALLATION.)

INSPECT JB No.2 FOR SHORT BETWEEN CIRCUITS

• Connect connector C-33.

• Disconnect connector C-34.

• Inspect for continuity between DLC-2 terminals F and E.

• Is there continuity?

Yes

Replace the JB No.2 because there is a short between circuits in the JB No.2.

Go to the next step.

INSPECT BETWEEN CONNECTIVITY MASTER UNIT (CMU) AND CONNECTOR C-34 FOR SHORT BETWEEN CIRCUITS

• Inspect for continuity between connectivity master unit (CMU) terminals 2E and 2F.

• Is there continuity?

Yes

Go to the next step.

Go to Step 20.

INSPECT CONNECTIVITY MASTER UNIT (CMU) FOR SHORT BETWEEN CIRCUITS

• Disconnect the connectivity master unit (CMU).

• Inspect for continuity between connectivity master unit (CMU) terminals 2E and 2F (wiring harness side).

• Is there continuity?

Yes

Repair or replace the wiring harness between connectivity master unit (CMU) and connector C-34 because the wiring harness is shorted between circuits.

Replace the connectivity master unit (CMU) because there is a short between circuits in the connectivity master unit (CMU).

(See CONNECTIVITY MASTER UNIT (CMU) REMOVAL/INSTALLATION.)

INSPECT BETWEEN MAZDA ERA-GLONASS CONTROL MODULE AND CONNECTOR C-34 FOR SHORT BETWEEN CIRCUITS

• Inspect for continuity between MAZDA ERA-GLONASS control module terminals 1Q and 1S.

• Is there continuity?

Yes

Go to the next step.

Go to Step 23.

INSPECT BETWEEN MAZDA ERA-GLONASS CONTROL MODULE AND CONNECTOR C-62 FOR SHORT BETWEEN CIRCUITS

• Disconnect connector C-62.

• Inspect for continuity between MAZDA ERA-GLONASS control module terminals 1Q and 1S.

• Is there continuity?

Yes

Go to the next step.

Repair or replace the wiring harness between connector C-62 and connector C-34 because the wiring harness is shorted between circuits.

INSPECT MAZDA ERA-GLONASS CONTROL MODULE FOR SHORT BETWEEN CIRCUITS

• Disconnect the MAZDA ERA-GLONASS control module connector.

• Inspect for continuity between MAZDA ERA-GLONASS control module terminals 1Q and 1S (wiring harness side)

• Is there continuity?

Yes

Repair or replace the wiring harness between the MAZDA ERA-GLONASS control module and connector C-62 because the wiring harness is shorted between circuits.

Replace the MAZDA ERA-GLONASS control module because there is a short between circuits in the MAZDA ERA-GLONASS control module.

(See MAZDA ERA-GLONASS CONTROL MODULE REMOVAL/INSTALLATION.)

INSPECT BETWEEN SAS CONTORL MODULE AND CONNECTOS C-34 FOR SHORT BETWEEN CIRCUITS

• Inspect for continuity between SAS control module terminals 3B and 3C.

• Is there continuity?

Yes

Go to the next step.

Go to Step 25.

INSPECT SAS CONTORL MODULE FOR SHORT BETWEEN CIRCUITS

• Disconnect the SAS control module.

• Inspect for continuity between SAS control module terminals 3B and 3C (wiring harness side).

• Is there continuity?

Yes

Repair or replace the wiring harness between SAS control module and connector C-34 because the wiring harness is shorted between circuits.

Replace the SAS control module because there is a short between circuits in the SAS control module.

(See SAS CONTROL MODULE REMOVAL/INSTALLATION.)

INSPECT BETWEEN CONNECTOR C-09 AND CONNECTOR C-34 FOR SHORT BETWEEN CIRCUITS

• Disconnect connector C-09.

• Connect connector C-34.

• Inspect for continuity between DLC-2 terminals F and E.

• Is there continuity?

Yes

Repair or replace the wiring harness between connector C-34 and connector C-09 because the wiring harness is shorted between circuits.

Go to the next step.

INSPECT BETWEEN AUDIO AMPLIFIER AND CONNECTOR C-09 FOR SHORT BETWEEN CIRCUITS

• Inspect for continuity between audio amplifier terminals 2L and 2N.

• Is there continuity?

Yes

Go to the next step.

Go to Step 30.

INSPECT BETWEEN CONNECTOR C-09 AND CONNECTOR C-40 FOR SHORT BETWEEN CIRCUITS

• Disconnect connector C-40.

• Connect connector C-09.

• Inspect for continuity between DLC-2 terminals F and E.

• Is there continuity?

Yes

Repair or replace the wiring harness between connector C-09 and connector C-40 because the wiring harness is shorted between circuits.

Go to the next step.

INSPECT BETWEEN AUDIO AMPLIFIER AND CONNECTOR C-40 FOR SHORT BETWEEN CIRCUITS

• Inspect for continuity between audio amplifier terminals 2L and 2N.

• Is there continuity?

Yes

Go to the next step.

Repair or replace the wiring harness between connector C-40 and connector C-09 because the wiring harness is shorted between circuits.

INSPECT AUDIO AMPLIFIER FOR SHORT BETWEEN CIRCUITS

• Disconnect the audio amplifier connector.

• Inspect for continuity between audio amplifier terminals 2L and 2N (wiring harness side).

• Is there continuity?

Yes

Repair or replace the wiring harness between the audio amplifier and connector C-40 because the wiring harness is shorted between circuits.

Replace the audio amplifier because there is a short between circuits in the audio amplifier.

(See AUDIO AMPLIFIER REMOVAL/INSTALLATION.)

INSPECT INSTRUMENT CLUSTER FOR SHORT BETWEEN CIRCUITS

• Disconnect the instrument cluster connector.

• Inspect for continuity between instrument cluster terminals B and D (wiring harness side).

• Is there continuity?

Yes

Repair or replace the wiring harness between the instrument cluster and connector C-09 because the wiring harness is shorted between circuits.

Replace the instrument cluster because there is a short between circuits in the instrument cluster.

(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

INSPECT PCM FOR SHORT BETWEEN CIRCUITS

• Disconnect the PCM connector.

• Inspect for continuity between PCM terminals 1BE and 1AZ (wiring harness side).

• Is there continuity?

Yes

Repair or replace the wiring harness between the PCM and connector C-60 because the wiring harness is shorted between circuits.

Replace the PCM because there is a short between circuits in the PCM.

(See PCM REMOVAL/INSTALLATION [MZR 1.6].)