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DTC Troubleshooting: P0883 (139-4)

DTC P0883:
 TCM Power Input Voltage Higher than ECM Power Input Signal
NOTE: If there is communication error between the ECM and TCM, DTC P0883 is not stored.
  1. Turn the ignition switch to ON (II).
  1. Clear the DTCs with the HDS.
  1. Turn the ignition switch to LOCK (0).
  1. Turn the ignition switch to ON (II).
  1. Check for DTCs with the HDS.
Is DTC P0883 indicated?
YES -
Go to Step 6 .
NO -
Intermittent failure, the system is OK at this time.■
  1. Check the IGNITION SWITCH ON SIGNAL in the DATA LIST with the HDS.
Does it indicate ON?
YES -
Remove the clutch actuator assembly, then check for the clutch actuator subharness, if the wire harness is OK, substitute a known-good TCM, then recheck. If the symptom/indication goes away with a known-good TCM, replace the original TCM.
NO -
Update the ECM if it does not have the latest software, or substitute a known-good ECM . If the ECM was updated, check for IG1 line between the ignition switch and the ECM.■