Diagnostic Test
WARNING: This page is about a different variant/trim than selected.
- CHECK CONNECTION ON THE KNOCK SENSOR 2 AND THE PCM-2
- Check for loose, damaged or corroded connections on the Knock Sensor 2 or on the PCM-2.
Are there any loose or damaged connections?
Yes
- Repair the wiring connections as necessary.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
No
- Go To 2
- Check for loose, damaged or corroded connections on the Knock Sensor 2 or on the PCM-2.
- WIRING CHECK BETWEEN KNOCK SENSOR 2 (K242) AND PCM-2 FOR AN OPEN CIRCUIT
- Check the wiring for an open circuit or high resistance between the Knock Sensor 2 (K242) and PIN 78 of the connector on the engine side of the PCM-2.
Is there a high resistance or open condition in the wiring?
Yes
- Repair the open circuit or high resistance in the wiring.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
No
- Go To 3
- Check the wiring for an open circuit or high resistance between the Knock Sensor 2 (K242) and PIN 78 of the connector on the engine side of the PCM-2.
- WIRING CHECK BETWEEN KNOCK SENSOR 2 (K242) AND PCM-2 FOR AN OPEN CIRCUIT
- Check the wiring for an open circuit or high resistance between the Knock Sensor 2 (K242) and PIN 99 of the connector on the engine side of the PCM-2.
Is there a high resistance or open condition in the wiring?
Yes
- Repair the open circuit or high resistance in the wiring.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
No
- Go To 4
- Check the wiring for an open circuit or high resistance between the Knock Sensor 2 (K242) and PIN 99 of the connector on the engine side of the PCM-2.
- WIRING CHECK BETWEEN KNOCK SENSOR 2 (K242) AND PCM-2 FOR A SHORT CIRCUIT
- Check for a short circuit in the wiring between the Knock Sensor 2 (K242) and PIN 78 of the connector on the engine side of the PCM-2.
Is there a short circuit in the wiring?
Yes
- Repair the short circuit in the wiring.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
No
- Go To 5
- Check for a short circuit in the wiring between the Knock Sensor 2 (K242) and PIN 78 of the connector on the engine side of the PCM-2.
- WIRING CHECK BETWEEN KNOCK SENSOR 2 (K242) AND PCM-2 FOR A SHORT CIRCUIT
- Check for a short circuit in the wiring between the Knock Sensor 2 (K242) and PIN 99 of the connector on the engine side of the PCM-2.
Is there a short circuit in the wiring?
Yes
- Repair the short circuit in the wiring.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
No
- Go To 6
- Check for a short circuit in the wiring between the Knock Sensor 2 (K242) and PIN 99 of the connector on the engine side of the PCM-2.
- KNOCK SENSOR 2 OPERATION CHECK
- Check that the Knock Sensor 2 (K242) is working properly.
Is the Knock Sensor 2 (K242) operating properly?
Yes
- Go To 7
No
- Replace the Knock Sensor 2.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
- Check that the Knock Sensor 2 (K242) is working properly.
- CHECK ENGINE CONTROL MODULE OPERATION
- Check that the PCM-2 is working properly.
Is the PCM-2 operating properly?
Yes
- End of diagnosis.
No
- Replace the PCM-2.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
- Check that the PCM-2 is working properly.