Diagnostic Procedures
- Perform Powertrain On-Board Diagnostic (OBD) System Check. After performing OBD system check, go to next step.
- Ignition on, engine off. Using scan tool, command light on and off. If light turns on and off, go to next step. If not, go to step 4).
- DTC is intermittent. If no additional DTCs are set, see DIAGNOSTIC AIDS. If any additional DTCs are set, go to applicable DTC test.
- Ignition off. Unplug PCM connector containing the light control circuit. Ignition on, engine off. If light is on, go to next step. If not, go to step 7).
- With fused jumper wire to ground, probe light control driver circuit at PCM connector. If light is on, go to next step. If not, go to step 8).
- Check for poor PCM connections and repair as necessary. If repairs were required, go to step 10). If repairs were not required, go to step 9).
- Repair short to ground in SERVICE THROTTLE SOON indicator light control circuit. Go to step 10).
- Check for the following conditions in SERVICE THROTTLE SOON indicator light control circuit:
- Opens.
- Faulty bulb.
- Faulty fuse.
After repairs, go to step 10).
- Replace PCM. Go to next step.
- Using scan tool, select DTC, CLEAR INFO. Start and warm engine to normal operating temperature. Select DTC, SPECIFIC, then enter DTC P01654. Operate vehicle within the conditions for setting this DTC. If scan tool indicates that this test ran and passed, go to next step. If scan tool does not indicate that this test ran and passed, repeat step 2).
- Using scan tool, select CAPTURE INFO, REVIEW INFO. If any undiagnosed DTC(s) are displayed, go to applicable DTC test.