Transmission Control Systems
L: TROUBLE CODE 32VEHICLE SPEED SENSOR 1
DIAGNOSIS:
Input signal circuit of TCM is open or shorted.
TROUBLE SYMPTOM:
No lock-up or excessive tight corner "braking".
FLOW CHART
WIRING DIAGRAM
1. CHECK HARNESS CONNECTOR BETWEEN TCM AND VEHICLE SPEED SENSOR 1.
1) Turn ignition switch to OFF.
2) Disconnect connectors from TCM and transmission.
3) Measure resistance of harness connector between TCM and transmission connector.
Connector & terminal / Specified resistance:
(B96) No. 12 - (B9) No. 16 / 1 ohms or less
(B96) No. 7 - (B9) No. 9 / 1 ohms, or less
4) Measure resistance of harness connector between TCM and body to make sure that circuit does not short.
Connector & terminal / Specified resistance:
(B96) No. 7 - Body / 1 Mohms or more
(B96) No. 12 - Body / 1 Mohms, or more
2. CHECK VEHICLE SPEED SENSOR 1.
1) Measure resistance between transmission connector receptacle's terminals.
Connector & terminal / Specified resistance:
(T4) No. 16 - No. 9 / 450 - 720 ohms
2) Measure resistance of harness connector between transmission connector and transmission case to make sure that circuit does not short.
Connector & terminal / Specified resistance:
(T4) No. 16 - Transmission / 1 Mohms or more
(T4) No. 9 - Transmission / 1 Mohms, or more
3. CHECK INPUT SIGNAL FOR TCM.
1) Connect connectors to TCM and transmission.
2) Lift-up or raise the vehicle and place safety stands.
CAUTION: On AWD models, raise all wheels off floor.
3) Start the engine and set vehicle in 20 km/h (12 MPH) condition.
4) Measure voltage between TOM connector terminals.
Connector & terminal / Specified voltage:
(B96) No. 12 - No. 7 / AC 1 V, or more
NOTE: The speed difference between front and rear wheels may light either the ABS warning light but this indicates no malfunctions. When AT control diagnosis is finished, per- form the ABS memory clearance procedure of self-diagnosis system.
- Using Subaru select monitor:
(1) Connect connectors to TOM and transmission.
(2) Turn ignition switch to OFF.
(3) Connect the Subaru select monitor to data link connector.
(4) Lift-up or raise the vehicle and place safety stands.
CAUTION: On AWD models, raise all wheels off floor.
(5) Turn ignition switch to ON and Subaru select monitor switch to ON.
(6) Start the engine and operate at constant speed.
(7) Read data on Subaru select monitor.
(8) Designate mode using function key.
Function mode: FO2 or FO3
SPECIFIED DATA:
FO2:
Compare speedometer with monitor indications.
FO3:
Compare speedometer with monitor indications.
- F02: Vehicle speed is indicated in "m/h".
- F03: Vehicle speed is indicated in "km/h".
NOTE: The speed difference between front and rear wheels may light either the ABS warning light, but this indicates no malfunctions. When AT control diagnosis is finished, perform the ABS memory clearance procedure of self-diagnosis system.
- Using oscilloscope:
(1) Connect connectors to TCM and transmission.
(2) Lift-up the vehicle and place safety stands.
WARNING: On AWD models, make sure that all wheels are raised off floor.
(3) Set oscilloscope to TCM connector terminals.
Connector & terminals:
Positive probe; (896) No. 12
Earth lead; (B96) No. 7
(4) Start the engine, and set vehicle in 20 km/h (12 MPH) condition.
(5) Measure signal voltage indicated on oscilloscope.
Specified voltage: AC / V, or more
NOTE: The speed difference between front and rear wheels may light either the ABS warning light, but this indicates no malfunctions. When AT control diagnosis is finished, perform the ABS memory clearance procedure of self-diagnosis system.