DETERMINING SHORT BETWEEN CIRCUITS LOCATION (CAN-BUS No.1) [R.H.D.]
id100226002000
System Wiring Diagram
a30zzw00006548
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Determination Procedure
Step |
Inspection |
Action |
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1
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INSPECT BODY CONTROL MODULE (BCM) FOR SHORT BETWEEN CIRCUITS
• Switch the main power OFF.
• Disconnect the negative lead-acid battery terminal.
• Disconnect the connector 3 which has body control module (BCM) terminals 3X and 3W.
• Connect the negative lead-acid battery terminal.
• Switch the main power ON (READY off).
• Measure the voltage at body control module (BCM) terminals 3X and 3W (wiring harness side).
• Is the voltage at body control module (BCM) terminals 3X and 3W (wiring harness side) the same?
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Yes
|
Go to the next step.
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No
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Replace the body control module (BCM) because there is a short between circuits in the body control module (BCM).
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2
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INSPECT CAN LINE BETWEEN CONNECTOR C-39 AND BODY CONTROL MODULE (BCM) FOR SHORT BETWEEN CIRCUITS
• Switch the main power OFF.
• Disconnect the negative lead-acid battery terminal.
• Disconnect the connector C-39.
• Connect the connector 3 which has body control module (BCM) terminals 3X and 3W.
• Connect the negative lead-acid battery terminal.
• Switch the main power ON (READY off).
• Measure the voltage at body control module (BCM) terminals 3X and 3W.
• Is the voltage at body control module (BCM) terminals 3X and 3W the same?
|
Yes
|
Repair or replace the wiring harness between the connector C-39 and body control module (BCM) because the wiring harness is shorted between circuits.
|
No
|
Go to the next step.
|
||
3
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INSPECT CAN LINE BETWEEN EPS CONTROL MODULE AND CONNECTOR C-39 FOR SHORT BETWEEN CIRCUITS
• Switch the main power OFF.
• Disconnect the negative lead-acid battery terminal.
• Inspect for continuity between EPS control module terminals 2C and 2A.
• Is there continuity?
|
Yes
|
Go to the next step.
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No
|
Go to Step 5.
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4
|
INSPECT EPS CONTROL MODULE FOR SHORT BETWEEN CIRCUITS
• Disconnect the EPS control module connector.
• Inspect for continuity between EPS control module terminals 2C and 2A(wiring harness side).
• Is there continuity?
|
Yes
|
Repair or replace the wiring harness between the EPS control module and connector C-39 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.
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5
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INSPECT CAN LINE BETWEEN SELECTOR LEVER AND CONNECTOR C-39 FOR SHORT BETWEEN CIRCUITS
• Inspect for continuity between selector lever terminals D and B.
• Is there continuity?
|
Yes
|
Go to the next step.
|
No
|
Go to Step 7.
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6
|
INSPECT SELECTOR LEVER FOR SHORT BETWEEN CIRCUITS
• Disconnect the selector lever connector.
• Inspect for continuity between selector lever terminals D and B (wiring harness side).
• Is there continuity?
|
Yes
|
Repair or replace the wiring harness between the selector lever and connector C-39 because the wiring harness is shorted between circuits.
|
No
|
Replace the selector lever because there is a short between circuits in the selector lever.
|
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7
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INSPECT CAN LINE BETWEEN CONNECTOR C-39 AND CONNECTOR C-38 FOR SHORT BETWEEN CIRCUITS
• Disconnect the connector C-38.
• Connect the connector C-39.
• Connect the negative lead-acid battery terminal.
• Switch the main power ON (READY off).
• Measure the voltage at body control module (BCM) terminals 3X and 3W.
• Is the voltage at body control module (BCM) terminals 3X and 3W the same?
|
Yes
|
Repair or replace the wiring harness between the connector C-38 and connector C-39 because the wiring harness is shorted between circuits.
|
No
|
Go to the next step.
|
||
8
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INSPECT CAN LINE BETWEEN AUTO LEVELING CONTROL MODULE / ADAPTIVE LED HEADLIGHTS CONTROL MODULE AND CONNECTOR C-38 FOR SHORT BETWEEN CIRCUITS
• Switch the main power OFF.
• Disconnect the negative lead-acid battery terminal.
