ELECTRIC PARKING BRAKE SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

VEHICLE BROUGHT TO WORKSHOP

NEXT

INSPECT BATTERY VOLTAGE

If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

NEXT

CHECK DTC AND FREEZE FRAME DATA*

NEXT

PROBLEM SYMPTOM CONFIRMATION

B

Go to step 6

A

SYMPTOM SIMULATION

NEXT

CHECK CAN COMMUNICATION SYSTEM*

1. Check for DTCs (for LHD: Click here, for RHD: Click here.

   Result

   Result	Proceed to
   CAN communication system DTC is not output	A
   CAN communication system DTC is output (for LHD)	B
   CAN communication system DTC is output (for RHD)	C

   Tech Tips

   
   

   • If any CAN communication system DTCs are output, perform troubleshooting on the CAN communication system first.

   • If communication to the parking brake ECU assembly cannot be established through the GTS, inspect terminals CANH and CANL of the DLC3 and parking brake ECU assembly, and the IG circuit of the parking brake ECU assembly.

   
   

   B

   PROCEED TO CAN COMMUNICATION SYSTEM Click here

   C

   PROCEED TO CAN COMMUNICATION SYSTEM Click here

   A

CHECK FOR DTC*

1. Check for DTCs Click here.

   Tech Tips

   Refer to Diagnostic Trouble Code Chart when any DTCs are output Click here.

   Result

   Result	Proceed to
   DTC is not output	A
   DTC is output	B

   
   

   B

   Go to step 9

   A

PROBLEM SYMPTOMS TABLE

1. Refer to Problem Symptoms Table Click here.

   Result

   Result	Proceed to
   Fault is not listed in Problem Symptoms Table	A
   Fault is listed in Problem Symptoms Table	B

   
   

   B

   Go to step 9

   A

OVERALL ANALYSIS AND TROUBLESHOOTING*

1. Refer to Terminals of ECU Click here.

2. Refer to Data List / Active Test Click here.

   
   

   NEXT

REPAIR OR REPLACE

NEXT

CONFIRMATION TEST

NEXT