Toyota Tundra Service Manual: Park / Neutral Position Switch Circuit

DESCRIPTION

This circuit sends the park/neutral position switch assembly signals to the clearance warning ECU assembly.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

1.	CHECK CLEARANCE WARNING ECU ASSEMBLY

(a) Disconnect the clearance warning ECU assembly connector.

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

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
J35-6 (PL) - Body ground	Ignition switch ON, shift lever in P	11 to 14 V
J35-6 (PL) - Body ground	Ignition switch ON, shift lever not in P	Below 1 V
J35-21 (RL) - Body ground	Ignition switch ON, shift lever in R	11 to 14 V
J35-21 (RL) - Body ground	Ignition switch ON, shift lever not in R	Below 1 V

Text in Illustration

*a	Front view of wire harness connector (to Clearance Warning ECU Assembly)

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

2.	CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - CLEARANCE WARNING ECU ASSEMBLY)

(a) Disconnect the D35 park/neutral position switch assembly connector.

(b) Disconnect the J35 clearance warning ECU assembly connector.

Standard Resistance:

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

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

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

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
D35-2 (RB) - Body ground	Ignition switch ON	11 to 14 V

Text in Illustration

*a	Front view of wire harness connector (to Park/Neutral Position Switch Assembly)

HINT:

*: Park/neutral position switch assembly replacement procedure:

REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY*

REPAIR OR REPLACE HARNESS OR CONNECTOR

Toyota Tundra Service Manual > How To Troubleshoot Ecu Controlled Systems: How To Proceed With Troubleshooting
HOW TO PROCEED WITH TROUBLESHOOTING 1. OPERATION FLOW HINT: Perform troubleshooting in accordance with the procedures below. The following is an outline of basic troubleshooting procedures. Confirm the troubleshooting procedures for the circuit you are working on before beginning troubleshooting. 2. ...

Toyota Tundra Owners Manual