P0705
DTC PO7O5TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (RNG)
Description
- The inhibitor switch assures safety when starting the engine. This switch is mounted on the right side of the transmission case and is operated by the range selector lever.
- When the selector lever is set to "P" or "N" the electrical circuit is connected in the inhibitor switch and the starter circuit is energized for cranking the engine.
- When the selector lever is set to "R", "D", '3", "2", or "1" range the electrical circuit is disconnected in the inhibitor switch. Hence engine cranking is disabled. In the "R" range the back-up light circuit is completed in the switch and the back-up lights come on.
DTC Detecting Condition
- Two consecutive trips with fault trouble symptom.
- Starter does not rotate when selector lever is in "P" or "N" range.
- Starter rotates when selector lever is in "R", "D", "3", "2" or "1" range.
- Engine brake is not effected when selector lever is in "3" range.
- Shift characteristics are erroneous.
1. Check harness connector between Transmission Control Module (TCM) inhibitor switch.
a. Turn ignition switch to "OFF".
b. Disconnect connectors from TCM and transmission.
c. Measure resistance of harness connector between TCM and transmission.
[CHECK]: Connector & terminal
(B56) No. 9 - (B1. No. 3/1 Ohm or less.
(B56) No. 10 - (B1. No. 2/1 Ohm or less.
(B56) No. 8 - (B1. No. 1/1 Ohm or less.
(B54) No. 1 - (B1. No. 8/1 Ohm or less.
(B54) No. 2 - (B1. No. 7/1 Ohm or less.
(B54) No. 3 - (B1. No. 6/1 Ohm or less.
(B54) No. 4 - (B1. No. 5/1 Ohm or less.
[NO]: Repair open circuit of harness between TCM and transmission.
[YES]: Go to next step.
d. Measure resistance of harness connector between TCM and body.
[CHECK]: Connector & terminal
(B56) No. 9 - Body/1 M-Ohms or more.
(B56) No. 10 - Body/1 M-Ohms or more.
(B56) No. 8 - Body/1 M-Ohms or more.
(B54) No. 1 - Body/1 M-Ohms or more.
(B54) No. 2 - Body/1 M-Ohms or more.
(B54) No. 3 - Body/1 M-Ohms or more.
(B54) No. 4 - Body/1 M-Ohms or more.
[YES]: Go to step 2.
[NO]: Repair short circuit of harness between TCM and body.
2. Check inhibitor switch.
- Measure resistance between Transmission connector receptacle's terminals.
[CHECK]: Connector & terminal
(T3) No. 3 - No. 4/1 Ohm or less ("P" position).
(T3) No. 3 - No. 4/1 M-Ohm or more (Other positions).
(T3) No. 2 - No. 4/1 Ohm or less ("R" position).
(T3) No. 2 - No. 4/1 M-Ohm or more (Other positions).
(T3) No. 1 - No. 4/1 Ohm or less ("N" position).
(T3) No. 1 - No. 4/1 M-Ohm or more (Other positions).
(T3) No. 8 - No. 4/1 Ohm or less ("D" position).
(T3) No. 8 - No. 4/1 M-Ohm or more (Other positions).
(T3) No. 7 - No. 4/1 Ohm or less ("3" position).
(T3) No. 7 - No. 4/1 M-Ohm or more (Other positions).
(T3) No. 6 - No. 4/1 Ohm or less ("2" position).
(T3) No. 6 - No. 4/1 M-Ohm or more (Other positions).
(T3) No. 5 - No. 4/1 Ohm or less ("1" position).
(T3) No. 5 - No. 4/1 M-Ohm or more (Other positions).
[YES]: Go to step 3.
[NO]: Go to next [CHECK].
[CHECK]: Is there faulty connection in the selector cable?
[YES]: Repair connection at selector cable.
[NO]: Replace inhibitor switch.
3.Check input signal for TCM.
a. Turn ignition switch to "OFF".
b. Connect connector to TCM and transmission.
c. Turn ignition switch to "ON".
d. Measure voltage between TCM and body.
[CHECK]: Connector & terminal
(856) No. 9 - Body/1 Volt or less (P" position).
(B56) No. 9 - Body/8 Volts or more (Other positions).
(856) No. 10 - Body/1 Volt or less ("R" position).
(856) No. 10 - Body/6 Volts or more (Other positions).
(856) No. 8 - Body/1 Volt or less ("N" position).
(B56) No. 8 - Body/8 Volts or more (Other positions).
(854) No. 1 - Body/1 Volt or less ("D" position).
(854) No. 1 - Body/6 Volts or more (Other positions).
(854) No. 2 - Body/1 Volt or less ("3" position).
(854) No. 2 - Body/6 Volts or more (Other positions).
(854) No. 3 - Body/1 Volt or less ("2" position).
(854) No. 3 - Body/6 Volts or more (Other positions).
(854) No. 4 - Body/1 Volt or less ("1" position).
(854) No. 4 - Body/6 Volts or more (Other positions).
[YES]: Repair poor contact in TCM connector.
[NO]: Go to next [CHECK].
[CHECK]: Is there poor contact in TCM connector?
[YES]: Repair poor contact in TCM connector.
[NO]: Replace TCM with a new one.