Lexus ES: Backup Battery Internal Electronic Failure (B15CC49)
DESCRIPTION
This DTC is set when the DCM (telematics transceiver) detects one of the following:
- The mobilephone battery voltage drops or the mobilephone battery malfunctions.
- The mobilephone battery temperature is (temporarily) high.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B15CC49 | Backup Battery Internal Electronic Failure | Mobilephone battery malfunction |
|
CAUTION / NOTICE / HINT
NOTICE:
Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Safety Connect System.
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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 or more.
(d) Turn the Techstream on.
(e) Clear the DTCs.
Body Electrical > Telematics > Clear DTCs(f) Check for DTCs and check that no DTCs are output.
Body Electrical > Telematics > Trouble Codes| OK | .gif) | USE SIMULATION METHOD TO CHECK |
|
| 2. | CHECK MOBILEPHONE BATTERY |
(a) Replace the mobilephone battery with a normal one and check if the same problem occurs again.
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NOTICE:
-
The mobilephone battery must not be replaced while an ACN call is in progress.
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-
After replacing the mobilephone battery, perform initialization.
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(b) Clear the DTCs.
Body Electrical > Telematics > Clear DTCs(c) Recheck for DTCs and check that no DTCs are output.
Body Electrical > Telematics > Trouble CodesOK:
No DTCs are output.
| OK | | PERFORM INITIALIZATION |
|
| 3. | REPLACE DCM (TELEMATICS TRANSCEIVER) |
(a) Replace the DCM (telematics transceiver) with a new one.
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NOTICE:
- The power switch must be off.
- Do not exchange the DCM (telematics transceiver) with one from another vehicle.
| NEXT | | PERFORM DCM ACTIVATION |
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Reassembly
REASSEMBLY PROCEDURE 1. INSTALL OIL PUMP REGULATOR RING (a) Install the oil pump regulator ring to the oil pump body. *1 Oil Pump Regulator Vane *2 Oil Pump Regulator Ring *3 Oil Pump Relief Valve Spring *4 Vane Spring (b) Install the 2 oil pump regulator
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DESCRIPTION The multi-display receives a reverse signal from the BK UP LP relay*1 or clearance warning ECU assembly*2.
*1: w/o Parking Support Alert System
*2: w/ Parking Support Alert System
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