Description

Tuner and amp unit (TAU) internal malfunction

Detection condition

• The connectivity master unit (CMU) detects an XM module malfunction in the tuner and amp unit (TAU) with the ignition switched ON (engine off or on).

Fail-safe

Not applicable

Possible cause

• Tuner and amp unit (TAU) malfunction

• XM module malfunction

System wiring diagram

Not applicable

Step

Inspection

Action

1

• Clear the DTC for the connectivity master unit (CMU) using the M-MDS.

  (See CLEARING DTC [CONNECTIVITY MASTER UNIT].)

• Switch the ignition ON (engine off or on) and wait for 7 s or more.

• Retrieve the connectivity master unit (CMU) DTCs using the M-MDS.

  (See DTC INSPECTION [CONNECTIVITY MASTER UNIT].)

• Is the same DTC displayed?

Yes

Replace the tuner and amp unit (TAU), then go to the next step.

(See TUNER AND AMP UNIT (TAU) REMOVAL/INSTALLATION.)

No

Go to the next step.

2

• Are any other DTCs displayed?

Yes

Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.

(See DTC TABLE [CONNECTIVITY MASTER UNIT].)

No

DTC troubleshooting completed.