DETERMINING SHORT TO POWER SUPPLY LOCATION (HS-CAN) [SKYACTIV-D 1.5 (ATX), SKYACTIV-D 2.2 (ATX) (L.H.D.)]

id100243000700

Caution
•  Perform the following malfunction diagnosis only when it is diagnosed with a short to power supply by CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [SKYACTIV-D 1.5 (ATX), SKYACTIV-D 2.2 (ATX) (L.H.D.)].)

System Wiring Diagram

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Determination Procedure

Caution
•  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.
Note
•  If the ignition does not turn on even if the ignition is switched ON, switch the ignition ON referring to the forced ignition ON procedure. (See FORCED IGNITION ON.)

Step

Inspection

Action
1
INSPECT FOR SHORT TO POWER SUPPLY BETWEEN FRONT BODY CONTROL MODULE (FBCM) AND INSTRUMENT CLUSTER
•  Disconnect the negative battery cable.
•  Disconnect connector 2 which has front body control module (FBCM) terminals 2P and 2N
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals F and E.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Go to the next step.
No
Go to Step 14.
2
INSPECT CAN LINE BETWEEN PCM AND FRONT BODY CONTROL MODULE (FBCM) FOR SHORT TO POWER SUPPLY
•  Measure the voltage at PCM terminals 2C and 2D. (SKYACTIV-D 1.5)
•  Measure the voltage at PCM terminals 2AK and 2AL. (SKYACTIV-D 2.2)
•  Is the voltage between 1.5 — 3.5 V?
Yes
Go to the next step.
No
Go to Step 6.
3
INSPECT CAN LINE BETWEEN TCM AND FRONT BODY CONTROL MODULE (FBCM) FOR SHORT TO POWER SUPPLY
•  Measure the voltage at TCM terminals E and F.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Replace the front body control module (FBCM) because there is a short to the power supply in the front body control module (FBCM).
(See FRONT BODY CONTROL MODULE (FBCM) REMOVAL/INSTALLATION.)
No
Go to the next step.
4
INSPECT CAN LINE BETWEEN TCM AND CONNECTOR C-01 FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect connector C-01.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at TCM terminals E and F.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Repair or replace the wiring harness between the front body control module (FBCM) and connector C-01 because the wiring harness is shorted to the power supply.
No
Go to the next step.
5
INSPECT TCM FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect the TCM connector.
•  Connect connector C-01.
•  Connect connector 2 which has front body control module (FBCM) terminals 2R and 2L
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals F and E.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Replace the TCM because there is a short to the power supply in the TCM.
(See CONTROL VALVE BODY REMOVAL/INSTALLATION [FN4A-EL].)
(See CONTROL VALVE BODY REMOVAL/INSTALLATION [FW6A-EL].)
(See CONTROL VALVE BODY REMOVAL/INSTALLATION [GW6A-EL].)
(See CONTROL VALVE BODY REMOVAL/INSTALLATION [CW6A-EL].)
(See CONTROL VALVE BODY REMOVAL/INSTALLATION [EW6A-EL].)
No
Repair or replace the wiring harness between the TCM and connector C-01 because the wiring harness is shorted to the power supply.
6
INSPECT CAN LINE BETWEEN CONNECTOR C-32 AND FRONT BODY CONTROL MODULE (FBCM) FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect connector C-32.
•  Connect connector 2 which has front body control module (FBCM) terminals 2P and 2N
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals F and E.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Go to the next step.
No
Repair or replace the wiring harness between connector C-32 and front body control module (FBCM) because the wiring harness is shorted to the power supply.
7
INSPECT CAN LINE BETWEEN AFS CONTROL MODULE / AUTO LEVELING CONTROL MODULE OR ADAPTIVE LED HEADLIGHTS CONTROL MODULE AND CONNECTOR C-32 FOR SHORT TO POWER SUPPLY
•  Measure the voltage at AFS control module / auto leveling control module or adaptive LED headlights control module terminals A and B.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Go to Step 9.
No
Go to the next step.
8
INSPECT AFS CONTROL MODULE / AUTO LEVELING CONTROL MODULE OR ADAPTIVE LED HEADLIGHTS CONTROL MODULE FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Connect connector C-32.
•  Disconnect the AFS control module / auto leveling control module or adaptive LED headlights control module connector.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals F and E.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Replace the AFS control module / auto leveling control module or adaptive LED headlights control module because there is a short to the power supply 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.)
No
