AWD Warning Light Display: Inspection

Diagnosis: 

• CAN communication is lost with the combination meter.
• Combination meter malfunction

Trouble symptom: 

• When the ignition switch is turned to ON, the AWD light does not illuminate.
• AWD light remains lit after engine start.
• AWD light is blinking immediately after engine start.

1. CHECK DTC. 

   Read the DTC relating the TCM using the Subaru Select Monitor.

   Is DTC U0155 or U0423 displayed?

   Yes: Perform the self-diagnosis of combination meter.

   No: Go to  2.

2. CHECK DTC. 

   Read the DTC relating the TCM using the Subaru Select Monitor.

   Are DTCs other than U0155 and U0423 displayed?

   Yes: Perform the diagnosis according to DTC.

   No: Go to  3.

3. CHECK COMBINATION METER. 

   Read DTC of combination meter.

   Are any DTCs displayed?

   Yes: Perform the diagnosis according to DTC.

   No: Go to  4.

4. CHECK AWD LIGHT. 

   Turn the ignition switch to ON.

   Does AWD light illuminate and then go off in 2 seconds?

   Yes: Go to  5.

   No: Perform the self-diagnosis of combination meter. Refer to INSTRUMENTATION/DRIVER INFO>COMBINATION METER SYSTEM>OPERATION>SELF-DIAGNOSIS DISPLAY MODE .

5. CHECK AWD LIGHT. 

   Start the engine.

   Does the AWD light go off?

   Yes: Current condition is normal. Go back to Basic Diagnostic Procedure. Refer to CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE .

   No: Go to  6.

6. CHECK DTC. 

   Read the DTC relating the TCM using the Subaru Select Monitor.

   Are any DTCs displayed?

   Yes: Perform the diagnosis according to DTC.

   No: Go to  7.

7. CHECK COMBINATION METER. 

   Perform the self-diagnosis of combination meter. Refer to INSTRUMENTATION/DRIVER INFO>COMBINATION METER SYSTEM>OPERATION>SELF-DIAGNOSIS DISPLAY MODE .

   Is there any trouble with the combination meter?

   Yes: Repair the combination meter.

   No: Replace the TCM. Refer to CONTINUOUSLY VARIABLE TRANSMISSION(TR690)>TRANSMISSION CONTROL MODULE (TCM) .