Toyota Corolla Cross: DCM System Internal Failure (B15A804)
Toyota Corolla Cross (2022-2024) Service Manual / Audio & Visual & Telematics / Cellular Communication / Safety Connect System / DCM System Internal Failure (B15A804)
DESCRIPTION
This DTC is stored when an internal circuit malfunction is detected by the DCM (telematics transceiver) self check.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
B15A804 |
DCM System Internal Failure |
DCM (telematics transceiver) internal malfunction |
DCM (telematics transceiver) |
CAUTION / NOTICE / HINT
NOTICE:
- Regardless of whether DTC B15A804 has been output as a present or history DTC, the DCM (telematics transceiver) should be replaced.
- 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.
Click here
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PROCEDURE
|
1. |
REPLACE DCM (TELEMATICS TRANSCEIVER) |
(a) Replace the DCM (telematics transceiver) with a new one.
Click here
NOTICE:
- The ignition switch must be off.
- Do not exchange the DCM (telematics transceiver) with one from another vehicle.
| NEXT | .gif)
|
PERFORM DCM ACTIVATION |
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GNSS Antenna Circuit Short to Ground (B15C111,B15C113)
DESCRIPTION
These DTCs are stored when a malfunction occurs in the roof
antenna assembly circuit.
DTC No.
Detection Item
DTC Detection Condition
Trouble
Airbag Signal Signal Plausibility Failure (B15C464)
DESCRIPTION
If the DCM (telematics transceiver) detects an error in communication
between the DCM (telematics transceiver) and the airbag ECU assembly as a result
of the DCM (telematics transceiv
Emergency Call Switch Circuit Short to Ground (B15C511,B15C513)
DESCRIPTION
This DTC is stored when the DCM (telematics transceiver) detects
an open or short circuit in the manual (SOS) switch.
DTC No.
Detection Item
DTC Detect
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Cold Start Fuel Injection Control Performance #1 (P128300-P128600)
DESCRIPTION To improve emissions immediately after a cold start, cold start multi pulse fuel injection control is performed which divides a single pulse of the direct fuel injector into several smaller pulses.
DTC No. Detection Item
DTC Detection Condition Trouble Area
MIL Note
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
*: Use the GTS.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
NEXT
2.
CUSTOMER PROBLEM ANALYSIS
(a) Interview the customer and confirm the p
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