Check Shift Indicator

Diagnosis: 

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

Trouble symptom: 

• Shift indicator does not display or remains displayed.
• Shift indicator display does not change.

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 TCM. 
   1. Operate the + side of the paddle shift switch.
   2. Read the data of «Up Switch» using the Subaru Select Monitor.

   Does it change between ON and OFF according to the operation?

   Yes:  Go to  5

   No:  Check for poor contact between TCM and paddle shift UP switch, and repair the defective part.

5. CHECK TCM. 
   1. Operate the - side of the paddle shift switch.
   2. Read the data of «Down Switch» using the Subaru Select Monitor.

   Does it change between ON and OFF according to the operation?

   Yes:  Go to  6

   No:  Check for poor contact between TCM and paddle shift down switch, and repair the defective part.

6. CHECK TCM. 
   1. Turn the ignition switch OFF, then turn it ON again.
   2. Shift the select lever to manual mode.
   3. Read the data of «Shift step in Manu. mode» using the Subaru Select Monitor.

   Is "1" displayed?

   Yes:  Go to  7

   No:  Perform the diagnosis according to DTC P0951. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0951 AUTO SHIFT MANUAL CONTROL CIRCUIT RANGE/PERFORMANCE 

7. CHECK TCM. 
   1. Shift up the select lever.
   2. Read the data of «Shift step in Manu. mode» using the Subaru Select Monitor.

   Is "2" displayed?

   Yes:  Current condition is normal.

   No:  Replace the TCM. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>TRANSMISSION CONTROL MODULE (TCM) Ref. to CONTINUOUSLY VARIABLE TRANSMISSION(TR690)>TRANSMISSION CONTROL MODULE (TCM)