P0A1A-659 - Generator Control Module

HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM: P0A1A-659: Generator Control Module
P0A1A-659 - Generator Control Module

DESCRIPTION

The MG ECU located in the inverter with converter assembly monitors its internal operation and it will set DTCs when it detects malfunctions.





MONITOR DESCRIPTION

The MG ECU performs many diagnostic tests to verify proper operation of internal ECU systems. In one of these tests, the MG ECU checks the result of the generator CPU self-test. If the MG ECU detects a "Fail" from the generator CPU self-test, it will conclude that there is an internal malfunction in the generator CPU. The hybrid vehicle control ECU will illuminate the MIL and set a DTC.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS





COMPONENT OPERATING RANGE





INSPECTION PROCEDURE

CAUTION:
- Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
- After disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.
HINT
Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.

PROCEDURE

1. CHECK INVERTER WITH CONVERTER ASSEMBLY (GENERATOR CABLE CONNECTION CONDITION) P0A1B

C -- CONNECT SECURELY

B -- REPLACE MALFUNCTIONING PARTS
A -- Continue to next step.

2. CHECK INVERTER WITH CONVERTER ASSEMBLY (MOTOR CABLE CONNECTION CONDITION) P0A1B

C -- CONNECT SECURELY

B -- REPLACE MALFUNCTIONING PARTS
A -- Continue to next step.

3. CHECK HYBRID VEHICLE TRANSAXLE ASSEMBLY (MG1) P0A1B

NG -- REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY Components
OK -- Continue to next step.

4. CHECK HYBRID VEHICLE TRANSAXLE ASSEMBLY (MG2) P0A1B

NG -- REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY Components

OK -- REPLACE INVERTER WITH CONVERTER ASSEMBLY Components