Code No.C1614: Parking brake switch stuck ON


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

OPERATION


The 4WD-ECU receives the parking brake switch signal from the combination meter via CAN communication.

DIAGNOSIS CODE SET CONDITION


The parking brake switch is stuck on

PROBABLE CAUSES



DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics.
Use M.U.T.-III to perform the CAN bus diagnosis.

Q. Is the check result normal?
Go to Step 3
Repair the CAN bus lines (Refer to GROUP 54C - Troubleshooting ). After repairing the CAN bus line, go to Step 2.

STEP 2. Check whether the diagnosis code is stored again.

Q. Is diagnosis code No.C1614 stored?
Go to Step 3
This diagnosis is complete.

STEP 3. M.U.T.-III data list.
Check the following data list (Refer to ).

  • Item No.29: Parking brake SW (CAN input)

Q. Is the check result normal?
Go to Step 7
Go to Step 4

STEP 4. Check the parking brake switch.
Check the parking brake switch (Refer to GROUP 36 - On-vehicle Service ).

Q. Is the check result normal?
Go to Step 5
Replace the parking brake switch. (Refer to GROUP 36 - Parking Brake Lever ). Then go to Step 7.

STEP 5. Check the wiring harness between combination meter connector and parking brake switch connector.
(1)Disconnect the combination meter connector and the parking brake switch connector.
(2)Measure the resistance between the wiring harness side connector terminal of the parking brake switch connector and body earth.
OK: No continuity

Q. Is the check result normal?
Replace the combination meter (Refer to GROUP 54A - Combination Meter ). Then go to Step 6.
Repair the defective connector or the wiring harness. Then go to Step 6.

STEP 6. Check whether the diagnosis code is stored again.

Q. Is diagnosis code No.C1614 stored?
Replace the 4WD-ECU. (Refer to ). Then go to Step 7.
Intermittent malfunction. (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).

STEP 7. Check whether the diagnosis code is stored again.

Q. Is diagnosis code No.C1614 stored?
Return to Step 1.
This diagnosis is complete.