The HV control ECU monitors internal operations and detects a malfunction.
DTC No.
INF Code
DTC Detection Condition
Trouble Area
P0A1D
187
ECU internal error
HV control ECU
MONITOR DESCRIPTION
The HV control ECU performs diagnostic monitoring to verify proper operation of internal and external ECU systems. In one of these diagnostics, the HV control ECU monitors the important RAM circuits of the HV control ECU. If the HV control ECU detects an error in the important RAM circuits, it will conclude that there is an internal malfunction in the HV control ECU. The HV control ECU will illuminate the MIL and set a DTC.