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 to the power supply.
9
INSPECT CAN LINE BETWEEN CONNECTOR C-60 AND CONNECTOR C-32 FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect connector C-60.
•  Connect connector C-32.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals F and E.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Go to the next step.
No
Repair or replace the wiring harness between connector C-60 and connector C-32 because the wiring harness is shorted to the power supply.
10
INSPECT CAN LINE BETWEEN DSC HU/CM AND CONNECTOR C-60 FOR SHORT TO POWER SUPPLY
•  Measure the voltage at DSC HU/CM terminals AF and AC.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Go to Step 12.
No
Go to the next step.
11
INSPECT DSC HU/CM FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect the DSC HU/CM connector.
•  Connect connector C-60
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals F and E.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Replace the DSC HU/CM because there is a short to the power supply in the DSC HU/CM.
(See DSC HU/CM REMOVAL/INSTALLATION.)
No
Repair or replace the wiring harness between DSC HU/CM and connector C-60 because the wiring harness is shorted to the power supply.
12
INSPECT CAN LINE BETWEEN RADAR UNIT AND CONNECTOR C-60 FOR SHORT TO POWER SUPPLY
•  Measure the voltage at radar unit terminals D and C.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Go to Step 40.
No
Go to the next step.
13
INSPECT RADAR UNIT FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect the radar unit connector.
•  Connect connector C-60
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals F and E.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Replace the radar unit because there is a short to the power supply in the radar unit.
(See RADAR UNIT REMOVAL/INSTALLATION.)
No
Repair or replace the wiring harness between radar unit and connector C-60 because the wiring harness is shorted to the power supply.
14
INSPECT CAN LINE BETWEEN CONNECTOR C-03 AND INSTRUMENT CLUSTER FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect connector C-03.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals F and E.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Repair or replace the wiring harness between connector C-03 and front body control module (FBCM) because the wiring harness is shorted to the power supply.
No
Go to the next step.
15
INSPECT CAN LINE BETWEEN CONNECTOR C-12 AND INSTRUMENT CLUSTER FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect connector C-12.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals F and E.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Go to the next step.
No
Go to Step 18.
16
INSPECT CAN LINE BETWEEN CONNECTOR C-12 AND FORWARD SENSING CAMERA (FSC) FOR SHORT TO POWER SUPPLY
•  Measure the voltage at the forward sensing camera (FSC) terminals M and N.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Repair or replace the wiring harness between connector C-03 and connector C-12 because the wiring harness is shorted to the power supply.
No
Go to the next step.
17
INSPECT FORWARD SENSING CAMERA (FSC) FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect the forward sensing camera (FSC) connector.
•  Connect connector C-12.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals F and E.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Replace the forward sensing camera (FSC) because there is a short to the power supply in the forward sensing camera (FSC).
(See FORWARD SENSING CAMERA (FSC) REMOVAL/INSTALLATION.)
No
Repair or replace the wiring harness between the forward sensing camera (FSC) and connector C-12 because the wiring harness is shorted to the power supply.
18
INSPECT CAN LINE BETWEEN CONNECTOR C-33 AND DLC-2 FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect connector C-33.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals F and E.
•  Is the voltage 0 V?
Yes
Go to the next step.
No
Repair or replace the wiring harness between connector C-33 and DLC-2 because the wiring harness is shorted to the power supply.
19
INSPECT CAN LINE BETWEEN EPS CONTROL MODULE AND CONNECTOR C-33 FOR SHORT TO POWER SUPPLY
•  Measure the voltage at EPS control module terminals 2B and 2D.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Go to Step 21.
No
Go to the next step.
20
INSPECT EPS CONTROL MODULE FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Connect connector C-33.
•  Disconnect the EPS control module connector.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals F and E.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Replace the EPS control module because there is a short to the power supply in the EPS control module.
