DTC B1207:23 [TELEMATICS COMMUNICATION UNIT (TYPE-B)]

id1602a7016000

Outline

System malfunction location	Event notification signal 2 circuit malfunction
Detection condition	•  The telematics communication unit detects a short to ground in the event notification signal 2 circuit for 2 s or more.
Fail-safe	Not applicable
Possible cause	•  SAS control module connector or terminal malfunction •  Telematics communication unit connector or terminal malfunction •  Short to ground in SAS control module signal circuit •  SAS control module malfunction •  Telematics communication unit malfunction

Diagnostic Procedure

Step	Inspection	Results	Action
1	INSPECT SAS CONTROL MODULE FOR MALFUNCTION •  Perform the DTC inspection for the SAS control module. (Refer to the [DTC INSPECTION] in the workshop manual) •  Are any DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (Refer to the [DTC TABLE [SAS CONTROL MODULE]] in the workshop manual)
		No	Go to the next step.
2	INSPECT SAS CONTROL MODULE CONNECTOR FOR MALFUNCTION Warning •  Handling the component parts improperly can accidentally operate (deploy) the air bag module, which may seriously injure you. Read the service warnings/cautions and the workshop manual before handling the air bag system components. (Refer to the [AIR BAG SYSTEM SERVICE WARNINGS] in the workshop manual) (Refer to the [AIR BAG SYSTEM SERVICE CAUTIONS] in the workshop manual) •  Switch the ignition off. •  Disconnect the negative battery terminal and wait for 1 min or more. (Refer to the [NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION] in the workshop manual) •  Disconnect the all SAS control module connectors. (Refer to the [SAS CONTROL MODULE REMOVAL/INSTALLATION] in the workshop manual) •  Are the connector and terminal normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
3	INSPECT TELEMATICS COMMUNICATION UNIT CONNECTOR FOR MALFUNCTION •  Inspect the applicable connector and terminal. (Refer to the [CONNECTOR INSPECTION] in the workshop manual) •  Are the connector and terminal normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
4	INSPECT SAS CONTROL MODULE SIGNAL CIRCUIT FOR SHORT TO GROUND •  Inspect the applicable circuit for a short to ground. (Refer to the [CIRCUIT INSPECTION] in the workshop manual) •  Is the circuit normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
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. (Refer to the [CLEARING DTC] in the workshop manual) •  Switch the ignition ON (engine off or on) and wait for 2 s or more. •  Perform the DTC inspection for the telematics communication unit. (Refer to the [DTC INSPECTION] in the workshop manual) •  Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (Refer to the [CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW] in the workshop manual) If the CAN communication is normal, perform the diagnosis from Step 1. •  If the malfunction recurs, replace the telematics communication unit, then go to the next step. (Refer to the [TELEMATICS COMMUNICATION UNIT REMOVAL/INSTALLATION] in the workshop manual)
		No	Go to the next step.
Repair completion verification 2	VERIFY IF OTHER DTC IS DISPLAYED •  Perform the DTC inspection. (Refer to the [DTC INSPECTION] in the workshop manual) •  Are any other DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
		No	DTC troubleshooting completed.