P0705
A750F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input)
DTC 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
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 the engine can be started only when the shift lever is in P or N.
The park/neutral position switch sends a signal to the ECM according to the shift lever position (P, R, N, D or S).
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), (C) or (D)
Condition (A)
Condition (B)
Condition (C)
When the shift lever is in S, one of the following conditions is met
Condition (D)
All of the following conditions are met
COMPONENT OPERATING RANGE
WIRING DIAGRAM
INSPECTION PROCEDURE
1. DATA LIST
HINT: Using the 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.
NOTE: 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.
(a) Warm up the engine.
(b) Turn the ignition switch off.
(c) Connect the Techstream to the DLC3.
(d) Turn the ignition switch to ON.
(e) Turn the Techstream on.
(f) Enter the following menus: Powertrain / ECT / Data List.
(g) According to the display on the Techstream, read the Data List.
ECT:
PROCEDURE
1. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY
(a) Disconnect the D35 park/neutral position switch connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY
OK -- Continue to next step.
2. INSPECT TRANSMISSION CONTROL SWITCH
(a) for Column Shift Type:
(1) Disconnect the J25 transmission control switch connector.
(2) Measure the resistance according to the value(s) in the table below.
Standard resistance:
(b) for Floor Shift Type:
(1) Disconnect the J24 transmission control switch connector.
(2) Measure the resistance according to the value(s) in the table below.
Standard resistance:
C -- REPLACE TRANSMISSION FLOOR SHIFT ASSEMBLY (TRANSMISSION CONTROL SWITCH)
B -- REPLACE COLUMN SHIFT SHIFT LEVER SUB-ASSEMBLY (TRANSMISSION CONTROL SWITCH)
A -- Continue to next step.
3. CHECK PARK/NEUTRAL POSITION SWITCH ASSEMBLY (POWER SOURCE)
(a) Disconnect the D35 park/neutral position switch connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (PARK/NEUTRAL POSITION SWITCH - IGNITION SWITCH)
OK -- Continue to next step.
4. CHECK TRANSMISSION CONTROL SWITCH (POWER SOURCE)
(a) for Column Shift Type:
(1) Disconnect the J25 transmission control switch connector.
(2) Measure the voltage according to the value(s) in the table below.
Standard voltage:
(b) for Floor Shift Type:
(1) Disconnect the J24 transmission control switch connector.
(2) Measure the voltage according to the value(s) in the table below.
Standard voltage:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION CONTROL SWITCH - IGNITION SWITCH)
OK -- Continue to next step.
5. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ECM)
(a) Disconnect the D74 ECM connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:
HINT: *: The voltage will drop slightly due to the turning on of the back up light.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
6. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - ECM)
(a) Disconnect the A24 ECM connector.
(b) Turn the ignition switch ON.
(c) Measure the voltage according to the value(s) in the table below.
Standard voltage:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE ECM