P0A1D / INF721

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DESCRIPTION

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

Step 1:

INSPECTION PROCEDURE