C1614

DTC C1614: Parking Brake Switch System (Clogging ON)













CAUTION:

- If there is any problem in the CAN bus lines, an incorrect diagnostic trouble code may be set. Prior to this diagnosis, diagnose the CAN bus lines.
- Whenever the ECU is replaced, ensure that the CAN bus lines are normal.

OPERATION

AWC-ECU receives the parking brake switch signal from the combination meter via ETACS-ECU.

DTC SET CONDITIONS

If the parking brake switch is stuck on, the code is set.

PROBABLE CAUSES

- Parking brake switch malfunction
- Damaged harness wires and connectors
- Malfunction of the ETACS-ECU
- Malfunction of the combination meter
- Malfunction of AWC-ECU
- Driving with the parking brake pulled

DIAGNOSTIC PROCEDURE

STEP 1. Scan tool CAN bus diagnostics

Using scan tool MB991958, diagnose the CAN bus lines.

Q. Is the check result normal?

YES Go to Step 3.
NO Repair the CAN bus lines. CAN Bus Diagnostics Chart.) After repairing the CAN bus line, go to Step 2.
STEP 2. Check whether the DTC is reset.

Q. Is DTC No. C1614 set?

YES Go to Step 3.
NO This diagnosis is complete.
STEP 3. Scan tool service data

Item 40: Parking brake switch (Refer to service data reference table Data List Reference Table.)

Q. Is the check result normal?

YES Go to Step 9.
NO Go to Step 4.
STEP 4. Scan tool diagnostic trouble code

- Check whether the combination meter-related DTC is set. Combination Meter .)
- Check the ETACS diagnostic trouble code. Electronic Time and Alarm Control System (ETACS) .)

Q. Is the DTC set?

YES Perform the relevant troubleshooting.
NO Go to Step 5.
STEP 5. Check the parking brake switch as single unit.

Check the parking brake switch. Testing and Inspection.)

Q. Is the check result normal?

YES Go to Step 6.
NO Replace the parking brake switch. Removal and Replacement.) Then go to Step 9.
STEP 6. Combination meter connector, intermediate connector, and parking brake switch connector check: C-04, C-23, C-122

Q. Is the check result normal?

YES Go to Step 7.
NO Repair the defective connector. Then go to Step 9.
STEP 7. Check the wiring harness between C-04 combination meter connector terminal No. 4 and C-122 parking brake switch connector terminal No. 1.

Check that the wiring harness is not shorted (short to ground).

Q. Is the check result normal?

YES Replace the combination meter. Removal and Replacement.) Then go to Step 8.
NO Repair the wiring harness. Then go to Step 8.
STEP 8. Check whether the DTC is reset.

Q. Is DTC No. C1614 set?

YES Replace the AWC-ECU.(Refer to Active Center Differential (ACD).) Then go to Step 9.
NO Intermittent malfunction. How to Cope With Intermittent Malfunctions.)
STEP 9. Check whether the DTC is reset.

Q. Is DTC No. C1614 set?

YES Return to Step 1.
NO This diagnosis is complete.