Park / Neutral Position Switch Circuit

U660E AUTOMATIC TRANSAXLE: AUTOMATIC TRANSAXLE SYSTEM: Park / Neutral Position Switch Circuit
- Park / Neutral Position Switch Circuit

DESCRIPTION

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

WIRING DIAGRAM





INSPECTION PROCEDURE

1. DATA LIST

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.

(a) Warm up the engine.

(b) Turn the engine switch off.

(c) Connect Techstream to the DLC3.

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

(e) Turn on the tester.

(f) Enter the following items: "Powertrain / ECT / Data List".

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





PROCEDURE

1. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY

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





(b) 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
OK -- Continue to next step.

2. CHECK ECU TERMINAL VOLTAGE (STA TERMINAL)

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





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

Standard voltage:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (TCM - ECM)
OK -- Continue to next step.

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

(a) Disconnect the TCM connector.





(b) 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 because the back up light is turned on.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (PARK/NEUTRAL POSITION SWITCH - TCM)

OK -- REPLACE TCM