P0705

U241E AUTOMATIC TRANSAXLE: AUTOMATIC TRANSAXLE SYSTEM: P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input)

DTC 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) and (C)

Condition (A):

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





Condition (B):

All of following conditions are met





Condition (C):

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

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 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 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 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
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 - SHIFT LOCK CONTROL ECU)




(a) Disconnect the connector of shift lock control ECU sub-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 ECU SUB-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 SHIFT LOCK CONTROL ECU SUB-ASSEMBLY
OK -- Continue to next step.
7. CHECK HARNESS AND CONNECTOR (SHIFT LOCK CONTROL ECU SUB-ASSEMBLY - ECM)




(a) Connect the connector of shift lock control ECU sub-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
8. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ECM)




(a) Turn the ignition switch off.
(b) Disconnect the ECM connectors.
(c) Measure 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