(See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION.)
No
Repair or replace the wiring harness between the EPS control module and connector C-33 because the wiring harness is shorted to the power supply.
21
INSPECT CAN LINE BETWEEN START STOP UNIT AND CONNECTOR C-33 FOR SHORT TO POWER SUPPLY
•  Measure the voltage at start stop unit terminals 2M and 2O.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Go to Step 23.
No
Go to the next step.
22
INSPECT START STOP UNIT FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect the start stop unit connector.
•  Connect connector C-33.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals F and E.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Replace the start stop unit because there is a short to the power supply in the start stop unit.
(See START STOP UNIT REMOVAL/INSTALLATION.)
No
Repair or replace the wiring harness between the start stop unit and connector C-33 because the wiring harness is shorted to the power supply.
23
INSPECT CAN LINE BETWEEN CONNECTOR C-33 AND INSTRUMENT CLUSTER FOR SHORT TO POWER SUPPLY
•  Measure the voltage at instrument cluster terminals B and D.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Repair or replace the wiring harness between connector C-12 and connector C-33 because the wiring harness is shorted to the power supply.
No
Go to the next step.
24
INSPECT JB No.2 FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect connector C-34.
•  Connect connector C-33.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals F and E.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Go to the next step.
No
Replace the JB No.2 because there is a short to the power supply in the JB No.2.
25
INSPECT CAN LINE BETWEEN CONNECTIVITY MASTER UNIT (CMU) AND CONNECTOR C-34 FOR SHORT TO POWER SUPPLY
•  Measure the voltage at connectivity master unit (CMU) terminals 2E and 2F.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Go to Step 27.
No
Go to the next step.
26
INSPECT CONNECTIVITY MASTER UNIT (CMU) FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Connect connector C-34.
•  Disconnect the connectivity master unit (CMU) connector.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals F and E.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Replace the connectivity master unit (CMU) because there is a short to the power supply in the connectivity master unit (CMU).
(See CONNECTIVITY MASTER UNIT (CMU) REMOVAL/INSTALLATION.)
No
Repair or replace the wiring harness between the connectivity master unit (CMU) and connector C-34 because the wiring harness is shorted to the power supply.
27
INSPECT CAN LINE BETWEEN MAZDA ERA-GLONASS CONTROL MODULE AND CONNECTOR C-34 FOR SHORT TO POWER SUPPLY
•  Measure the voltage at MAZDA ERA-GLONASS control module terminals 1Q and 1S.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Go to Step 30.
No
Go to the next step.
28
INSPECT CAN LINE BETWEEN MAZDA ERA-GLONASS CONTROL MODULE AND CONNECTOR C-62 FOR SHORT TO POWER SUPPLY
•  Switch the ignition off (LOCK).
•  Disconnect the negative battery cable.
•  Disconnect connector C-62.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at MAZDA ERA-GLONASS control module terminals 1Q and 1S.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Repair or replace the wiring harness between connector C-62 and connector C-34 because the wiring harness is shorted to the power supply.
No
Go to the next step.
29
INSPECT MAZDA ERA-GLONASS CONTROL MODULE FOR SHORT TO POWER SUPPLY
•  Switch the ignition off (LOCK).
•  Disconnect the negative battery cable.
•  Connect connector C-34.
•  Connect connector C-62.
•  Disconnect the MAZDA ERA-GLONASS control module connector.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals E and F.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Replace the MAZDA ERA-GLONASS control module because there is a short to the power supply in the MAZDA ERA-GLONASS control module.
(See MAZDA ERA-GLONASS CONTROL MODULE REMOVAL/INSTALLATION.)
No
Repair or replace the wiring harness between the MAZDA ERA-GLONASS control module and connector C-62 because the wiring harness is shorted to the power supply.
30
INSPECT CAN LINE BETWEEN CONNECTOR C-34 AND INSTRUMENT CLUSTER FOR SHORT TO POWER SUPPLY
•  Measure the voltage at instrument cluster terminals B and D.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Go to the next step.
No
Go to Step 32.
31
INSPECT SAS CONTROL MODULE FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect the SAS control module connector.