• Inspect for continuity between auto leveling control module / adaptive LED headlights control module terminals E and H.
• Is there continuity?
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Yes
|
Go to the next step.
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No
|
Go to Step 10.
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9
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INSPECT AUTO LEVELING CONTROL MODULE / ADAPTIVE LED HEADLIGHTS CONTROL MODULE FOR SHORT BETWEEN CIRCUITS
• Disconnect the auto leveling control module / adaptive LED headlights control module connector.
• Inspect for continuity between auto leveling control module / adaptive LED headlights control module terminals E and H (wiring harness side).
• Is there continuity?
|
Yes
|
Repair or replace the wiring harness between the auto leveling control module / adaptive LED headlights control module and connector C-38 because the wiring harness is shorted between circuits.
|
No
|
Replace the auto leveling control module / adaptive LED headlights control module because there is a short between circuits in the auto leveling control module / adaptive LED headlights control module.
|
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10
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INSPECT CAN LINE BETWEEN CONNECTOR C-13 AND CONNECTOR C-38 FOR SHORT BETWEEN CIRCUITS
• Disconnect the connector C-13.
• Connect the connector C-38.
• Connect the negative lead-acid battery terminal.
• Switch the main power ON (READY off).
• Measure the voltage at body control module (BCM) terminals 3X and 3W.
• Is the voltage at body control module (BCM) terminals 3X and 3W the same?
|
Yes
|
Repair or replace the wiring harness between the connector C-38 and connector C-13 because the wiring harness is shorted between circuits.
|
No
|
Go to the next step.
|
||
11
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INSPECT CAN LINE BETWEEN CONNECTOR C-21 AND CONNECTOR C-13 FOR SHORT BETWEEN CIRCUITS
• Switch the main power OFF.
• Disconnect the negative lead-acid battery terminal.
• Disconnect the connector C-21.
• Connect the connector C-13.
• Connect the negative lead-acid battery terminal.
• Switch the main power ON (READY off).
• Measure the voltage at body control module (BCM) terminals 3X and 3W.
• Is the voltage at body control module (BCM) terminals 3X and 3W the same?
|
Yes
|
Repair or replace the wiring harness between connector C-21 and connector C-13 because the wiring harness is shorted between circuits.
|
No
|
Go to the next step.
|
||
12
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INSPECT CAN LINE BETWEEN CONNECTOR C-21 AND PCM FOR SHORT BETWEEN CIRCUITS
• Measure the voltage at PCM terminals AK and AL.
• Is the voltage at PCM terminals AK and AL the same?
|
Yes
|
Go to Step 16.
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No
|
Go to the next step.
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13
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INSPECT CAN LINE BETWEEN CONNECTOR C-21 AND CONNECTORS C-71, C-72 FOR SHORT BETWEEN CIRCUITS
• Switch the main power OFF.
• Disconnect the negative lead-acid battery terminal.
• Disconnect the connectors C-71, C-72.
• Connect the connector C-21.
• Connect the negative lead-acid battery terminal.
• Switch the main power ON (READY off).
• Measure the voltage at body control module (BCM) terminals 3X and 3W.
• Is the voltage at body control module (BCM) terminals 3X and 3W the same?
|
Yes
|
Repair or replace the wiring harness between connector C-21 and connectors C-71, C-72 because the wiring harness is shorted between circuits.
|
No
|
Go to the next step.
|
||
14
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INSPECT CAN LINE BETWEEN SAS CONTROL MODULE AND CONNECTORS C-71, C-72 FOR SHORT BETWEEN CIRCUITS
• Measure the voltage at PCM terminals AK and AL.
• Is the voltage at PCM terminals AK and AL the same?
|
Yes
|
Repair or replace the wiring harness between the connectors C-71, C-72 and connector C-21 because the wiring harness is shorted between circuits.
|
No
|
Go to the next step.
|
||
15
|
INSPECT SAS CONTROL MODULE FOR SHORT BETWEEN CIRCUITS
• Switch the main power OFF.
• Disconnect the negative lead-acid battery terminal.
• Disconnect the SAS control module connector.
• Inspect for continuity between SAS control module terminals 3A and 3D (wiring harness side).
