B15CC
CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: B15CC: Backup Battery Failure
B15CC - Backup Battery Failure
DESCRIPTION
This DTC is set when the DCM (Telematics Transceiver) detects one of the following:
* Open or short in the BUB (Back-Up Battery) circuit.
* The BUB (Back-Up Battery) voltage drops or the BUB (Back-Up Battery) malfunctions.
* The BUB (Back-Up Battery) temperature is (temporarily) high.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. CHECK DTC
(a) Turn the power switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the power switch on (IG) and wait for 10 seconds.
(d) Turn the Techstream on.
(e) Perform "HEALTH CHECK" and check for current DTCs Health Check.
Result:
B -- CHECK FOR INTERMITTENT PROBLEMS How To Proceed With Troubleshooting
A -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - BUB (BACK-UP BATTERY))
(a) Disconnect the F38 DCM (Telematics Transceiver) connector.
(b) Disconnect the F75 BUB (Back-Up Battery) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. REPLACE BUB (BACK-UP BATTERY)
(a) Replace the BUB (Back-Up Battery) with a normal one and check if the same problem occurs again Removal.
NOTICE:
The BUB (Back-Up Battery) must not be replaced while an ACN call is in progress.
NEXT -- Continue to next step.
4. CLEAR DTC
(a) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.
NEXT -- Continue to next step.
5. RECHECK DTC
(a) Recheck for DTCs and check if the same trouble occurs again Reading and Clearing Diagnostic Trouble Codes.
OK:
No DTC is output.
NG -- REPLACE DCM (TELEMATICS TRANSCEIVER)
OK -- END
6. REPLACE DCM (TELEMATICS TRANSCEIVER)
(a) Replace the DCM (Telematics Transceiver) Removal.
NOTICE:
* The power switch must be off.
* Do not swap the DCM (Telematics Transceiver) with one from another vehicle.
NEXT -- PERFORM DCM ACTIVATION DCM Activation