P0A1B / INF788

DTC P0A1B-788 Drive Motor "A" Control Module

DESCRIPTION

DTC Detection Condition:

If the MG ECU is reset due to an auxiliary battery voltage drop or abnormality, the HV control ECU will detect this DTC.

MONITOR DESCRIPTION

Monitor Strategy:

Typical Enabling Conditions:

Typical Malfunction Thresholds:

Component Operating Range:

When detecting an abnormal reset of the CPU caused by the power supply IC in the MG ECU, the HV control ECU will illuminate the MIL and set a DTC.

Wiring Diagram:

Step 1:

Step 1(continued)-3:

Step 3(continued):

INSPECTION PROCEDURE

CAUTION:
- Before inspecting the high-voltage system, take safety precautions to prevent electrical shocks, such as wearing insulated gloves and removing the service plug grip. After removing the service plug grip, put it in your pocket to prevent other technicians from reconnecting it while you are working on the high-voltage system.
- After disconnecting the service plug grip, wait for at least 5 minutes before touching any of the high-voltage connectors or terminals.

HINT: At least 5 minutes is required to discharge the high-voltage capacitor inside the w/ converter inverter assembly.