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Home >> Subaru >> 2006 >> Legacy GT spec.B >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 18 (Automatic Transmission (Diagnostics) 5AT) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0736 Reverse Incorrect Ratio

DTC P0736 Reverse Incorrect Ratio

WARNING: This page is about a different variant/trim than selected.

DTC DETECTING CONDITION: 

Target gear ratio and actual gear ratio do not match.

TROUBLE SYMPTOM: 

DIAGNOSTIC PROCEDURE

Step Check Yes No
1 CHECK DTC OF TCM.  Is any DTC of the followings detected? P0715, P0720, P0753, P0758, P0763, P0768, P0773, P0751, P0756, P0761, P0766, P0771, P1706, P1710, P1798, P1799 Perform the diagnosis according to DTC. Go to step 2. 
2 CHECK TURBINE SPEED SENSOR USING SUBARU SELECT MONITOR. 
  1. Lift-up the vehicle and support with rigid racks.
    NOTE: Raise all wheels off floor.
  2. Start the engine, and drive it.
  3. Read the current data of torque converter turbine speed using Subaru Select Monitor. < Ref. to READ CURRENT DATA , OPERATION, Subaru Select Monitor. >
NOTE: The speed difference between front and rear wheels may light the ABS warning light, but this does not indicate a malfunction. When AT control diagnosis is finished, perform the VDC memory clearance procedure of on-board diagnostics system. < Ref. to CLEAR MEMORY MODE , OPERATION, Subaru Select Monitor. >
Does the displayed value of the Subaru Select Monitor change according to engine speed and shifting? Go to step 3.  Perform the diagnosis according to DTC P0715, P1710.
3 CHECK FRONT AND REAR VEHICLE SPEED SENSORS.  Do the values displayed for each of the Subaru Select Monitor and the speedometer substantially match? Go to step 4.  Perform the diagnosis according to DTC P0720, P1706.
4 CHECK INHIBITOR SWITCH.  Do the values displayed for the Subaru Select Monitor and the meter indicator match? Go to step 5.  Perform the diagnosis according to DTC P0705.
5 DRIVING CHECK. 
  1. Turn the ignition switch to OFF.
  2. After restarting the engine, check that the SPORT indicator light is not blinking, and perform a drive check based on the Inspection Mode. < Ref. to PROCEDURE , Inspection Mode. >
Is DTC displayed again? Check the DTC. Then, when proceeded again to step 5, Go to step 6. Go to step 6. 
6 CHECK AFTER REPAIR.  Is the trouble symptom in repairable (malfunction in shifting such as excessive shift shock, engine speed increases excessively when shifting)? Replace the transmission assembly. Temporary poor contact occurs. Check that the harness connector is not faulty.