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NO.2 MIL ILLUMINATES [L3 Turbo]

id0103b4800800

2 | MIL ILLUMINATES
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DESCRIPTION | MIL illuminates incorrectly.
POSSIBLE CAUSE | • PCM illuminates for emission-related concern (DTC is stored in PCM) • Instrument cluster malfunction Note • If the MIL blinks at a steady rate, a misfire condition could possibly exist.

Diagnostic procedure

STEP | INSPECTION | RESULTS | ACTION
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1 | Connect the WDS or equivalent to the DLC. Turn the ignition switch to the ON position. Retrieve any DTCs. Is a DTC displayed? | Yes | DTC is displayed: • Go to the appropriate DTC test. (See DTC TABLE [L3 Turbo].)
No | No DTC is displayed: • Inspect for an open or short to circuit between instrument cluster terminal 2W and PCM terminal 2R. • Inspect for an open or short to circuit between instrument cluster terminal 2X and PCM terminal 2U. (See INSTRUMENT CLUSTER INSPECTION.)
2 | Verify test results. • If normal, return to the diagnostic index to service any additional symptoms. • If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the repair or diagnosis. - If the vehicle is repaired, troubleshooting is completed. - If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest.