Toyota Tundra. Manual — part 2832

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION TABLE

Fig. 88: Identifying D63 No. 1 Transmission Wire Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: Go to step 3

OK: Go to next step.

2. CHECK HARNESS AND CONNECTOR (NO. 1 TRANSMISSION WIRE - ECM)

a. Disconnect the D74 ECM connector.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION TABLE

Result

Tester Connection

Condition

Specified

Condition

15 (S2) - Body ground

20°C (68°F)

11 to 15 ohms

Tester Connection

Condition Specified Condition

D74-6 (S2) - Body ground 20°C (68°F)

11 to 15 ohms

Result

Proceed To

NG

A

OK (for 3UR-FE)

B

OK (for 3UR-FBE)

C

2009 Toyota Tundra

2009 TRANSMISSION AB60F Automatic Transaxle - Tundra

Fig. 89: Identifying D74 ECM Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

B: OK (for 3UR-FE) (See REMOVAL )

C: OK (for 3UR-FBE) (See REMOVAL

3. INSPECT SHIFT SOLENOID VALVE S2

a. Remove shift solenoid valve S2.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION TABLE

c. Connect the battery's positive (+) lead to the terminal of the solenoid valve connector, and the

negative (-) lead to the solenoid valve body. Then check that the valve moves and makes an
operating noise.

OK: Valve moves and makes an operating noise.

Tester Connection

Condition

Specified

Condition

Shift solenoid valve S2 connector terminal - Shift solenoid valve
S2 body

20°C (68°

F)

11 to 15 ohms

2009 Toyota Tundra

2009 TRANSMISSION AB60F Automatic Transaxle - Tundra

Fig. 90: Identifying Shift Solenoid Valve S2
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPLACE SHIFT SOLENOID VALVE S2 (See DISASSEMBLY )

OK: REPAIR OR REPLACE NO. 1 TRANSMISSION WIRE (See REMOVAL )

DTC P0979, P0980: SHIFT SOLENOID "C" CONTROL CIRCUIT LOW (SHIFT SOLENOID VALVE
S3); DTC P0980 SHIFT SOLENOID "C" CONTROL CIRCUIT HIGH (SHIFT SOLENOID VALVE
S3)

DESCRIPTION

Shifting from 1st to 6th is performed in combination with ON and OFF operation of the shift solenoid valves
SL1, SL2, S1, S2, S3, S4 and SR, which are controlled by the ECM. If an open or short circuit occurs in any of
the shift solenoid valves, the ECM controls the remaining normal shift solenoid valves to allow the vehicle to be
operated safely. Also, the ECM stops sending current to the open or short circuited solenoid (see FAIL-SAFE
TABLE ).

DTC DETECTION CONDITION TABLE

DTC

Code

DTC Detection Condition

Trouble Area

P0979

ECM detects short in solenoid valve S3 circuit 2 times when
solenoid valve S3 is operated (1 trip detection logic)



Short in shift solenoid
valve S3 circuit



Shift solenoid valve S3



ECM

P0980

ECM detects open in solenoid valve S3 circuit 2 times when
solenoid valve S3 is not operated (1 trip detection logic)



Open in shift solenoid
valve S3 circuit



Shift solenoid valve S3



ECM

2009 Toyota Tundra

2009 TRANSMISSION AB60F Automatic Transaxle - Tundra

MONITOR DESCRIPTION

These DTCs indicate an open or short in the shift solenoid valve S3 circuit. When there is an open or short
circuit in any shift solenoid valve circuit, the ECM detects the problem, illuminates the MIL and stores the
DTC. When the shift solenoid valve S3 is ON, if its resistance is 8 ohms or less, the ECM determines there is a
short in the shift solenoid valve S3 circuit.

When the shift solenoid valve S3 is OFF, if its resistance is 100 kohms or more, the ECM determines there is an
open in the shift solenoid valve S3 circuit (see FAIL-SAFE TABLE ).

MONITOR STRATEGY

MONITOR STRATEGY TABLE

TYPICAL ENABLING CONDITIONS

All

TYPICAL ENABLING CONDITIONS TABLE

P0979: Range Check (Low Resistance)

TYPICAL ENABLING CONDITIONS TABLE

P0980: Range Check (High Resistance)

TYPICAL ENABLING CONDITIONS TABLE

TYPICAL MALFUNCTION THRESHOLDS

Related DTCs

P0979: Shift solenoid valve S3/Range check (Low
resistance)
P0980: Shift solenoid valve S3/Range check (High
resistance)

Required sensors/Components

Shift solenoid valve S3

Frequency of operation

Continuous

Duration

0.128 sec. or more

MIL operation

Immediately

Sequence of operation

None

The monitor will run whenever the following DTCs are not
stored

None

Battery voltage

8 V or higher

Ignition switch

ON

Starter

OFF

Shift solenoid valve S3

ON

Shift solenoid valve S3

OFF

2009 Toyota Tundra

2009 TRANSMISSION AB60F Automatic Transaxle - Tundra