•  Connect connector C-34.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals F and E.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Replace the SAS control module connector because there is a short to the power supply in the SAS control module connector.
(See SAS CONTROL MODULE REMOVAL/INSTALLATION.)
No
Repair or replace the wiring harness between SAS control module and connector C-34 because the wiring harness is shorted to the power supply.
32
INSPECT CAN LINE BETWEEN CONNECTOR C-34 AND CONNECTOR C-09 FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect connector C-09.
•  Connect connector C-34.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals F and E.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Go to the next step.
No
Repair or replace the wiring harness between connector C-34 and connector C-09 because the wiring harness is shorted to the power supply.
33
INSPECT CAN LINE BETWEEN CONNECTOR C-09 AND CONNECTOR C-40 FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect connector C-40.
•  Connect connector C-09.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals F and E.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Go to the next step.
No
Repair or replace the wiring harness between connector C-09 and connector C-40 because the wiring harness is shorted to the power supply.
34
INSPECT CAN LINE BETWEEN AUDIO AMPLIFIER AND CONNECTOR C-40 FOR SHORT TO POWER SUPPLY
•  Measure the voltage at audio amplifier terminals 2L and 2N.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Go to Step 36.
No
Go to the next step.
35
INSPECT AUDIO AMPLIFIER FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect the audio amplifier connector.
•  Connect connector C-40.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals F and E.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Replace the audio amplifier because there is a short to the power supply in the audio amplifier.
(See AUDIO AMPLIFIER REMOVAL/INSTALLATION.)
No
Repair or replace the wiring harness between the audio amplifier and connector C-40 because the wiring harness is shorted to the power supply.
36
INSPECT CAN LINE BETWEEN ELECTRIC PARKING BRAKE CONTROL MODULE AND CONNECTOR C-40 FOR SHORT TO POWER SUPPLY
•  Measure the voltage at electric parking brake control module terminals AD and AB.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Go to Step 38.
No
Go to the next step.
37
INSPECT ELECTRIC PARKING BRAKE CONTROL MODULE FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect the electric parking brake control module connector.
•  Connect connector C-40.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals F and E.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Replace the electric parking brake control module because there is a short to the power supply in the electric parking brake control module.
(See ELECTRIC PARKING BRAKE CONTROL MODULE REMOVAL/INSTALLATION.)
No
Repair or replace the wiring harness between the electric parking brake control module and connector C-40 because the wiring harness is shorted to the power supply.
38
INSPECT CAN LINE BETWEEN INSTRUMENT CLUSTER AND CONNECTOR C-09 FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect connector C-09.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at instrument cluster terminals B and D.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Repair or replace the wiring harness between the connector C-40 and connector C-09 because the wiring harness is shorted to the power supply.
No
Go to the next step.
39
INSPECT INSTRUMENT CLUSTER FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect the instrument cluster connector.
•  Connect connector C-40.
•  Connect connector C-09.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals F and E.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Replace the instrument cluster because there is a short to the power supply in the instrument cluster.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
No
Repair or replace the wiring harness between the instrument cluster and connector C-09 because the wiring harness is shorted to the power supply.
40
INSPECT PCM FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect the PCM connector.
•  Connect connector C-60.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals F and E.
•  Is the voltage between 1.5 — 3.5 V?
Yes
Replace the PCM because there is a short to the power supply in the PCM.
(See PCM REMOVAL/INSTALLATION [SKYACTIV-D 1.5].)
(See PCM REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
No
Repair or replace the wiring harness between the PCM and connector C-60 because the wiring harness is shorted to the power supply.