Toyota 4Runner manuals

Toyota 4Runner: 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 inspection procedure.

PROCEDURE

1.

INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY

(a) Disconnect the B42 park/neutral position switch assembly connector.


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

1 (RL) - 2 (RB)

Shift lever in R

Below 1 Ω

Shift lever not in R

10 kΩ or higher

2 (RB) - 6 (PL)

Shift lever in P

Below 1 Ω

Shift lever not in P

10 kΩ or higher

Text in Illustration

*a

Component without harness connected

(Park/Neutral Position Switch Assembly)

Result

Result

Proceed to

OK

A

NG (for A750F)

B

NG (for A750E)

C


B

REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY


C

REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY

A

2.

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

(a) Disconnect the B42 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

B42-2 (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)


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.

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

(a) Disconnect the F95 clearance warning ECU assembly connector.

(b) Disconnect the B42 park/neutral position switch assembly connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

F95-7 (PL) - B42-6 (PL)

Always

Below 1 Ω

F95-23 (RL) - B42-1 (RL)

Always

Below 1 Ω

F95-7 (PL) - Body ground

Always

10 kΩ or higher

F95-23 (RL) - Body ground

Always

10 kΩ or higher


OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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