DTC Troubleshooting: P0340 (57)
DTC P0340:
 CMP Sensor No Signal
NOTE: Before you troubleshoot, record all freeze data and review the general troubleshooting information.
  1. Turn the ignition switch ON (II).
  1. Clear the DTC with the HDS.
  1. Start the engine. If engine does not start, keep cranking for 10 seconds.
  1. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0340 indicated?
YES -
Go to Step 5 .
NO -
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the CKP sensor and the ECM.■
  1. Turn the ignition switch OFF.
  1. Disconnect the CMP sensor 3P connector.
  1. Turn the ignition switch ON (II).
  1. Measure voltage between CMP sensor 3P connector terminal No. 1 and body ground.
Is there about 5 V?
YES -
Go to Step 13 .
NO -
Go to Step 9 .
  1. Turn the ignition switch OFF, and wait 2 minutes.
  1. Disconnect ECM connector No. 1 (96P).