DTC U3000:47 [CONNECTIVITY MASTER UNIT]

id1602a1009300

Outline

System malfunction location

Connectivity master unit (CMU) internal malfunction

Detection condition

•  When the connectivity master unit (CMU) is launched, a communication error with each system is detected and the connectivity master unit (CMU) does not activate for a continuous 20 s.

Fail-safe

•  If the connectivity master unit (CMU) does not restart even after trying to reestablish communication a specified number of times, reset the connectivity master unit (CMU).

Possible cause

•  Connectivity master unit (CMU) malfunction

System wiring diagram

Not applicable

Connector diagram

Not applicable

System malfunction location	Connectivity master unit (CMU) internal malfunction
Detection condition	• When the connectivity master unit (CMU) is launched, a communication error with each system is detected and the connectivity master unit (CMU) does not activate for a continuous 20 s.
Fail-safe	• If the connectivity master unit (CMU) does not restart even after trying to reestablish communication a specified number of times, reset the connectivity master unit (CMU).
Possible cause	• Connectivity master unit (CMU) malfunction
System wiring diagram	Not applicable
Connector diagram	Not applicable

Diagnostic Procedure

Step

Inspection

Results

Action

1

INSPECT CONNECTIVITY MASTER UNIT (CMU) 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 connectivity master unit (CMU) and perform the repair completion verification.

(Refer to the [CONNECTIVITY MASTER UNIT (CMU) REMOVAL/INSTALLATION] in the workshop manual)

No

Go to the next step.

Repair completion verification

VERIFY IF OTHER DTCs ARE 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 CONNECTIVITY MASTER UNIT (CMU) 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 connectivity master unit (CMU) and perform the repair completion verification. (Refer to the [CONNECTIVITY MASTER UNIT (CMU) REMOVAL/INSTALLATION] in the workshop manual)
1		No	Go to the next step.
Repair completion verification	VERIFY IF OTHER DTCs ARE 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.