Automatic Transaxle System

U660E AUTOMATIC 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 TCM.

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 TCM according to the shift position (R or D). The TCM determines that there is a problem with the switch or related parts if it receives more than 1 position signal simultaneously. The TCM will turn on the MIL and store the DTC.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS

- When either condition below is met: Condition (A) or (B)

Condition (A)

- When 2 or more of the following signals are input at the same time:





Condition (B)

- When all conditions below are met:





COMPONENT OPERATING RANGE





WIRING DIAGRAM





INSPECTION PROCEDURE

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

HINT
Using Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

NOTICE:
In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

1. READ DATA LIST

(a) Turn the engine switch off.

(b) Connect Techstream to the DLC3.

(c) Turn the engine switch on (IG).

(d) Turn on the tester.

(e) Select the item "Powertrain / ECT / Data List".

(f) According to the display on the tester, read the "Data List".





PROCEDURE

1. CHECK HARNESS AND CONNECTOR (D, R POSITION CIRCUIT)

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





(b) Turn the engine switch on (IG).

(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 (NSW CIRCUIT)

(a) Turn the engine switch on (IG).





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

Standard voltage:





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

3. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ST RELAY)

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





(b) Remove the ST relay from the engine room relay block.

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

Standard resistance:





(d) Install the ST relay.

(e) Reconnect the park/neutral position switch connector.

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

4. INSPECT ST RELAY ASSEMBLY

(a) Remove the ST relay from the engine room relay block.





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

Standard resistance:





(c) Install the ST relay.

NG -- REPLACE ST RELAY ASSEMBLY
OK -- Continue to next step.

5. CHECK HARNESS AND CONNECTOR (ST RELAY - BODY GROUND)

(a) Remove the ST relay from the engine room relay block.





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

Standard resistance:





(c) Install the ST relay.

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

6. 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 Removal
OK -- Continue to next step.

7. CHECK HARNESS AND CONNECTOR

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





(b) Disconnect the TCM connectors.

(c) Turn the engine switch on (IG), 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 -- REPLACE TCM Removal

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

(a) Disconnect the TCM connectors.





(b) Turn the engine switch off.

(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 TCM Removal