DTC P0A1B: Motor Control Module (MCM) Internal Circuit Malfunction
NOTE:
- Before you troubleshoot, record all freeze data, and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).
- If the DTC cannot be cleared, do the troubleshooting for DTC U1204.
- Turn the ignition switch to ON (II).
- Clear the DTC with the HDS (see DTC CLEAR ).
- Turn the ignition switch to LOCK (0), and wait 1 minute.
- Turn the ignition switch to ON (II).
- Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0A1B indicated?
YES -Go to step 6.
NO -Intermittent failure, the system is OK at this time.
- Update the MCM if it does not have the latest software (see MOTOR CONTROL MODULE (MCM) UPDATE ), or substitute a known-good MCM (see SUBSTITUTING THE MCM ).
- Turn the ignition switch to LOCK (0), and wait 1 minute.
- Turn the ignition switch to ON (II).
- Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0A1B indicated?
YES -If the MCM was updated, substitute a known-good MCM (see SUBSTITUTING THE MCM ), then recheck. If the MCM was substituted, go to step 1.
NO -If the MCM was updated, troubleshooting is complete. If the MCM was substituted, replace the original MCM (see IPU CASE REMOVAL/INSTALLATION ). If any other Pending or Confirmed DTCs were indicated, go to the indicated DTC'S TROUBLESHOOTING .