DTC B1A33:96 [CONNECTIVITY MASTER UNIT (TYPE-B)]

id1602a9020400

Outline

System malfunction location

No response regarding self-test from remote tuner (RT)

Detection condition

• The connectivity master unit (CMU) detects no response for 23.6 s even though it has commanded the remote tuner (RT) to perform the self-test.

Fail-safe

Not applicable

Possible cause

• Malfunction in CAN communication line

System wiring diagram

Not applicable

Connector diagram

Not applicable

System malfunction location	No response regarding self-test from remote tuner (RT)
Detection condition	• The connectivity master unit (CMU) detects no response for 23.6 s even though it has commanded the remote tuner (RT) to perform the self-test.
Fail-safe	Not applicable
Possible cause	• Malfunction in CAN communication line
System wiring diagram	Not applicable
Connector diagram	Not applicable

Diagnostic Procedure

Step

Inspection

Results

Action

1

INSPECT CAN COMMUNICATION FOR MALFUNCTION

•  Clear the DTC recorded in the memory.
(Refer to the [CLEARING DTC] in the workshop manual)

•  Switch the ignition ON (engine off or on) and wait for 23.6 s or more.

•  Perform the DTC inspection for the connectivity master unit (CMU).
(Refer to the [DTC INSPECTION] in the workshop manual)

•  Is the same Pending DTC present?

Yes

Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.

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

If the CAN communication is normal, go to the next step.

No

Go to the next step.

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 CAN COMMUNICATION FOR MALFUNCTION • Clear the DTC recorded in the memory. (Refer to the [CLEARING DTC] in the workshop manual) • Switch the ignition ON (engine off or on) and wait for 23.6 s or more. • Perform the DTC inspection for the connectivity master unit (CMU). (Refer to the [DTC INSPECTION] in the workshop manual) • Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (Refer to the [CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW] in the workshop manual) If the CAN communication is normal, go to the next step.
1		No	Go to the next step.
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.