Diagnostic Procedure

DTC U3000:1C [VEHICLE CONTROL MODULE] DIAGNOSTIC PROCEDURE

Step	Inspection	Results	Action
1	INSPECT VEHICLE CONTROL MODULE (VCM) AND BODY CONTROL MODULE (BCM) FOR MALFUNCTION Switch the ignition OFF, and then switch it ON (engine off). Perform the DTC inspection for the vehicle control module (VCM) and the body control module (BCM). (See DTC INSPECTION .) Is a DTC related to an internal malfunction displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [VEHICLE CONTROL MODULE (US)] .) (See DTC TABLE [BODY CONTROL MODULE (BCM) (US)] .)
1		No	Go to the next step.
2	VERIFY REPEATABILITY Switch the ignition ON (engine off or on). Because a CAN communication is in sleep mode, perform the following operation. Switch the ignition OFF. Remove all of the remote transmitters from the vehicle, lock all doors, and then wait for 10 min. Switch the ignition ON (engine off or on). Clear the DTC recorded in the memory. (See CLEARING DTC .) Switch the ignition OFF, and then switch it ON (engine off or on) and wait for 30 s or more. Perform the DTC inspection for the vehicle control module (VCM). (See DTC INSPECTION .) Is the same Pending DTC present?	Yes	Go to the next step.
2		No	Go to repair completion verification 2.
3	INSPECT VEHICLE CONTROL MODULE (VCM) POWER SUPPLY FOR MALFUNCTION Perform the DTC inspection for the vehicle control module (VCM). (See DTC INSPECTION .) Are any of the following DTCs displayed? U3003:16 U3003:17	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [VEHICLE CONTROL MODULE (US)] .)
3		No	Go to the next step.
4	INSPECT BODY CONTROL MODULE (BCM) CONNECTOR FOR MALFUNCTION Inspect the following connectors and terminals. (See CONNECTOR INSPECTION .) Body control module (BCM) (terminal 3A-3X) Body control module (BCM) (terminal 4A-4X) Are the connector and terminal normal?	Yes	Go to the next step.
4		No	Repair or replace the malfunctioning location and perform the repair completion verification.
5	DETERMINE MALFUNCTIONING LOCATION Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION (US) .) Measure the voltage at the following terminals (part side). Body control module (BCM) terminal 3G Body control module (BCM) terminal 4U Is the voltage normal?	Yes	Go to the next step.
5		No	Replace the body control module (BCM) and perform the repair completion verification. (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION .)
6	INSPECT PARKING ASSIST UNIT (OPTICAL) CONNECTOR FOR MALFUNCTION Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION .) Are the connector and terminal normal?	Yes	Go to the next step.
6		No	Repair or replace the malfunctioning location and perform the repair completion verification.
7	INSPECT POWER SUPPLY OUTPUT CIRCUIT (REAR SIDE) FOR SHORT TO GROUND Inspect the applicable circuit for a short to ground. (See CIRCUIT INSPECTION .) Is the circuit normal?	Yes	Go to the next step.
7		No	Repair or replace the malfunctioning location and perform the repair completion verification.
8	INSPECT POWER SUPPLY OUTPUT CIRCUIT (REAR SIDE) FOR SHORT TO POWER SUPPLY Inspect the applicable circuit for a short to power supply. (See CIRCUIT INSPECTION .) Is the circuit normal?	Yes	Go to the next step.
8		No	Repair or replace the malfunctioning location and perform the repair completion verification.
9	INSPECT POWER SUPPLY OUTPUT CIRCUIT (REAR SIDE) FOR OPEN CIRCUIT Inspect the applicable circuit for an open circuit. (See CIRCUIT INSPECTION .) Is the circuit normal?	Yes	With forward sensing camera (FSC) or driver monitoring camera: Go to the next step. Without forward sensing camera (FSC) and driver monitoring camera: Go to Step 15.
9		No	Repair or replace the malfunctioning location and perform the repair completion verification.
10	INSPECT FORWARD SENSING CAMERA (FSC) CONNECTOR FOR MALFUNCTION NOTE: For vehicles without the forward sensing camera (FSC), go to the next step. Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION .) Are the connector and terminal normal?	Yes	Go to the next step.
10		No	Repair or replace the malfunctioning location and perform the repair completion verification.
11	INSPECT DRIVER MONITORING CAMERA UNIT CONNECTOR FOR MALFUNCTION NOTE: For vehicles without the driver monitoring camera, go to the next step. Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION .) Are the connector and terminal normal?	Yes	Go to the next step.
11		No	Repair or replace the malfunctioning location and perform the repair completion verification.
12	INSPECT POWER SUPPLY OUTPUT CIRCUIT (FRONT SIDE) FOR SHORT TO GROUND Inspect the applicable circuit for a short to ground. (See CIRCUIT INSPECTION .) Is the circuit normal?	Yes	Go to the next step.
