P0A1D / INF187
DTC P0A1D-187 Hybrid Powertrain Control ModuleDESCRIPTION
DTC Detection Condition:
The hybrid vehicle control ECU monitors its internal operation and detects malfunctions.
MONITOR DESCRIPTION
Monitor Strategy:
Typical Enabling Conditions:
Typical Malfunction Thresholds:
Component Operating Range:
The hybrid vehicle control ECU performs diagnostic monitoring to verify proper operation of internal and external ECU systems. In one of these diagnostics, the hybrid vehicle control ECU monitors the important RAM circuits of the hybrid vehicle control ECU. If the hybrid vehicle control ECU detects an error in the important RAM circuits, it will conclude that there is an internal malfunction in the hybrid vehicle control ECU. The hybrid vehicle control ECU will illuminate the MIL and set a DTC.
Step 1:
INSPECTION PROCEDURE