P0340

DTC P0340: CMP Sensor A No Signal*

NOTE: Information marked with an asterisk (*) applies to '04 model.

1. Reset the ECM.
2. Start the engine.

Is DTC P1361 (P0344)* or P1362 (P0340)* indicated?

YES - Go to step 3.

NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at CMP sensor A and at the ECM.

3. Turn the ignition switch OFF.
4. Disconnect the CMP sensor A 2P connectors.




5. Measure resistance between CMP sensor 2P connector terminals No. 1 and No. 2.

Is there 1,850 - 2,450 Ohm?

YES - Go to step 6.

NO - Replace the CMP sensor A.




6. Check for continuity to body ground on all terminals individually.

Is there continuity?

YES - Replace the CMP sensor A.

NO - Go to step 7.

7. Reconnect the CMP sensor A 2P connectors.
8. Disconnect ECM connector C (31P).




9. Measure resistance between ECM connector terminals C20 and C21.

Is there 1,850 - 2,450 Ohm ?

YES - Go to step 10.

NO - Repair open or short in the faulty sensor wire(s).




10. Check for continuity between body ground and ECM connector terminal C20.

Is there continuity?

YES - Repair short to body ground in the faulty sensor wire(s).

NO - Substitute a known-good ECM and recheck. If the symptom/indication goes away, replace the original ECM.