Diagnostic procedure
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STEP
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INSPECTION
|
ACTION
|
|
|---|---|---|---|
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1
|
INSPECT CLIMATE CONTROL UNIT CONNECTOR
• Turn the ignition switch off.
• Disconnect the climate control unit connector.
• Inspect the climate control unit connector terminals for poor connection (such as damaged/pulled-out pins, and corrosion).
• Is there any malfunction?
|
Yes
|
Repair or replace the terminal, then go to Step 5.
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|
No
|
Go to the next step.
|
||
|
2
|
INSPECT PJB CONNECTOR
• Disconnect the PJB connector.
• Inspect the PJB connector terminals for poor connection (such as damaged/pulled-out pins, and corrosion).
• Is there any malfunction?
|
Yes
|
Repair or replace the terminal, then go to Step 5.
|
|
No
|
Go to the next step.
|
||
|
3
|
INSPECT CLIMATE CONTROL UNIT SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY
• Turn the ignition switch to the ON position (Engine off).
• Measure the voltage between PJB terminal J-04 I (wiring harness-side) and body GND.
• Is the voltage B+?
|
Yes
|
Repair or replace the wiring harness for a possible short to power supply, then go to Step 5.
|
|
No
|
Go to the next step.
|
||
|
4
|
INSPECT CLIMATE CONTROL UNIT
• Inspect the climate control unit.
• Is there any malfunction?
|
Yes
|
Replace the climate control unit, then go to the next step.
|
|
No
|
Go to the next step.
|
||
|
5
|
VERIFY TROUBLESHOOTING COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PJB memory using the WDS or equivalent.
• Perform the self-test.
(See PJB SELF-TEST.)
• Is the same DTC present?
|
Yes
|
Replace the PJB.
|
|
No
|
DTC troubleshooting completed.
|
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