Neutral Position Switch (M/T)

DTC 51
NEUTRAL POSITION SWITCH (MT)






Diagnosis
- The Neutral Position Switch signal is abnormal.
- The harness connector between Engine Control Module (ECM) and Neutral Position Switch is short or open.

Trouble Symptom
Erroneous idling.

1. Check input signal for ECM.
a. Turn Ignition Switch to "ON".






b. Measure voltage between ECM and body.

Connector & Terminal / Specified Voltage:
(E29) No. 16 - Body /
Neutral Position.....10 - 14 Volts
Other Positions......0 Volts

2. Check Neutral Position Switch.
a. Turn Ignition Switch to "OFF".
b. Disconnect connector from Transmission harness.






c. Measure resistance between connector Terminals of Transmission harness.

Connector & Terminal / Specified Resistance:
(T2) No.1 - (T2) No.2 /
Neutral Position.....1 M-Ohm, minimum
Other Positions......10 Ohms, maximum

3. Check power supply to Neutral Position Switch.
a. Turn Ignition Switch to "ON".






b. Measure voltage between Neutral Position Switch connector and body.

Connector & Terminal / Specified Voltage:
(B14) No. 1 - Body / 10 Volts, minimum