U151E Automatic Transaxle

U151E 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 (PNP) switch detects the shift lever position and sends signals to the ECM.

MONITOR DESCRIPTION

This DTC indicates 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 the engine can be started only when the shift lever is on P or N.

The park/neutral position switch sends a signal to the ECM according to the shift lever position (R, D, 4, 3, 2 or L).

The ECM determines that there is a problem with the switch or related parts if it receives more than 1 position signal simultaneously. The ECM will illuminate the MIL and store the DTC.

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

All

TYPICAL MALFUNCTION THRESHOLDS

* One of the following conditions is met: Condition (A), (B) or (C)

Condition (A)

* 2 or more of the following conditions are met: Condition (a), (b), (c), (d) or (e)

Condition (a)

One of the following conditions is met

Condition (b)

Condition (c)

Condition (d)

Condition (e)

Condition (B)

* All conditions are met

Condition (C)

* Both conditions are met: Condition (a) and (b)

Condition (a)

One of the following conditions is met

Condition (b)

One of the following conditions is met

COMPONENT OPERATING RANGE

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:
Perform the universal trip to clear permanent DTCs .

HINT
Using Techstream's Data List allows switch, sensor, actuator and other item values to be read without removing any parts. Reading the Data List early in troubleshooting is one way to save 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. Warm up the engine.

2. Turn the ignition switch off.

3. Connect Techstream to the DLC3.

4. Turn the ignition switch to ON and turn the Techstream on.

5. Enter the following menus: Powertrain / Engine and ECT / Data List.

6. Follow the instructions on the Techstream and read the Data List.

ECM:

PROCEDURE

1. CHECK WIRE HARNESS (PARK/NEUTRAL POSITION SWITCH - BATTERY)

(a) Disconnect the B26 park/neutral position switch connector.

(b) Turn the ignition switch to ON.

(c) Measure the voltage of the wire harness side connector.

Standard voltage:

NG -- CHECK POWER SOURCE OF ECM
OK -- Continue to next step.

2. INSPECT PARK/NEUTRAL POSITION SWITCH

(a) Disconnect the B26 park/neutral position switch connector.

(b) Measure the resistance of the park/neutral position switch when the shift lever is moved to each position.

Standard resistance:

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

3. CHECK WIRE HARNESS (ECM - BATTERY)

(a) Disconnect the B30 ECM connector.

(b) Turn the ignition switch to ON.

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

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

4. CHECK WIRE HARNESS (PARK/NEUTRAL POSITION SWITCH - SHIFT LOCK CONTROL UNIT ASSEMBLY)

(a) Disconnect the E40 switch connector.

(b) Turn the ignition switch to ON.

(c) Measure the voltage when the shift lever is moved to each position.

Standard voltage:

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

5. INSPECT SHIFT LOCK CONTROL UNIT ASSEMBLY

(a) Disconnect the E40 switch connector.

(b) Measure the resistance of the switch when the shift lever is moved to each position.

Standard resistance:

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

6. CHECK WIRE HARNESS (SHIFT LOCK CONTROL UNIT ASSEMBLY - BATTERY)

(a) Disconnect the A9 ECM connector.

(b) Turn the ignition switch to ON.

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

NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR

OK -- REPLACE ECM