DTC B15CC: Backup Battery Failure [08/2013 - ]: Procedure
WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK DTC
- Turn the power switch off.
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG) and wait for 10 seconds.
- Turn the Techstream on.
- Perform "Health Check" and check for current DTCs. Refer to HEALTH CHECK [08/2013 - ]
.
Result
Result Proceed to DTC B15CC is output. A DTC B15CC is not output. B
B → See step 8
A: Go to next step
- CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - BUB)
- Disconnect the H101 DCM (Telematics Transceiver) connector.
- Disconnect the H103 BUB (Back-Up Battery) connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition H101-30 (BBI+) - H103-1 (BBO+) Always Below 1 Ω H101-13 (BBI-) - H103-5 (BBO-) Always Below 1 Ω H101-20 (CTR1) - H103-3 (BTR1) Always Below 1 Ω H101-21 (CTR2) - H103-4 (BTR2) Always Below 1 Ω H101-30 (BBI+) - Body ground Always 10 kΩ or higher H101-13 (BBI-) - Body ground Always 10 kΩ or higher H101-20 (CTR1) - Body ground Always 10 kΩ or higher H101-21 (CTR2) - Body ground Always 10 kΩ or higher
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: Go to next step
- REPLACE BUB (BACK-UP BATTERY)
- Replace the BUB (Back-Up Battery) with a normal one and check if the same problem occurs again. Refer to REMOVAL [08/2013 - ]
.NOTE:
The BUB (Back-Up Battery) must not be replaced while an ACN call is in progress. Refer to ACN CALL END [08/2013 - ] .
NEXT: Go to next step
- Replace the BUB (Back-Up Battery) with a normal one and check if the same problem occurs again. Refer to REMOVAL [08/2013 - ]
.
- CLEAR DTC
- Clear the DTC. Refer to DTC CHECK / CLEAR [08/2013 - ] .
NEXT: Go to next step
- RECHECK DTC
- Recheck for DTCs and check if the same trouble occurs again. Refer to HEALTH CHECK [08/2013 - ]
.
OK
No DTC is output.
NG → See step 6
OK → END
- Recheck for DTCs and check if the same trouble occurs again. Refer to HEALTH CHECK [08/2013 - ]
.
- REPLACE DCM (TELEMATICS TRANSCEIVER)
- Replace the DCM (Telematics Transceiver). Refer to REMOVAL [08/2013 - ]
.NOTE:
- The power switch must be off.
- Do not replace the DCM (telematics transceiver) with one from another vehicle.
NEXT: Go to next step
- Replace the DCM (Telematics Transceiver). Refer to REMOVAL [08/2013 - ]
.
- PERFORM PRL UPDATE
- Perform "PRL UPDATE". Refer to PRL UPDATE [08/2013 - ] .
NEXT → See step 9
- CHECK FOR INTERMITTENT PROBLEMS. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]
- PERFORM DCM ACTIVATION. Refer to DCM ACTIVATION [08/2013 - ]