12		No	Repair or replace the malfunctioning location and perform the repair completion verification.
13	INSPECT POWER SUPPLY OUTPUT CIRCUIT (FRONT SIDE) FOR SHORT TO POWER SUPPLY Inspect the applicable circuit for a short to power supply. (See CIRCUIT INSPECTION .) Is the circuit normal?	Yes	Go to the next step.
13		No	Repair or replace the malfunctioning location and perform the repair completion verification.
14	INSPECT POWER SUPPLY OUTPUT CIRCUIT (FRONT SIDE) FOR OPEN CIRCUIT Inspect the applicable circuit for an open circuit. (See CIRCUIT INSPECTION .) Is the circuit normal?	Yes	Go to the next step.
14		No	Repair or replace the malfunctioning location and perform the repair completion verification.
15	VERIFY IF MALFUNCTION CAUSE IS PARKING ASSIST UNIT (OPTICAL) Connect the body control module (BCM) connector. Connect the parking assist unit (optical) connector. Clear the DTC recorded in the memory. (See CLEARING DTC .) Perform the DTC inspection for the vehicle control module (VCM). (See DTC INSPECTION .) Is the same Pending DTC present?	Yes	Go to the next step. (Malfunction cause may be due to parking assist unit (optical))
15		No	Go to the next step. (parking assist unit (optical) is normal)
16	VERIFY IF MALFUNCTION CAUSE IS FORWARD SENSING CAMERA (FSC) NOTE: If the forward sensing camera (FSC) is not equipped to the vehicle, go to the next step without performing the following procedure. Connect the body control module (BCM) connector. If the parking assist unit (optical) connector is connected, disconnect it. Connect the forward sensing camera (FSC) connector. Clear the DTC recorded in the memory. (See CLEARING DTC .) Perform the DTC inspection for the vehicle control module (VCM). (See DTC INSPECTION .) Is the same Pending DTC present?	Yes	Go to the next step. (Malfunction cause may be due to forward sensing camera (FSC))
16		No	Go to the next step. (Forward sensing camera (FSC) is normal)
17	VERIFY IF MALFUNCTION CAUSE IS DRIVER MONITORING CAMERA UNIT NOTE: If the driver monitoring camera unit is not equipped to the vehicle, go to the next step without performing the following procedure. Connect the body control module (BCM) connector. If the parking assist unit (optical) connector is connected, disconnect it. If the forward sensing camera (FSC) connector is connected, disconnect it. Connect the driver monitoring camera unit connector. Clear the DTC recorded in the memory. (See CLEARING DTC .) Perform the DTC inspection for the vehicle control module (VCM). (See DTC INSPECTION .) Is the same Pending DTC present?	Yes	Go to the next step. (Malfunction cause may be due to driver monitoring camera unit)
17		No	Go to the next step. (Driver monitoring camera unit is normal)
17	IDENTIFY MALFUNCTIONING MODULE Verify the number of times DTC U3000:1C is displayed in Steps 15 to 17. Is DTC U3000:1C displayed in all steps from Steps 15 to 17?	Yes	If the forward sensing camera (FSC) and driver monitoring camera unit are not equipped to the vehicle: Replace the parking assist unit (optical) and perform the repair completion verification. (See PARKING ASSIST UNIT (OPTICAL) REMOVAL/INSTALLATION (US) .) If the forward sensing camera (FSC) or driver monitoring camera unit is equipped to the vehicle: Go to the repair completion verification.
17		No	Replace the module connected the connector when the DTC is displayed, and perform the repair completion verification. (See PARKING ASSIST UNIT (OPTICAL) REMOVAL/INSTALLATION (US) .) (See FORWARD SENSING CAMERA (FSC) REMOVAL/INSTALLATION .) (See DRIVER MONITORING CAMERA UNIT REMOVAL/INSTALLATION (US) .)
Repair completion verification 1	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 .) Perform the DTC inspection for the vehicle control module (VCM). (See DTC INSPECTION .) Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW (US) .) If the CAN communication is normal, perform the diagnosis from Step 1. If the malfunction recurs, replace the body control module (BCM), then go to the next step. (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION .)
Repair completion verification 1		No	Perform the [Action for Non-repeatable Malfunction]. (See TROUBLESHOOTING PROCEDURE (US) .) If DTC is displayed Repeat the diagnosis from Step 1. If DTC is not displayed Go to repair completion verification 2.
Repair completion verification 2	VERIFY IF OTHER DTCs ARE DISPLAYED Perform the DTC inspection. (See DTC INSPECTION .) Is a DTC displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
Repair completion verification 2		No	DTC troubleshooting completed.