AWD Warning Light Display: Inspection: 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.
DIAGNOSTIC PROCEDURE
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK TCM. Check the DTC relating the TCM using the Subaru Select Monitor. |
Is DTC U0155 or U0423 displayed? | Perform the self-diagnosis of combination meter. | Go to step 2 . |
| 2 CHECK TCM. Check the DTC relating the TCM using the Subaru Select Monitor. |
Are DTCs other than U0155 and U0423 displayed? | Perform the diagnosis according to DTC. | Go to step 3 . |
| 3 CHECK COMBINATION METER. Check the DTC of combination meter. |
Is DTC displayed? | Perform the diagnosis according to DTC. | Go to step 4 . |
| 4 CHECK AWD LIGHT. Turn the ignition switch to ON. |
Does AWD light illuminate and then go off in 2 seconds? | Go to step 5 . | Perform the self-diagnosis of combination meter. < Ref. to SELF-DIAGNOSIS DISPLAY MODE , OPERATION, Combination Meter System. > |
| 5 CHECK AWD LIGHT. Start the engine. |
Does the AWD light go off? | Current condition is normal. Go back to Basic Diagnostic Procedure. < Ref. to BASIC DIAGNOSTIC PROCEDURE . > | Go to step 6 . |
| 6 CHECK DTC. Read the DTC relating the TCM using the Subaru Select Monitor. |
Is DTC displayed? | Perform the diagnosis according to DTC. | Go to step 7 . |
| 7 CHECK AWD LIGHT. Check the display of AWD light after engine start. |
Is AWD light illuminating? | Go to step 9 . | Go to step 8 . |
| 8 CHECK AWD LIGHT. Check the display of AWD light after engine start. |
Is AWD light blinking at 2 Hz? | Go to step 10 . | Go to step 11 . |
| 9 CHECK AWD ON/OFF SWITCHING FUNCTION. Using the Subaru Select Monitor, select the «AWD ON/OFF switching mode» in «Work Support» display, and check the current mode. < Ref. to AWD ON/OFF SWITCHING MODE . > |
Is the message «At present, the vehicle is in AWD. Switch to FF?» displayed? | Go to step 11 . | If the message «At present, the vehicle is in FF. Switch to AWD?» is displayed, select "OK", and switch to AWD mode. |
| 10 CHECK REAR DIFFERENTIAL. Using the Subaru Select Monitor, select and check «Rear differential inspection mode» in «Work Support» display. < Ref. to REAR DIFFERENTIAL INSPECTION MODE . > |
Does AWD light go off after inspection is finished normally? | Current condition is normal. Go back to Basic Diagnostic Procedure. < Ref. to BASIC DIAGNOSTIC PROCEDURE . > | Go to step 11 . |
| 11 CHECK COMBINATION METER. Perform the self-diagnosis of combination meter. < Ref. to SELF-DIAGNOSIS DISPLAY MODE , OPERATION, Combination Meter System. > |
Is there any trouble with the combination meter? | Repair the combination meter. | Replace the TCM. < Ref. to TRANSMISSION CONTROL MODULE (TCM) . > < Ref. to TRANSMISSION CONTROL MODULE (TCM) . > |