DTC B1A33:96 [CONNECTIVITY MASTER UNIT]

id1602a1020400

Outline

System malfunction location

Remote tuner (RT) internal malfunction

Detection condition

• The connectivity master unit (CMU) detected a remote tuner (RT) internal malfunction for 23.6 s.

Fail-safe

Not applicable

Possible cause

• Remote tuner (RT) malfunction

System wiring diagram

Not applicable

Connector diagram

Not applicable

System malfunction location	Remote tuner (RT) internal malfunction
Detection condition	• The connectivity master unit (CMU) detected a remote tuner (RT) internal malfunction for 23.6 s.
Fail-safe	Not applicable
Possible cause	• Remote tuner (RT) malfunction
System wiring diagram	Not applicable
Connector diagram	Not applicable

Diagnostic Procedure

Step

Inspection

Results

Action

1

INSPECT REMOTE TUNER (RT) FOR MALFUNCTION

•  Switch the ignition ON (engine off or on).

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

•  Switch the ignition OFF, and then switch the ignition ON (engine off or on) and wait for 30 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

Replace the remote tuner (RT) and perform the repair completion verification.

(Refer to the [REMOTE TUNER (RT) REMOVAL/INSTALLATION] in the workshop manual)

No

Verify that the repairs have been completed.

Repair completion verification 1

VERIFY THAT VEHICLE IS REPAIRED

•  Install/connect the part removed/disconnected during the troubleshooting procedure.

•  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, perform the diagnosis from Step 1.

•  If the malfunction recurs, replace the remote tuner (RT), then go to the next step.
(Refer to the [REMOTE TUNER (RT) REMOVAL/INSTALLATION] in the workshop manual)

No

Go to the next step.

Repair completion verification 2

VERIFY IF OTHER DTCs ARE DISPLAYED

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

•  Is a DTC displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

No

DTC troubleshooting completed.

Step	Inspection	Results	Action
1	INSPECT REMOTE TUNER (RT) FOR MALFUNCTION • Switch the ignition ON (engine off or on). • Clear the DTC recorded in the memory. (Refer to the [CLEARING DTC] in the workshop manual) • Switch the ignition OFF, and then switch the ignition ON (engine off or on) and wait for 30 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	Replace the remote tuner (RT) and perform the repair completion verification. (Refer to the [REMOTE TUNER (RT) REMOVAL/INSTALLATION] in the workshop manual)
1		No	Verify that the repairs have been completed.
Repair completion verification 1	VERIFY THAT VEHICLE IS REPAIRED • Install/connect the part removed/disconnected during the troubleshooting procedure. • 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, perform the diagnosis from Step 1. • If the malfunction recurs, replace the remote tuner (RT), then go to the next step. (Refer to the [REMOTE TUNER (RT) REMOVAL/INSTALLATION] in the workshop manual)
Repair completion verification 1		No	Go to the next step.
Repair completion verification 2	VERIFY IF OTHER DTCs ARE DISPLAYED • Perform the DTC inspection. (Refer to the [DTC INSPECTION] in the workshop manual) • Is a DTC displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
Repair completion verification 2		No	DTC troubleshooting completed.