Transmission Control Systems
TROUBLE CODE 32VEHICLE SPEED SENSOR 1
Diagnosis
Input signal circuit of Transmission Control Module (TCM) is open or shorted.
Trouble Symptom
No locking-up or excessive tight corner "braking".
1. Check harness connector between TCM and Vehicle Speed Sensor 1.
a. Turn Ignition Switch to "OFF".
b. Disconnect connectors from TCM and Transmission.
c. Measure resistance of harness connector between TCM and Transmission connector.
Connector & Terminal / Specified Resistance:
(B54) No. 12 - (B11) No. 16 / 1 Ohm, or less.
(B54) No. 7 - (B11) No. 9 / 1 Ohm, or less.
d. Measure resistance of harness connector between TCM and body to make sure that circuit does not short.
Connector & Terminal / Specified Resistance:
(B54) No. 7 - Body / 1 M-Ohms, or more.
(B54) No. 12 - Body / 1 M-Ohms, or more.
2. Check Vehicle Speed Sensor 1.
a. Measure resistance between Transmission connector receptacle's terminals.
Connector & Terminal / Specified Resistance:
(T4) No. 16 - No. 9 / 450 - 720 Ohms.
b. 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 M-Ohms or more.
(T4) No. 9 - Transmission / 1 M-Ohms or more.
3. Check input signal for TCM.
a. Connect connector to TCM and Transmission.
b. Lift-up or raise the vehicle and place safety stands.
CAUTION: On AWD models, raise all wheels off floor.
c. Push the TCS "OFF" Switch to "ON". (With TCS models)
d. Start the Engine and set vehicle in 20 km/h (12 MPH) condition.
e. Measure voltage between TCM connector terminals.
Connector & Terminal / Specified Voltage:
(B54) No. 12 - No. 7 / AC 1 Volts, or more.
NOTE: The speed difference between front and rear wheels may light either the ABS or the ABS/TCS Warning Light, but this indicates no malfunctions. When A/T control diagnosis is finished, perform the ABS or the ABS/TCS memory clearance procedure of self-diagnosis system.
Using Subaru Select Monitor
1. Connect connectors to TCM 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. Push the TCS "OFF" switch to "ON". (With TCS models)
7. Start the Engine and operate at constant speed.
8. Read data on Subaru Select Monitor.
9. Designate mode using function key.
Function mode: FO2 or FO3
Specified Data:
FO2: Compare speedometer with monitor indications.
FO3: Compare speedometer with monitor indications.
NOTE: The speed difference between front and rear wheels may light either the ABS or the ABS/TCS Warning Light, but this indicates no malfunctions. When A/T control diagnosis is finished, perform the ABS or the ABS/TCS 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; (B54) No. 12.
Earth lead; (B54) No. 7.
4. Push the TCS "OFF" switch to "ON". (With TCS models)
5. Start the Engine, and set vehicle in 20 km/h (12 MPH) condition.
6. Measure signal voltage indicated on Oscilloscope.
Specified Voltage: AC 1 Volts, or more.
NOTE: The speed difference between front and rear wheels may light either the ABS or the ABS/TCS Warning Light, but this indicates no malfunctions. When A/T control diagnosis is finished, perform the ABS or the ABS/TCS memory clearance procedure of self-diagnosis system.