Toyota Tundra. Manual — part 430

HARNESS AND CONNECTOR (ACCESSORY METER - BATTERY AND BODY
GROUND) RESISTANCE REFERENCE

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

4. REPLACE ACCESSORY METER ASSEMBLY

a. Temporarily replace the accessory meter with a new or normally functioning one (see ON-

VEHICLE INSPECTION ).

5. CHECK ACCESSORY METER ASSEMBLY (OPERATION)

a. Check that the accessory meter operation is normal.

OK: Operation of accessory meter returns to normal.

NG: REPLACE COMBINATION METER ASSEMBLY (see REMOVAL )

OK: END (ACCESSORY METER IS DEFECTIVE)

6. INSPECT DRIVE MONITOR SWITCH

Fig. 50: Identifying Drive Monitor Switch Connector Terminal
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a. Remove the drive monitor switch (see REMOVAL ).

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

Standard resistance

DRIVE MONITOR SWITCH RESISTANCE REFERENCE

Tester Connection

Condition Specified Condition

K20-12 (E) - Body ground Always

Below 1 ohms

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Meter - Tundra

NG: REPLACE DRIVE MONITOR SWITCH (see REMOVAL )

OK: Go to next step

7. CHECK HARNESS AND CONNECTOR (COMBINATION METER - DRIVE MONITOR

SWITCH AND BODY GROUND)

a. Disconnect the J28 combination meter connector.

Fig. 51: Identifying L2 Drive Monitor Switch Connector Terminal J28 Combination Meter
Connector Terminal
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. Disconnect the L2 drive monitor switch connector.

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

Standard resistance

Tester Connection

Switch Condition

Specified Condition

2 (MODE) - 5 (E)

INFO switch pressed

Below 1 ohms

INFO switch not pressed

10 kohms or higher

4 (SET)-5 (E)

SETUP switch pressed

Below 1 ohms

SETUP switch not pressed 10 kohms or higher

3 (RSET) - 5 (E)

SELECT switch pressed

Below 1 ohms

SELECT switch not pressed 10 kohms or higher

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Meter - Tundra

HARNESS AND CONNECTOR (COMBINATION METER - DRIVE MONITOR SWITCH
AND BODY GROUND) RESISTANCE REFERENCE

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

8. CHECK HARNESS AND CONNECTOR (COMBINATION METER - ACCESSORY METER)

a. Disconnect the J28 combination meter connector.

Fig. 52: Identifying J28 Combination Meter Connector Terminal K20 Accessory Meter
Connector Terminal
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. Disconnect the K20 accessory meter connector.

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

Tester Connection

Condition Specified Condition

J28-28 (A/B) - L2-2 (INFO)

Always

Below 1 ohms

J28-29 (E) - L2-4 (SET)

J28-30 (RSET) - L2-3 (RSET)

L2-5 (E) - Body ground

J28-28 (A/B) - Body ground

Always

10 kohms or higher

J28-29 (E) - Body ground

J28-30 (RSET) - Body ground

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Meter - Tundra

Standard resistance

HARNESS AND CONNECTOR (COMBINATION METER - ACCESSORY METER)
RESISTANCE REFERENCE

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

9. REPLACE ACCESSORY METER ASSEMBLY

a. Temporarily replace the accessory meter with a new or normally functioning one (see ON-

VEHICLE INSPECTION ).

10. CHECK ACCESSORY METER ASSEMBLY (OPERATION)

a. Check that the accessory meter operation is normal.

OK: Operation of accessory meter returns to normal.

NG: REPLACE COMBINATION METER ASSEMBLY (see REMOVAL )

OK: END (ACCESSORY METER IS DEFECTIVE)

OIL PRESSURE RECEIVER GAUGE MALFUNCTION

DESCRIPTION

The oil pressure sender detects the oil pressure generated when the engine is started. The combination meter
determines that the engine is running when the engine speed is 400 rpm or more, and determines that the engine
is cranking when the engine speed is 200 rpm or less. The oil pressure receiver gauge detects and indicates the
oil pressure applied to the oil pressure sender.

WIRING DIAGRAM

Tester Connection

Condition Specified Condition

J28-31 (TX+) - K20-10 (TX-) Always

Below 1 ohms

J28-31 (TX+) - Body ground

Always

10 kohms or higher

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Meter - Tundra