DTC B1A32:96 [CONNECTIVITY MASTER UNIT]

id1602a1020200

Outline

System malfunction location

Microphone internal malfunction

Detection condition

• The connectivity master unit (CMU) detected a microphone internal malfunction for 18 s.

Fail-safe

Not applicable

Possible cause

• Microphone internal malfunction

System wiring diagram

Not applicable

Connector diagram

Not applicable

System malfunction location	Microphone internal malfunction
Detection condition	• The connectivity master unit (CMU) detected a microphone internal malfunction for 18 s.
Fail-safe	Not applicable
Possible cause	• Microphone internal malfunction
System wiring diagram	Not applicable
Connector diagram	Not applicable

Diagnostic Procedure

Step

Inspection

Results

Action

1

VERIFY OTHER CONNECTIVITY MASTER UNIT (CMU) DTCs

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

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

•  Are any of the following DTCs displayed?

―  U0186:02

―  U0186:08

―  U2145:02

―  U2145:08

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

(See SYMPTOM TROUBLESHOOTING [(E)].)

No

Go to the next step.

2

INSPECT MICROPHONE FOR MALFUNCTION DEPENDING ON REPEATABILITY

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

•  Switch the ignition OFF, and then switch it 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

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, replace the microphone and perform the repair completion verification.

(Refer to the [MICROPHONE REMOVAL/INSTALLATION] in the workshop manual)

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	VERIFY OTHER CONNECTIVITY MASTER UNIT (CMU) DTCs • Clear the DTC recorded in the memory. (Refer to the [CLEARING DTC] in the workshop manual) • Perform the DTC inspection for the connectivity master unit (CMU). (Refer to the [DTC INSPECTION] in the workshop manual) • Are any of the following DTCs displayed? ― U0186:02 ― U0186:08 ― U2145:02 ― U2145:08	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See SYMPTOM TROUBLESHOOTING [(E)].)
1		No	Go to the next step.
2	INSPECT MICROPHONE FOR MALFUNCTION DEPENDING ON REPEATABILITY • Clear the DTC recorded in the memory. (Refer to the [CLEARING DTC] in the workshop manual) • Switch the ignition OFF, and then switch it 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	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, replace the microphone and perform the repair completion verification. (Refer to the [MICROPHONE REMOVAL/INSTALLATION] in the workshop manual)
2		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.