B15C4
CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: B15C4: Airbag Signal Malfunction/Not Input
B15C4 - Airbag Signal Malfunction/Not Input
DESCRIPTION
If the DCM (Telematics Transceiver) detects an error in communication between the DCM (Telematics Transceiver) and the center airbag sensor assembly as a result of the DCM (Telematics Transceiver) self check, this DTC will be set.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. CHECK DTC (AIRBAG SYSTEM)
(a) Turn the engine switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the engine switch on (IG) and wait for 10 seconds.
(d) Turn the Techstream on.
(e) Check the DTC of "AIRBAG SYSTEM" DTC Check / Clear.
Result:
B -- GO TO AIRBAG SYSTEM
A -- Continue to next step.
2. INSPECT DCM (TELEMATICS TRANSCEIVER) (GSW SIGNAL)
(a) Remove the DCM (Telematics Transceiver) but do not disconnect the connectors Removal.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Text in Illustration
Text in Illustration:
Reference Waveform
Reference Waveform:
Result:
C -- REPLACE DCM (TELEMATICS TRANSCEIVER)
B -- CHECK HARNESS AND CONNECTOR (FOR SHORT CIRCUIT)
A -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (FOR OPEN CIRCUIT)
(a) Remove the center airbag sensor assembly but do not disconnect the connectors Removal.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Text in Illustration
Text in Illustration:
Reference Waveform
Reference Waveform:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY Removal
4. CHECK HARNESS AND CONNECTOR (FOR SHORT CIRCUIT)
(a) Disconnect the J114 DCM (Telematics Transceiver) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
Text in Illustration:
NG -- CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - CENTER AIRBAG SENSOR ASSEMBLY)
OK -- Continue to next step.
5. REPLACE DCM (TELEMATICS TRANSCEIVER)
(a) Replace the DCM (Telematics Transceiver) Removal.
NOTICE:
* The engine switch must be off.
* Do not swap the DCM (Telematics Transceiver) with one from another vehicle.
NEXT -- PERFORM DCM ACTIVATION DCM Activation
6. CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - CENTER AIRBAG SENSOR ASSEMBLY)
(a) Disconnect the J114 DCM (Telematics Transceiver) connector.
(b) Disconnect the J47 center airbag sensor connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
Text in Illustration:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY Removal