P0A1D / INF141
P0A1D-141Description
The hybrid vehicle control ECU monitors its internal operation and detects malfunctions.
DTC Logic
DTC Detection Logic
The hybrid vehicle control ECU performs many diagnostic tests to verify proper operation of internal ECU systems. One of these tests checks for errors in the ROM (Read Only Memory) circuits of the hybrid vehicle control ECU. If the hybrid vehicle control ECU detects this malfunction inside the ECU, it will illuminate the MIL and set a DTC.
Diagnostic Procedure
Step 1-2:
