Toyota Tundra Service Manual: Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

  • Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
  • The Matrix Chart is divided into 2 chapters. When troubleshooting, check Chapter 1 first. If instructions are given in Chapter 1 to proceed to 2, proceed as instructed.
  • If the instruction "Proceed to Next Suspected Area Shown in Problem Symptoms Table" is given in the flowchart for a circuit, proceed to the next suspected area in the table.
  • If the problem still occurs even though there are no malfunctions in any of the circuits, check the ECM and replace it if necessary.
  • *: When the circuit is defective, a DTC may be output.
1. Chapter 1: Electronic Circuit Matrix Chart

Symptom

Suspected Area

See page

No up-shift (1st -> 2nd)

Shift solenoid valve S1 circuit*

ECM

No up-shift (2nd -> 3rd)

Shift solenoid valve S2 circuit*

ECM

No up-shift (3rd -> 4th)

Shift solenoid valve S3 circuit*

Engine coolant temperature sensor circuit*

ECM

No up-shift (4th -> 5th)

Shift solenoid valve S4 circuit*

Shift solenoid valve SR circuit*

Shift solenoid valve SL1 circuit*

Shift solenoid valve SL2 circuit*

Engine coolant temperature sensor circuit*

ECM

No up-shift (5th -> 6th)

Park/neutral position switch circuit*

Shift solenoid valve S2 circuit*

ECM

No down-shift (6th -> 5th)

Park/neutral position switch circuit*

Shift solenoid valve S2 circuit*

ECM

No down-shift (5th -> 4th)

Shift solenoid valve S4 circuit*

Shift solenoid valve SR circuit*

Shift solenoid valve SL1 circuit*

Shift solenoid valve SL2 circuit*

ECM

No down-shift (4th -> 3rd)

Shift solenoid valve S3 circuit*

ECM

No down-shift (3rd -> 2nd)

Shift solenoid valve S2 circuit*

ECM

No down-shift (2nd -> 1st)

Shift solenoid valve S1 circuit*

ECM

No lock-up or no lock-up off

Shift solenoid valve SLU circuit*

Stop light switch circuit*

ECM

No lock-up

No. 1 ATF temperature sensor circuit*

Shift solenoid valve SLU circuit*

Engine coolant temperature sensor circuit*

Stop light switch circuit*

Speed sensor NT circuit*

ECM

No lock-up off

Shift solenoid valve SLU circuit*

ECM

Shift point too high or too low

Shift solenoid valve SLT circuit*

Speed sensor NT circuit*

Speed sensor SP2 circuit*

Throttle position sensor circuit*

No. 1 ATF temperature sensor circuit*

ECM

Up-shift to 4th from 3rd while engine is cold

Engine coolant temperature sensor circuit*

ECM

Up-shift to 5th from 4th while engine is cold

Engine coolant temperature sensor circuit*

ECM

No gear change by moving shift lever to "+" or "-" while shift lever in S

Transmission control switch circuit

ECM

Harsh engagement (N -> D)

Shift solenoid valve SLT circuit*

Speed sensor NT circuit*

ECM

Harsh engagement (lock-up)

Speed sensor NT circuit*

Speed sensor SP2 circuit*

Shift solenoid valve SLU circuit*

ECM

Harsh engagement (any driving position)

Throttle position sensor circuit*

Shift solenoid valve SL1 circuit*

Shift solenoid valve SL2 circuit*

Shift solenoid valve SLU circuit*

Shift solenoid valve SLT circuit*

Speed sensor NT circuit*

ECM

Poor acceleration

No. 2 ATF temperature sensor circuit*

Shift solenoid valve SLT circuit*

ECM

No engine brake

ECM

No kick-down

ECM

Engine stalls when starting off or stopping

Shift solenoid valve SLU circuit*

ECM

"A/T OIL TEMP" warning light remains on, lock-up in 3rd gear and/or shift point too high

No. 2 ATF temperature sensor circuit*

Engine coolant temperature sensor circuit*

ECM

Shifting malfunction

Park/neutral position switch circuit*

Transmission control switch circuit

ECM

Harsh engagement (1st -> 2nd -> 3rd -> 4th -> 5th -> 6th)

