Troubleshooting Diagnostic Procedure

P0A94: 00 (PCM (H3T)) DIAGNOSTIC PROCEDURE

Step	Inspection	Results	Action
1	PURPOSE: CHECK HARNESS (INCLUDING CONNECTOR/TERMINAL) BETWEEN BATTERY AND DC-DC CONVERTER Inspect the applicable circuit. (See CIRCUIT INSPECTION .) (See CONNECTOR INSPECTION .) Is the circuit normal?	Yes	Go to the next step.
1		No	Charge or replace the battery and perform repair completion confirmation 1.
2	PURPOSE: CHECK HARNESS (INCLUDING CONNECTOR/TERMINAL) BETWEEN DC-DC CONVERTER AND PCM Inspect the applicable circuit. (See CIRCUIT INSPECTION .) (See CONNECTOR INSPECTION .) Is the circuit normal?	Yes	Go to the next step.
2		No	Repair or replace the malfunctioning location and perform the repair completion verification 1.
3	PURPOSE: CHECK DTC TO DETERMINE IF PROBLEM IS A DC-DC CONVERTER Install/connect the part removed/disconnected during the troubleshooting procedure. Clear the DTC recorded in the memory. (See CLEARING DTC .) Replicate the vehicle conditions at the time the DTC was detected using the following procedure. Implement the repeatability verification procedure. (See System Wiring Diagram ). Perform the DTC inspection for the PCM. (See DTC INSPECTION .) Is the same DTC displayed?	Yes	Refer to the CAN (controller area network) malfunction diagnosis flow to inspect for a CAN communication error. (See MALFUNCTION DIAGNOSIS FLOW [CONTROLLER AREA NETWORK (CAN)] .) If the problem persists, replace the DC-DC converter and proceed to the next step. (Refer to [DC-DC CONVERTER REMOVAL/INSTALLATION ] in service information).
3		No	Go to repair completion verification 2.
Repair completion verification 1	PURPOSE: VERIFY THAT VEHICLE IS REPAIRED Install/connect the part removed/disconnected during the troubleshooting procedure. Clear the DTC recorded in the memory. (See CLEARING DTC .) Replicate the vehicle conditions at the time the DTC was detected using the following procedure. Implement the repeatability verification procedure. (See System Wiring Diagram ). Perform the DTC inspection for the PCM. (See DTC INSPECTION .) Is the same DTC displayed?	Yes	Refer to the CAN (controller area network) malfunction diagnosis flow to inspect for a CAN communication error. (See MALFUNCTION DIAGNOSIS FLOW [CONTROLLER AREA NETWORK (CAN)] .) If the CAN communication is normal, perform the diagnosis from Step 1. If, malfunction is not resolved, replace the PCM, then go to the next step. (Refer to [PCM REMOVAL/INSTALLATION ] in service information).
Repair completion verification 1		No	Go to the next step.
Repair completion verification 2	PURPOSE: VERIFY IF OTHER DTCs ARE DISPLAYED Perform the DTC inspection. (See DTC INSPECTION .) Are other DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (H3T)] .)
Repair completion verification 2		No	DTC troubleshooting completed.