Mode FA1 - LED No. 7, Manual Switch

MODE FA1
LED No. 7, MANUAL SWITCH

Diagnosis
- LED does not come on when Manual Switch is "ON".
- Manual Switch circuit is open or shorted.

Trouble Symptom
- Tight corner "braking".
- 2nd and 3rd gears not held.
- Failure of vehicle to start in 2nd range 2nd gear.





1. Measure signal voltage input of Transmission Control Module (TCM).
a. Turn Ignition Switch "ON" (with Engine "OFF").





b. Measure difference in voltage inputs of TCM when Manual Switch is "ON" and "OFF".

Connector & Terminal / Specified Voltage:
(853) No. 13 - (B52) No. 14 /
1 Volts (ON)
6 - 10 Volts (OFF)

2. Check harness and connectors between TCM and Manual Switch.
a. Disconnect connector from TCM.
b. Disconnect Manual Switch connector from select lever connection.





c. Measure resistance between TCM connector and Manual Switch connector, and between TCM and body.

Connector & Terminal / Specified Resistance:
(853) No. 13 - (R8) No. 4 / 0 Ohms.
(B53) No. 13 - Body / 1 M-Ohm, minimum

3. Check Manual Switch ground line.
a. Disconnect Manual Switch connector from select lever connection.





b. Measure resistance between Manual Switch connector and body.

Connector & Terminal / Specified Resistance:
(R8) No. 3 - Body / 1 Ohm, maximum

4. Check Manual Switch.
a. Disconnect Manual Switch connector from select lever connection.





b. Measure resistance between Manual Switch terminals.

Connector & Terminal / Specified Resistance:
(R8) No. 3 - No. 4 /
0 Ohms, (Switch "ON")
1 M-Ohm, minimum (Switch "OFF")