DETERMINING SHORT TO POWER SUPPLY LOCATION (HS-CAN) [MZR 1.6 (L.H.D.)]
id100232000700
System Wiring Diagram
am3zzw00019473
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Determination Procedure
Step |
Inspection |
Action |
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---|---|---|---|
1
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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 2K and 2I
• 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.
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No
|
Go to Step 9.
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2
|
INSPECT CAN LINE BETWEEN PCM AND FRONT BODY CONTROL MODULE (FBCM) FOR SHORT TO POWER SUPPLY
• Measure the voltage at PCM terminals 1BE and 1AZ.
• 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).
|
No
|
Go to the next step.
|
||
3
|
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 2K and 2I
• 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 the front body control module (FBCM) because the wiring harness is shorted to the power supply.
|
||
4
|
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 6.
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No
|
Go to the next step.
|
||
5
|
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.
• Disconnect the AFS control module / auto leveling control module or adaptive LED headlights control module connector.
• 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
|
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.
|
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.
|
||
6
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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.
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||
7
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INSPECT CAN LINE BETWEEN DSC HU/CM OR ABS HU/CM AND CONNECTOR C-60 FOR SHORT TO POWER SUPPLY
• Measure the voltage at DSC HU/CM terminals AF and AC (with DSC).
• Measure the voltage at ABS HU/CM terminals H and L (without DSC).
• Is the voltage between 1.5 — 3.5 V?
|
Yes
|
Go to Step 31.
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No
|
Go to the next step.
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||
8
|
INSPECT DSC HU/CM OR ABS HU/CM FOR SHORT TO POWER SUPPLY
• Switch the ignition off.
• Disconnect the negative battery cable.
• Disconnect the DSC HU/CM or ABS 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 or ABS HU/CM because there is a short to the power supply in the DSC HU/CM or ABS HU/CM.
|
No
|
Repair or replace the wiring harness between DSC HU/CM or ABS HU/CM and connector C-60 because the wiring harness is shorted to the power supply.
|
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9
|
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.
|
||
10
|
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
|
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.
|
||
11
|
INSPECT CAN LINE BETWEEN CONNECTOR C-12 AND CONNECTOR C-33 FOR SHORT TO POWER SUPPLY
• Switch the ignition off.
• Disconnect the negative battery cable.
• Disconnect connector C-33.
• Connect connector C-12.
• Connect connector C-03.
• Cnnect connector 2 which has front body control module (FBCM) terminals 2K and 2I
• Connect the negative battery cable.
• Switch the ignition ON (engine off).
• Measure the voltage at PCM terminals 1BE and 1AZ.
• 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-12 and connector C-33 because the wiring harness is shorted to the power supply.
|
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12
|
INSPECT CAN LINE BETWEEN CONNECTOR C-33 AND DLC-2 FOR SHORT TO POWER SUPPLY
• 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.
|
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13
|
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 15.
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No
|
Go to the next step.
|
||
14
|
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.
|
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.
|
||
15
|
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 17.
|
No
|
Go to the next step.
|
||
16
|
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.
|
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.
|
||
17
|
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.
|
||
18
|
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 20.
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No
|
Go to the next step.
|
||
19
|
INSPECT CONNECTIVITY MASTER UNIT (CMU) FOR SHORT TO POWER SUPPLY
• Switch the ignition off.
• Disconnect the negative battery cable.
• Disconnect the connectivity master unit (CMU) 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 connectivity master unit (CMU) because there is a short to the power supply in the connectivity master unit (CMU).
|
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.
|
||
20
|
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 23.
|
No
|
Go to the next step.
|
||
21
|
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.
|
||
22
|
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.
|
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.
|
||
23
|
INSPECT CAN LINE BETWEEN INSTRUMENT CLUSTER AND CONNECTOR C-34 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 25.
|
||
24
|
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 the negative battery cable.
• Switch the ignition ON (engine off).
• Measure the voltage at SAS control module terminals 3B and 3C (wiring harness side).
• Is the voltage 0 V?
|
Yes
|
Replace the SAS control module connector because there is a short to the power supply in the SAS control module connector.
|
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.
|
||
25
|
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.
|
||
26
|
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.
|
||
27
|
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 29.
|
No
|
Go to the next step.
|
||
28
|
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.
|
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.
|
||
29
|
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.
|
||
30
|
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.
|
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.
|
||
31
|
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.
|
No
|
Repair or replace the wiring harness between the PCM and connector C-60 because the wiring harness is shorted to the power supply.
|