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Diagnostic Procedure

DTC B14F1:54 (VEHICLE CONTROL MODULE) DIAGNOSTIC PROCEDURE

Step Inspection Results Action
1 INSPECT VEHICLE CONTROL MODULE (VCM) AND BODY CONTROL MODULE (BCM) FOR MALFUNCTION
  • Switch the ignition OFF, and then switch it ON (engine off).
  • Perform the DTC inspection for the vehicle control module (VCM) and the body control module (BCM). (See DTC INSPECTION .)
  • Is a DTC related to an internal malfunction displayed?
 Yes Repair the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC TABLE: [VEHICLE CONTROL MODULE (US)] .)
(See DTC TABLE [BODY CONTROL MODULE (BCM) (US)] .)
No Go to the next step.
2 INSPECT FRONT SIDE RADAR SENSOR (LH) FOR MALFUNCTION
  • Perform the DTC inspection for the front side radar sensor (LH). (See DTC INSPECTION .)
  • Is a DTC displayed?
 Yes Repair the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC TABLE [FRONT SIDE RADAR SENSOR (US)] .)
No Go to the next step.
3 INSPECT FRONT SIDE RADAR SENSOR (RH) FOR MALFUNCTION
  • Perform the DTC inspection for the front side radar sensor (RH). (See DTC INSPECTION .)
  • Is a DTC displayed?
 Yes Repair the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC TABLE [FRONT SIDE RADAR SENSOR (US)] .)
No Go to the next step.
4 VERIFY FRONT SIDE RADAR SENSOR REPLACEMENT RECORD
  • Before performing the troubleshooting diagnostic procedure this time, verify if the front side radar sensor was replaced.
  • Has the front side radar sensor (LH) or front side radar sensor (RH) been replaced?
 Yes After re-implementing the required servicing when replacing the front side radar sensor in accordance with front side radar sensor removal/installation, perform the repair completion verification.
(See FRONT SIDE RADAR SENSOR REMOVAL/INSTALLATION .)
No Go to the next step.
5 VERIFY IF MALFUNCTION IS CAUSED BY BODY CONTROL MODULE (BCM) CONFIGURATION ERROR
  • Switch the ignition OFF and wait for 30 s or more.
  • Switch the ignition ON (engine off or on) and wait for 30 s or more.
  • Clear the DTC recorded in the memory. (See CLEARING DTC .)
  • Perform the DTC inspection for the vehicle control module (VCM). (See DTC INSPECTION .)
  • Is the same Pending DTC present?
 Yes Go to the next step.
No Go to repair completion verification 2.
6 VERIFY BODY CONTROL MODULE (BCM) CONFIGURATION-RELATED DTCs
  • Clear the DTC recorded in the memory. (See CLEARING DTC .)
  • Perform the DTC inspection for the body control module (BCM). (See DTC INSPECTION .)
  • Is a configuration related DTC displayed?
 Yes Repair the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC TABLE [BODY CONTROL MODULE (BCM) (US)] .)
No Go to the next step.
7 RESET CONFIGURATION DATA FOR BODY CONTROL MODULE (BCM)
  • Using the M-MDS, perform the body control module (BCM) configuration. (See CONFIGURATION .)
  • Clear the DTC recorded in the memory. (See CLEARING DTC .)
  • Perform the DTC inspection for the vehicle control module (VCM). (See DTC INSPECTION .)
  • Is the same Pending DTC present?
 Yes Replace the front side radar sensor (LH), then go to the next step.
(See FRONT SIDE RADAR SENSOR REMOVAL/INSTALLATION .)
No Go to repair completion verification 2.
8 INSPECT FRONT SIDE RADAR SENSOR (RH) FOR MALFUNCTION DEPENDING ON REPEATABILITY
  • 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 vehicle control module (VCM). (See DTC INSPECTION .)
  • Is the same Pending DTC present?
 Yes Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(US)] .)
If the CAN communication is normal, replace the front side radar sensor (RH) and perform the repair completion verification.
(See FRONT SIDE RADAR SENSOR REMOVAL/INSTALLATION .)
No Go to repair completion verification 2.
Repair completion verification 1 VERIFY THAT 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 vehicle control module (VCM). (See DTC INSPECTION .)
  • Is the same Pending DTC present?
 Yes Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(US)] .)
If the CAN communication is normal, perform the diagnosis from Step 1.
No Go to the next step.
Repair completion verification 2 VERIFY IF OTHER DTC IS DISPLAYED
  • Perform the DTC inspection. (See DTC INSPECTION .)
  • Are any other DTCs displayed?
 Yes Repair the malfunctioning location according to the applicable DTC troubleshooting.
No DTC troubleshooting completed.
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