For 1990-2009 cars only
Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC P0A92: Starter/Generator PerformanceCircuit/System Description
The starter/generator control module (SGCM) monitors the drive belt connection between the engine and the motor generator unit (MGU). If belt slip is detected, the DTC will set.
Conditions for Running the DTC
The engine is running.
Conditions for Setting the DTC
The mechanical drive belt connection (belt slip) is detected.
Action Taken When the DTC Sets
The hybrid system is degraded.
Conditions for Clearing the DTC
| • | The diagnostic system has not been disabled. |
| • | There are no crank sensor faults. |
| • | There are no engine coolant temperature sensor faults. |
| • | There are no mass air flow sensor faults. |
| • | There are no intake air temperature sensor faults. |
| • | There are no starter/generator temperature faults. |
| • | There are no starter/generator position sensor faults. |
| • | There are no starter/generator speed faults. |
| • | There are no starter/generator torque delivered faults. |
Diagnostic Aids
Possible belt tension or tensioner problem.
Reference Information
Schematic Reference
Connector End View Reference
Hybrid Controls Connector End Views
Description and Operation
Starter/Generator Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
- Inspect drive belt is not damaged.
- Perform the Drive Belt Tensioner Diagnosis.
- If the engine drive belt and tensioner are within specifications, replace the MGU.
| ⇒ | If damage is found, refer to Symptoms - Engine Mechanical. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
