DTC B10A2:52 [TELEMATICS COMMUNICATION UNIT (TYPE-B)]

id1602a7015400

Outline

System malfunction location

SAS control module collision judgement system malfunction

Detection condition

•  The telematics communication unit could not receive the SAS control module initial diagnosis completion signal from the SAS control module for 10 s or more.

Fail-safe

Not applicable

Possible cause

•  SAS control module initial diagnosis have not completed.

•  Malfunction in CAN communication line between the SAS control module and telematics communication unit

•  SAS control module malfunction

•  Telematics communication unit malfunction

System wiring diagram

Not applicable

Connector diagram

Not applicable

System malfunction location	SAS control module collision judgement system malfunction
Detection condition	• The telematics communication unit could not receive the SAS control module initial diagnosis completion signal from the SAS control module for 10 s or more.
Fail-safe	Not applicable
Possible cause	• SAS control module initial diagnosis have not completed. • Malfunction in CAN communication line between the SAS control module and telematics communication unit • SAS control module malfunction • Telematics communication unit malfunction
System wiring diagram	Not applicable
Connector diagram	Not applicable

Diagnostic Procedure

Step

Inspection

Results

Action

1

INSPECT SAS CONTROL MODULE FOR MALFUNCTION

•  Perform the DTC inspection for the SAS control module.
(Refer to the [DTC INSPECTION] in the workshop manual)

•  Are any DTCs displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

(Refer to the [DTC TABLE [SAS CONTROL MODULE]] in the workshop manual)

No

Go to the next step.

2

INSPECT CAN COMMUNICATION LINE

•  Perform an inspection in accordance with the multiplex communication system diagnostic procedure.
(Refer to the [CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW] in the workshop manual)

•  Is the CAN communication line normal?

Yes

Replace the telematics communication unit and perform the repair completion verification.

(Refer to the [TELEMATICS COMMUNICATION UNIT REMOVAL/INSTALLATION] in the workshop manual)

No

Repair or replace the malfunctioning location and perform the repair completion verification.

(Refer to the [CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW] in the workshop manual)

Repair completion verification

VERIFY IF OTHER DTC IS DISPLAYED

•  Perform the DTC inspection.
(Refer to the [DTC INSPECTION] in the workshop manual)

•  Are any other DTCs displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

No

DTC troubleshooting completed.

Step	Inspection	Results	Action
1	INSPECT SAS CONTROL MODULE FOR MALFUNCTION • Perform the DTC inspection for the SAS control module. (Refer to the [DTC INSPECTION] in the workshop manual) • Are any DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (Refer to the [DTC TABLE [SAS CONTROL MODULE]] in the workshop manual)
1		No	Go to the next step.
2	INSPECT CAN COMMUNICATION LINE • Perform an inspection in accordance with the multiplex communication system diagnostic procedure. (Refer to the [CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW] in the workshop manual) • Is the CAN communication line normal?	Yes	Replace the telematics communication unit and perform the repair completion verification. (Refer to the [TELEMATICS COMMUNICATION UNIT REMOVAL/INSTALLATION] in the workshop manual)
2		No	Repair or replace the malfunctioning location and perform the repair completion verification. (Refer to the [CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW] in the workshop manual)
Repair completion verification	VERIFY IF OTHER DTC IS DISPLAYED • Perform the DTC inspection. (Refer to the [DTC INSPECTION] in the workshop manual) • Are any other DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
Repair completion verification		No	DTC troubleshooting completed.