• Is there continuity?
|
Yes
|
Repair or replace the wiring harness between the SAS control module and connectors C-71, C-72 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.
|
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16
|
INSPECT CAN LINE BETWEEN CONNECTOR C-07 AND CONNECTOR C-21 FOR SHORT BETWEEN CIRCUITS
• Switch the main power OFF.
• Disconnect the negative lead-acid battery terminal.
• Disconnect the connector C-07.
• Connect the connector C-21.
• Connect the negative lead-acid battery terminal.
• Switch the main power ON (READY off).
• Measure the voltage at body control module (BCM) terminals 3X and 3W.
• Is the voltage at body control module (BCM) terminals 3X and 3W the same?
|
Yes
|
Repair or replace the wiring harness between connector C-07 and connector C-21 because the wiring harness is shorted between circuits.
|
No
|
Go to the next step.
|
||
17
|
INSPECT CAN LINE BETWEEN ELECTRONICALLY CONTROLLED BRAKE UNIT AND CONNECTOR C-07, CONNECTOR C-34 FOR SHORT BETWEEN CIRCUITS
• Switch the main power OFF.
• Disconnect the negative lead-acid battery terminal.
• Inspect for continuity between electronically controlled brake unit terminals 1AM and 1AO.
• Is there continuity?
|
Yes
|
Go to the next step.
|
No
|
Go to Step 19.
|
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18
|
INSPECT ELECTRONICALLY CONTROLLED BRAKE UNIT FOR SHORT BETWEEN CIRCUITS
• Disconnect the electronically controlled brake unit connector.
• Inspect for continuity between electronically controlled brake unit terminals 1AM and 1AO (wiring harness side).
• Is there continuity?
|
Yes
|
Repair or replace the wiring harness between the electronically controlled brake unit and connector C-07, connector C-34 because the wiring harness is shorted between circuits.
|
No
|
Replace the electronically controlled brake unit because there is a short between circuits in the electronically controlled brake unit.
|
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19
|
INSPECT CAN LINE BETWEEN CONNECTOR C-34 AND CONNECTOR C-09 FOR SHORT BETWEEN CIRCUITS
• Switch the main power OFF.
• Disconnect the negative lead-acid battery terminal.
• Disconnect the connector C-09.
• Connect the connector C-34.
• Connect the negative lead-acid battery terminal.
• Switch the main power ON (READY off).
• Measure the voltage at body control module (BCM) terminals 3X and 3W.
• Is the voltage at body control module (BCM) terminals 3X and 3W the same?
|
Yes
|
Go to Step 22.
|
No
|
Go to the next step.
|
||
20
|
INSPECT CAN LINE BETWEEN CONNECTOR C-34 AND CONNECTOR C-02 AND CONNECTOR C-09 FOR SHORT BETWEEN CIRCUITS
• Switch the main power OFF.
• Disconnect the negative lead-acid battery terminal.
• Disconnect the connector C-02.
• Switch the main power ON (READY off).
• Measure the voltage at body control module (BCM) terminals 3X and 3W.
• Is the voltage at body control module (BCM) terminals 3X and 3W the same?
|
Yes
|
Repair or replace the wiring harness between the connector C-34 and connector C-02 and connector C-09 because the wiring harness is shorted between circuits.
|
No
|
Go to the next step.
|
||
21
|
INSPECT PARKING LOCK ACTUATOR FOR SHORT BETWEEN CIRCUITS
• Switch the main power OFF.
• Disconnect the negative lead-acid battery terminal.
• Disconnect the parking lock actuator connector.
• Inspect for continuity between parking lock actuator terminals E and F (wiring harness side).
• Is there continuity?
|
Yes
|
Repair or replace the wiring harness between the parking lock actuator and connector C-02 because the wiring harness is shorted between circuits.
|
No
|
Replace the parking lock actuator because there is a short between circuits in the parking lock actuator.
|
||
22
|
INSPECT PCM FOR SHORT BETWEEN CIRCUITS
• Switch the main power OFF.
• Disconnect the negative lead-acid battery terminal.
• Disconnect the PCM connector.
• Inspect for continuity between PCM terminals AK and AL (wiring harness side).
• Is there continuity?
|
Yes
|
Repair or replace the wiring harness between the PCM and connector C-09 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.)
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