Diagnostic procedure
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STEP
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INSPECTION
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RESULTS
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ACTION
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|---|---|---|---|
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1
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Connect the WDS or equivalent to the DLC-2.
Access ECT PID.
Start and warm up the engine to normal operating temperature.
Is ECT PID reading between 82-112°C {180-234°F}?
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Yes
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Go to the next step.
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No
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ECT PID is higher than 112°C {234°F}:
Go to symptom troubleshooting "No.17 Cooling system concerns - Overheating".
ECT PID is less than 82°C {180°F}:
Go to symptom troubleshooting "No.18 Cooling system concerns - Runs cold".
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2
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Connect the WDS or equivalent to the DLC-2.
Retrieve any continuous memory DTCs.
Are there any DTCs displayed?
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Yes
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DTC is displayed:
Go to the applicable DTC inspection.
(See DTC TABLE [L3].)
|
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No
|
No DTC is displayed:
Go to the next step.
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3
|
Connect the WDS or equivalent to the DLC-2.
Access AC_REQ, COLP, CPP, CPP/PNP and PSP PIDs.
Monitor each PID.
(See PCM INSPECTION [L3].)
Are PIDs normal?
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Yes
|
Go to the next step.
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No
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AC_REQ PID: Inspect the A/C switch, the refrigerant pressure switch and the fan switch.
COLP PID: Inspect the refrigerant pressure switch (middle pressure).
CPP PID: Inspect the clutch pedal position switch.
CPP/PNP PID: Inspect the neutral switch.
PSP PID: Inspect the P/S pressure switch.
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4
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Is there air leakage felt or heard at the intake-air system components while racing the engine to higher speed?
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Yes
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Repair or replace the parts if necessary.
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No
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Verify the accelerator cable free play.
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5
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Verify test results.
• If normal, return to diagnostic index to service any additional symptoms.
• If malfunction remains, replace PCM.
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