Shift solenoid valve SR circuit*

Slip or shudder (5th -> 6th and 6th -> 5th)

Shift solenoid valve SR circuit*

2. Chapter 2: On-Vehicle Repair and Off-Vehicle Repair

Symptom

Suspected Area

See page

Vehicle does not move when shift lever is in any forward position or reverse position

Transmission control cable (for Column Shift Type)

Transmission control cable (for Floor Shift Type)

Manual valve

Parking lock pawl

Rear planetary gear unit

Torque converter

Vehicle does not move with shift lever in R

Valve body assembly

B4 brake

No up-shift (1st -> 2nd)

Valve body assembly

B3 brake

F1 one-way clutch

F2 one-way clutch

No up-shift (2nd -> 3rd)

Valve body assembly

C3 clutch

No up-shift (3rd -> 4th)

Valve body assembly

C2 clutch

No up-shift (4th -> 5th)

Valve body assembly

B1 brake

No up-shift (5th -> 6th)

Valve body assembly

B2 brake

No down-shift (6th -> 5th)

Valve body assembly

No down-shift (5th -> 4th)

Valve body assembly

No down-shift (4th -> 3rd)

Valve body assembly

No down-shift (3rd -> 2nd)

Valve body assembly

No down-shift (2nd -> 1st)

Valve body assembly

No lock-up or no lock-up off

Valve body assembly

Torque converter

Harsh engagement (N -> D)

Valve body assembly

C1 accumulator

C1 clutch

F3 one-way clutch

F4 one-way clutch

Harsh engagement (lock-up)

Valve body assembly

Torque converter

Harsh engagement (N -> R)

Valve body assembly

C3 accumulator

C3 clutch

B4 brake

F1 one-way clutch

Harsh engagement (1st -> 2nd -> 3rd -> 4th -> 5th -> 6th)

Valve body assembly

Harsh engagement (1st -> 2nd)

Valve body assembly

B3 accumulator

B3 brake

F1 one-way clutch

F2 one-way clutch

Harsh engagement (2nd -> 3rd)

Valve body assembly

C3 accumulator

C3 clutch

Harsh engagement (3rd -> 4th)

Valve body assembly

C2 accumulator

C2 clutch

Harsh engagement (4th -> 5th)

Valve body assembly

B1 accumulator

B1 brake

Harsh engagement (5th -> 6th)

Valve body assembly

B2 accumulator

B2 brake

Harsh engagement (6th -> 5th)

Valve body assembly

C3 accumulator

C3 clutch

Slip or shudder (forward and reverse, after warm-up)

Transmission control cable (for Column Shift Type)

Transmission control cable (for Floor Shift Type)

Valve body assembly

Oil strainer

F1 one-way clutch

C3 clutch

Torque converter

Slip or shudder (particular position, just after engine starts)

Torque converter

Slip or shudder (shift lever in R)

B4 brake

F1 one-way clutch

C3 clutch

Slip or shudder (1st)

C1 clutch

F3 one-way clutch

F4 one-way clutch

Slip or shudder (2nd)

C1 clutch

B3 brake

F1 one-way clutch

F2 one-way clutch

F4 one-way clutch

Slip or shudder (3rd)

C1 clutch

C3 clutch

F1 one-way clutch

F4 one-way clutch

Slip or shudder (4th)

C1 clutch

C2 clutch

F4 one-way clutch

Slip or shudder (5th)

C2 clutch

C3 clutch

B1 brake

Slip or shudder (6th)

C2 clutch

B2 brake

No engine braking (1st to 4th, shift lever in S)

C4 clutch

No engine braking (1st)

Valve body assembly

B4 brake

No engine braking (2nd)

Valve body assembly

B2 brake

No engine braking (3rd)

Valve body assembly

B1 brake

No engine braking (4th)

Valve body assembly

No kick-down

Valve body assembly

Shift point too high or too low

Valve body assembly

Poor acceleration (all positions)

Valve body assembly

Torque converter

Poor acceleration (6th)

B2 brake

C2 clutch

Front planetary gear unit

Engine stalls when starting off or stopping

Valve body assembly

Torque converter

    Precaution

    Road Test

    See More:

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