Diagnostic Procedure

ELECTRIC PARKING BRAKE DIAGNOSTIC PROCEDURE

Step	Inspection		Action
1	VERIFY ALL SYSTEM DTCs Switch the ignition off. Switch the ignition ON (engine off or on) and wait for 10 s or more. Perform a CMDTC self-test using the M-MDS. (See DTC INSPECTION [ELECTRIC PARKING BRAKE] .) Are any DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [ELECTRIC PARKING BRAKE] .)
1		No	Go to the next step.
2	VERIFY IF THE ELECTRIC PARKING BRAKE WARNING LIGHT IS TURNED ON Verify if the electric parking brake warning light is turned on. Is the electric parking brake warning light turned on?	Yes	Perform an inspection referring to "ELECTRIC PARKING BRAKE WARNING LIGHT TURNS ON". (See ELECTRIC PARKING BRAKE WARNING LIGHT TURNS ON [ELECTRIC PARKING BRAKE] .)
2		No	Go to the next step.
3	DETERMINE MALFUNCTIONING LOCATION BY PERFORMING PID/DATA MONITOR INSPECTION Using the M-MDS, display the following PIDs for the rear body control module (RBCM). (See PID/DATA MONITOR INSPECTION [REAR BODY CONTROL MODULE (RBCM)] .) DOOR_D (Front door (LH) open/closed condition) Using the M-MDS, display the following PIDs for the SAS control module. (See PID/DATA MONITOR INSPECTION [SAS CONTROL MODULE (STANDARD DEPLOYMENT CONTROL SYSTEM - MEXICO SPEC.)] .) (See PID/DATA MONITOR INSPECTION [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM - US/CANADA SPEC.)] .) SEET_B_D (Driver's seat belt fastened) Does the PID monitoring value switch correctly in conjunction with the opening/closing of the front door (LH) or with the driver's seat belt fastened?	Yes	Replace the electric parking brake control module. (See ELECTRIC PARKING BRAKE CONTROL MODULE REMOVAL/INSTALLATION .)
3		No	Not in conjunction with front door (LH) open/close Go to the next step. Not in conjunction with driver's seat belt fastened Go to Step 8.
4	INSPECT FRONT DOOR LATCH AND LOCK ACTUATOR (LH) CONNECTOR CONDITION Switch the ignition off. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .) Disconnect the front door latch and lock actuator (LH) connector. Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection. Is the connector normal?	Yes	Go to the next step.
4		No	Repair or replace the connector.
5	INSPECT FRONT DOOR LATCH SWITCH (LH) Inspect the front door latch switch (LH). (See FRONT DOOR LATCH SWITCH INSPECTION .) Is the front door latch switch (LH) normal?	Yes	Go to the next step.
5		No	Replace the front door latch and lock actuator (LH). (See FRONT DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION .)
6	INSPECT REAR BODY CONTROL MODULE (RBCM) CONNECTOR CONDITION Disconnect the rear body control module (RBCM) connector. Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection. Is the connector normal?	Yes	Go to the next step.
6		No	Repair or replace the connector.
7	INSPECT FRONT DOOR LATCH SWITCH (LH) CIRCUIT FOR SHORT TO GROUND Verify that the front door latch and lock actuator (LH) and rear body control module (RBCM) connectors are disconnected. Inspect for continuity between front door latch and lock actuator (LH) terminal L (wiring harness-side) and body ground. Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between front door latch and lock actuator (LH) terminal L and rear body control module (RBCM) terminal 3W. If there is a common connector: Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. Repair or replace the malfunctioning part. If there is no common connector: Repair or replace the wiring harness which has a short to ground.
7		No	Replace the rear body control module (RBCM). (See REAR BODY CONTROL MODULE (RBCM) REMOVAL/INSTALLATION .)
8	INSPECT DRIVER-SIDE BUCKLE SWITCH CONNECTOR CONDITION Switch the ignition off. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .) Disconnect the driver-side buckle switch connector. Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection. Is the connector normal?	Yes	Go to the next step.
8		No	Repair or replace the connector.
9	INSPECT DRIVER-SIDE BUCKLE SWITCH Inspect the driver-side buckle switch. (See BUCKLE SWITCH INSPECTION .) Is the driver-side buckle switch normal?	Yes	Go to the next step.
9		No	Replace the driver-side front buckle. (See FRONT BUCKLE REMOVAL/INSTALLATION .)
10	INSPECT SAS CONTROL MODULE CONNECTOR CONDITION Disconnect the SAS control module connector. Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection. Is the connector normal?	Yes	Go to the next step.
10		No	Repair or replace the connector.
11	INSPECT DRIVER-SIDE BUCKLE SWITCH CIRCUIT FOR SHORT TO GROUND Verify that the driver-side buckle switch and SAS control module connectors are disconnected. Inspect for continuity between driver-side buckle switch terminal 5B (wiring harness-side) and body ground. Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between driver-side buckle switch terminal 5B and SAS control module terminal 2U. If there is a common connector: Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. Repair or replace the malfunctioning part. If there is no common connector: Repair or replace the wiring harness which has a short to ground.
11		No	Replace the SAS control module. (See SAS CONTROL MODULE REMOVAL/INSTALLATION [STANDARD DEPLOYMENT CONTROL SYSTEM - MEXICO SPEC.] .) (See SAS CONTROL MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM - US/CANADA SPEC.] .)