Troubleshooting Diagnostic Procedure

Intention of troubleshooting procedure

Step 1-2
- Verifying malfunction related to DC-DC converter 1G or 1I terminal
Step 3-4
- Verifying/replacing malfunctioning part
Step 5-6
- Verify that primary malfunction is resolved and there are no other malfunctions.

STEP	INSPECTION	RESULTS	ACTION
1	PURPOSE: VERIFY IF SHORT TO GROUND IN EACH WIRING HARNESS AFFECTS DIAGNOSTIC RESULTS Switch the ignition off. Remove the service plug. (See SERVICE PLUG DISCONNECTION/CONNECTION [I-ELOOP] .) Disconnect the connector of the following parts. PCM DC-DC converter Inspect for continuity between the following terminals (wiring harness-side) and body ground: DC-DC converter terminal 1G DC-DC converter terminal 1I Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: PCM terminal 2W-DC-DC converter terminal 1G PCM terminal 2L-DC-DC converter terminal 1I If there is a common connector: Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. Repair or replace the malfunctioning part. If there is no common connector: Repair or replace the wiring harness which has a short to ground. Go to Step 5.
1		No	Go to the next step.
2	PURPOSE: VERIFY IF OPEN CIRCUIT IN EACH WIRING HARNESS AFFECTS DIAGNOSTIC RESULTS Verify that the DC-DC converter and PCM connectors are disconnected. Inspect for continuity between the following terminals (wiring harness-side): PCM terminal 2W-DC-DC converter terminal 1G PCM terminal 2L-DC-DC converter terminal 1I Is there continuity?	Yes	Replace the DC-DC converter. (See DC-DC CONVERTER REMOVAL/INSTALLATION [I-ELOOP] .) Go to Step 5.
2		No	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: PCM terminal 2W-DC-DC converter terminal 1G PCM terminal 2L-DC-DC converter terminal 1I If there is a common connector: Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. Repair or replace the malfunctioning part. If there is no common connector: Repair or replace the wiring harness which has an open circuit. Go to Step 5.
3	PURPOSE: VERIFY IF MALFUNCTION OCCURRING IS CAUSED BY WIRING HARNESS/CONNECTOR LOSS Have all the wiring harnesses/connectors which can be considered the cause of DTC P0A94:00 been inspected?	Yes	Go to the next step.
3		No	Inspect all the related wiring harnesses/connectors. If there is a malfunction Repair or replace the connector and/or terminals, then go to Step 5. If there is no malfunction Go to the next step.
4	PURPOSE: VERIFY DC-DC CONVERTER REPLACEMENT RECORD Is the DC-DC converter being replaced within the troubleshooting diagnostic procedure this time?	Yes	Replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .) Go to the next step.
4		No	Replace the DC-DC converter. (See DC-DC CONVERTER REMOVAL/INSTALLATION [I-ELOOP] .) Go to the next step.
5	PURPOSE: VERIFICATION OF VEHICLE REPAIR COMPLETION Always reconnect all disconnected connectors. Reinstall the service plug. (See SERVICE PLUG DISCONNECTION/CONNECTION [I-ELOOP] .) Clear the DTC from the PCM memory using the M-MDS. (See CLEARING DTC [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .) Implement the repeatability verification procedure. (See REPEATABILITY VERIFICATION PROCEDURE .) Perform the DTC Reading Procedure. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .) Is the same DTC present?	Yes	Repeat the inspection from Step 3.
5		No	Go to the next step.
6	PURPOSE: VERIFY IF THERE IS ANY OTHER MALFUNCTION Is any other DTC or pending code stored?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
6		No	DTC troubleshooting completed.