Toyota Tundra. Manual — part 593

Fig. 17: Park / Neutral Position Switch - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

1. INSPECT PARK / NEUTRAL POSITION SWITCH

a. Disconnect the D35 switch connector.

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

Standard resistance

PARK / NEUTRAL POSITION SWITCH RESISTANCE SPECIFICATION

Fig. 18: Identifying D35 Switch Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Tester Condition

Condition

Specified Condition

6 (PL) - 2 (RB)

Shift lever on P

Below 1 ohms

1 (RL) - 2 (RB)

Shift lever on R

Below 1 ohms

6 (PL) - 2 (RB) Shift lever not on P 10 kohms or higher

1 (RL) - 2 (RB) Shift lever not on R 10 kohms or higher

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Parking Assist/Monitoring - Tundra

Result

PARK / NEUTRAL POSITION SWITCH RESULT CHART

B: REPLACE PARK / NEUTRAL POSITION SWITCH (See PARK/NEUTRAL POSITION
SWITCH )

C: REPLACE PARK / NEUTRAL POSITION SWITCH (See PARK/NEUTRAL POSITION
SWITCH )

A: Go to next step

2. CHECK HARNESS AND CONNECTOR (SWITCH - CLEARANCE WARNING ECU AND

BATTERY)

a. Disconnect the D35 switch connector.

b. Disconnect the J35 ECU connector.

Fig. 19: Identifying D35 Switch Connector And J35 ECU Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

Result

Proceed to

OK

A

NG (for A750E)

B

NG (for A750F)

C

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Parking Assist/Monitoring - Tundra

Standard voltage

HARNESS AND CONNECTOR (SWITCH - CLEARANCE WARNING ECU AND
BATTERY) VOLTAGE SPECIFICATION

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

Standard resistance

HARNESS AND CONNECTOR (SWITCH - CLEARANCE WARNING ECU AND
BATTERY) RESISTANCE SPECIFICATION

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS
TABLE

VEHICLE SPEED SIGNAL CIRCUIT

WIRING DIAGRAM

Fig. 20: Vehicle Speed Signal - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

Tester Condition

Switch Condition Specified Condition

D35-2 (RB) - Body ground Ignition switch ON

11 to 14 V

Tester Condition

Condition Specified Condition

D35-6 (PL) - J35-1 (PL)

Always

Below 1 ohms

D35-1 (RL) - J35-13 (RL)

Always

Below 1 ohms

D35-6 (PL) - Body ground

Always

10 kohms or higher

D35-1 (RL) - Body ground Always

10 kohms or higher

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Parking Assist/Monitoring - Tundra

1. CHECK COMBINATION METER ASSEMBLY (SPEED SIGNAL)

a. Disconnect the J35 ECU connector.

b. Using an oscilloscope, check the signal waveform of the meter.

OSCILLOSCOPE WAVEFORM REFERENCE

Fig. 21: Identifying J35 ECU Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

OK: Refer to the illustration.

HINT:

As the vehicle speed increases, the wave length shortens.

NG: Go to step 2

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS
TABLE

2. CHECK HARNESS AND CONNECTOR (ECU - METER)

Item

Content

Tester Connection J35-3 (SPD) - Body ground

Tool Setting

5 V/DIV., 20 msec./DIV.

Condition

Drive vehicle at 20 km/h (12 mph)

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Parking Assist/Monitoring - Tundra