Pinpoint Test 6: DTC P0A0E - High-Voltage System Interlock Circuit Intermittent

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PINPOINT TEST 6: DTC P0A0E - HIGH-VOLTAGE SYSTEM INTERLOCK CIRCUIT INTERMITTENT - HYBRID

Normal Operation

With the engine running, the battery power off (BPO) function may be triggered by the front and/or rear inertia fuel shut off (IFS) switches opening, a high-voltage interlock circuit opening, the electrical interlock (EL I) circuit opening (fuse protected by the battery junction box [BJB] fuse 26 [5A]) or if the contactor box within the battery control module (BCM) requests a BPO mode. If the IFS switch opens and causes the BPO mode to occur, no DTCs are set. Also, if the IFS switch is open, a power reset indicator in the instrument cluster illuminates. With the ignition switch in the ON position and the engine on or off (the engine must have run at least once after the key was cycled to ON), the BCM monitors the contactors continuously. During a power down (key OFF) sequence, one or both of the contactors may set this DTC if they fail.
NOTE:An intermittent high-voltage system interlock circuit short or open circuit can cause DTC P0A0E to be set in continuous memory.

- DTC P0A0E (High Voltage System Inter-Lock Circuit Intermittent) - sets when the BCM cannot determine if the front/rear inertia fuel shutoff (IFS) switches or the high-voltage system interlock circuit is the source of the intermittent fault.

Possible Causes
- IFS switches
- Wiring, terminals or connectors
- High-voltage system interlock circuit

Diagnostic Procedure

Step 1-Step 3:

Step 4-Step 5: