DTC U3003:17 [PARKING LOCK ACTUATOR]

id0502z4595500

Outline

System malfunction location

Power supply (high input)

Detection condition

•  The parking lock actuator detects that the parking lock actuator power supply circuit voltage exceeds 18.3 V.

Fail-safe

Refer to the DTC table and fail-safe table according to the DTC. (See DTC TABLE [PARKING LOCK ACTUATOR].)

Possible cause

•  The following modules store DTCs.

―  PCM

―  DC-DC converter

•  Lead-acid battery malfunction

•  DC-DC converter malfunction

•  Parking lock actuator malfunction

System wiring diagram

Not applicable

Connector diagram

Not applicable

System malfunction location	Power supply (high input)
Detection condition	• The parking lock actuator detects that the parking lock actuator power supply circuit voltage exceeds 18.3 V.
Fail-safe	Refer to the DTC table and fail-safe table according to the DTC. (See DTC TABLE [PARKING LOCK ACTUATOR].)
Possible cause	• The following modules store DTCs. ― PCM ― DC-DC converter • Lead-acid battery malfunction • DC-DC converter malfunction • Parking lock actuator malfunction
System wiring diagram	Not applicable
Connector diagram	Not applicable

Diagnostic Procedure

Step

Inspection

Results

Action

1

INSPECT PCM FOR MALFUNCTION

•  Perform the DTC inspection for the PCM.
(See DTC INSPECTION.)

•  Is a DTC displayed?

Yes

Repair the malfunctioning part according to the applicable DTC troubleshooting.

(See DTC INSPECTION.)

No

Go to the next step.

2

INSPECT LEAD-ACID BATTERY FOR MALFUNCTION

•  Inspect the applicable part.
(See LEAD-ACID BATTERY INSPECTION.)

•  Is the part normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning part and perform the repair completion verification.

(See LEAD-ACID BATTERY RECHARGING.)

(See LEAD-ACID BATTERY REMOVAL/INSTALLATION.)

3

DC-DC CONVERTER MALFUNCTION VERIFICATION

•  Inspect the applicable part.
(See DC-DC CONVERTER INSPECTION.)

•  Is the part normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning part and perform the repair completion verification.

(See DC-DC CONVERTER REMOVAL/INSTALLATION.)

Repair completion verification 1

VERIFY IF 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 parking lock actuator.
(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 CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [L.H.D. (E)].)

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [R.H.D.].)

If the CAN communication is normal, perform the diagnosis from Step 1 again.

•  If the malfunction is not resolved, replace the parking lock actuator, then go to the next step.
(See PARKING LOCK ACTUATOR REMOVAL/INSTALLATION [A71M].)

No

Go to the next step.

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 part according to the applicable DTC troubleshooting.

No

DTC troubleshooting completed.

Step	Inspection	Results	Action
1	INSPECT PCM FOR MALFUNCTION • Perform the DTC inspection for the PCM. (See DTC INSPECTION.) • Is a DTC displayed?	Yes	Repair the malfunctioning part according to the applicable DTC troubleshooting. (See DTC INSPECTION.)
1		No	Go to the next step.
2	INSPECT LEAD-ACID BATTERY FOR MALFUNCTION • Inspect the applicable part. (See LEAD-ACID BATTERY INSPECTION.) • Is the part normal?	Yes	Go to the next step.
2		No	Repair or replace the malfunctioning part and perform the repair completion verification. (See LEAD-ACID BATTERY RECHARGING.) (See LEAD-ACID BATTERY REMOVAL/INSTALLATION.)
3	DC-DC CONVERTER MALFUNCTION VERIFICATION • Inspect the applicable part. (See DC-DC CONVERTER INSPECTION.) • Is the part normal?	Yes	Go to the next step.
3		No	Repair or replace the malfunctioning part and perform the repair completion verification. (See DC-DC CONVERTER REMOVAL/INSTALLATION.)
Repair completion verification 1	VERIFY IF 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 parking lock actuator. (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 CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [L.H.D. (E)].) (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [R.H.D.].) If the CAN communication is normal, perform the diagnosis from Step 1 again. • If the malfunction is not resolved, replace the parking lock actuator, then go to the next step. (See PARKING LOCK ACTUATOR REMOVAL/INSTALLATION [A71M].)
Repair completion verification 1		No	Go to the next step.
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 part according to the applicable DTC troubleshooting.
Repair completion verification 2		No	DTC troubleshooting completed.