A/T
DTC P1101NEUTRAL POSITION SWITCH CIRCUIT MALFUNCTION (A/T VEHICLES)(N - SW)
Description
Refer to DTC P0705 transmission range sensor circuit malfunction.
DTC Detecting Condition
Two consecutive trips with fault.
Trouble Symptom
Erroneous idling.
1. Check input signal for Engine Control Module (ECM).
a. Turn ignition switch to "ON".
b. Measure voltage between Engine Control Module (ECM) and body.
[CHECK]: Connector & terminal:
(B84) No. 78 - Body/0 Volts ("N" and "P" positions)
(B84) No. 78 - Body/5.0 ± 0.5 Volt (Other positions)
[YES]: Go to next [CHECK].
[NO]: Go to step 2.
[CHECK]: Is there poor contact in ECM connector?
[YES]: Repair poor contact in ECM connector.
[NO]: Replace ECM with a new one.
2. Check harness connector between ECM and inhibitor switch.
a. Turn ignition switch to "OFF".
b. Disconnect connectors from ECM and transmission.
c. Measure resistance of harness connector between ECM and transmission.
[CHECK]: Connector & terminal:
(B84) No. 78 - (B12) No. 12/10 Ohms or less.
[NO]: Repair open circuit of harness between ECM connector and transmission connector.
[YES]: Go to next step.
d. Measure resistance of harness connector between ECM and body.
[CHECK]: Connector & terminal:
(B84) No. 78 - Body/1 M-Ohms or more.
[NO]: Repair short circuit of harness between ECM connector and Transmission connector.
[YES]: Go to next step.
e. Measure resistance of harness connector between inhibitor switch and body.
[CHECK]: Connector & terminal:
(B12) No.11 - Body/10 Ohms or less.
[YES]: Go to step 3.
[NO]: Repair open circuit of inhibitor switch ground line.
Measure resistance between transmission connector receptacle's terminals.
[CHECK]: Connector & terminal
(T3) No. 12 - No. 11/10 Ohms, or less ("N" and "P" positions).
(T3) No. 12 - No. 11/1 M-Ohms or more (Other positions).
[YES]: Go to next [CHECK].
[NO]: Replace inhibitor switch.
[CHECK]: Is there any fault in selector cable connection to Inhibitor Switch?
[YES]: Repair selector cable connection.
[NO]: Replace ECM with a new one.