P0705

U140F AUTOMATIC TRANSMISSION / TRANSAXLE: AUTOMATIC TRANSAXLE SYSTEM: P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input)
P0705 - Transmission Range Sensor Circuit Malfunction (PRNDL Input)

DESCRIPTION

The park/neutral position switch detects the shift lever position and sends signals to the ECM.





MONITOR DESCRIPTION

These DTCs indicate a problem with the park/neutral position switch and the wire harness in the park/neutral position switch circuit.

The park/neutral position switch detects the shift lever position and sends a signal to the ECM.

For security, the park/neutral position switch detects the shift lever position so that engine can be started only when the shift lever is in the P or N position

The park/neutral position switch sends a signal to the ECM according to the shift position (R, D, 2 or L). The ECM determines that there is a problem with the switch or related parts if in receives more than 1 position signal simultaneously. The ECM will turn on the MIL and store the DTC.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS

All:





TYPICAL MALFUNCTION THRESHOLDS

1. One of the following conditions is met: Condition (A), (B), (C) and (D)

Condition (A):

If 2 or more of the following signal outputs exist at the same time





Condition (B):

If 2 or more of the following signal outputs exist at the same time





Condition (C):

All of following conditions are met





Condition (D):

Both (i) and (ii) are met

(i) One of the following is met





(ii) One of the following is met





COMPONENT OPERATING RANGE





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
Perform the universal trip to clear permanent DTCs Reading and Clearing Diagnostic Trouble Codes.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (BATTERY - PARK/NEUTRAL POSITION)

(a) Disconnect the park/neutral position switch connector.





(b) Turn the ignition switch to ON.

(c) Measure the voltage according to the value(s) in the table below.

Standard voltage:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (OUTPUT SIGNAL)

(a) Turn the ignition switch to ON.





(b) Measure the voltage according to the value(s) in the table below.

Standard voltage:





NG -- CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ECM)
OK -- Continue to next step.

3. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY

(a) Measure the resistance according to the value(s) in the table below when the shift lever is moved to each position.





Standard resistance:





NG -- REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Removal
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ECM)

(a) Connect the park/neutral position switch connector.





(b) Disconnect the ECM connectors.

(c) Turn the ignition switch to ON, and measure the voltage according to the value(s) in the table below when the shift lever is moved to each position.

Standard voltage:





HINT
*: The voltage will drop slightly due to lighting up of the back up light.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

5. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - TRANSMISSION CONTROL SWITCH)

(a) Disconnect the transmission control switch connector of shift lock control unit assembly.





(b) Turn the ignition switch to ON, and measure the voltage according to the value(s) in the table below when the shift lever is moved to each position.

Standard voltage:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

6. INSPECT SHIFT LOCK CONTROL UNIT (TRANSMISSION CONTROL SWITCH)

(a) Measure the resistance according to the value(s) in the table below when the shift lever is moved to each position.





Standard resistance:





NG -- REPLACE SHIFT LOCK CONTROL UNIT Disassembly
OK -- Continue to next step.

7. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - ECM)

(a) Connect the transmission control switch connector of shift lock control unit assembly.





(b) Turn the ignition switch to ON, and measure the voltage according to the value(s) in the table below when the shift lever is moved to each position.

Standard voltage:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE ECM Removal

8. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ECM)

(a) Turn the ignition switch off.





(b) Disconnect the ECM connectors.

(c) Measure the resistance according to the value(s) in the table below.

Standard resistance (Check for open):





Standard resistance (Check for short):





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE ECM Removal