Diagnostic procedure
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STEP
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INSPECTION
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ACTION
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1
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INSPECT AMBIENT TEMPERATURE SENSOR CONNECTOR
• Turn the ignition switch off.
• Disconnect the ambient temperature sensor connector.
• Inspect the ambient temperature sensor connector terminals for poor connection (such as damaged/pulled-out pins, and corrosion).
• Is there any malfunction?
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Yes
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Repair or replace the terminal, then go to Step 8.
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No
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Go to the next step.
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2
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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?
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Yes
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Repair or replace the terminal, then go to Step 8.
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No
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Go to the next step.
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3
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INSPECT AMBIENT TEMPERATURE SENSOR CIRCUIT FOR OPEN CIRCUIT
• Inspect for continuity between following terminals:
• Is there continuity?
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Yes
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Go to the next step.
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No
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Repair or replace the wiring harness for a possible open circuit, then go to Step 8.
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4
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INSPECT AMBIENT TEMPERATURE SENSOR SIGNAL CIRCUIT FOR SHORT TO GND
• Inspect for continuity between PJB terminal J-02 AD (wiring harness-side) and body GND.
• Is there continuity?
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Yes
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Repair or replace the wiring harness for a possible short to GND, then go to Step 8.
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No
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Go to the next step.
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5
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INSPECT AMBIENT TEMPERATURE SENSOR SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY
• Turn the ignition switch to the ON position (Engine off).
• Measure the voltage between PJB terminal J-02 AD (wiring harness-side) and body GND.
• Is the voltage B+?
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Yes
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Repair or replace the wiring harness for a possible short to power supply, then go to Step 8.
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No
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Go to the next step.
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6
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INSPECT AMBIENT TEMPERATURE SENSOR CIRCUIT FOR SHORT EACH OTHER
• Turn the ignition switch to the LOCK position.
• Inspect for continuity between ambient temperature sensor terminals A and B (wiring harness-side).
• Is there continuity?
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Yes
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Repair or replace the wiring harness for a possible short each other, then go to Step 8.
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No
|
Go to the next step.
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7
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INSPECT AMBIENT TEMPERATURE SENSOR
• Inspect the ambient temperature sensor.
• Is there any malfunction?
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Yes
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Replace the ambient temperature sensor, then go to the next step.
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No
|
Go to the next step.
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8
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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?
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Yes
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Replace the PJB.
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No
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Troubleshooting completed.
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