Toyota Tacoma (2015-2018) 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 each 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.
|
Symptom |
Suspected Area |
See page |
|---|---|---|
|
No up-shift (1st to 2nd) |
Shift solenoid valve SL3 circuit* |
|
|
ECM |
|
|
|
No up-shift (2nd to 3rd) |
Shift solenoid valve SL4 circuit* |
|
|
ECM |
|
|
|
No up-shift (3rd to 4th) |
Shift solenoid valve SL2 circuit* |
|
|
Engine coolant temperature sensor circuit* |
|
|
|
ECM |
|
|
|
No up-shift (4th to 5th) |
Shift solenoid valve SL1 circuit* |
|
|
Shift solenoid valve SL4 circuit* |
|
|
|
Engine coolant temperature sensor circuit* |
|
|
|
ECM |
|
|
|
No up-shift (5th to 6th) |
Shift solenoid valve SL3 circuit* |
|
|
Shift solenoid valve SL4 circuit* |
|
|
|
Engine coolant temperature sensor circuit* |
|
|
|
ECM |
|
|
|
No down-shift (6th to 5th) |
Shift solenoid valve SL4 circuit* |
|
|
ECM |
|
|
|
No down-shift (5th to 4th) |
Shift solenoid valve SL1 circuit* |
|
|
ECM |
|
|
|
No down-shift (4th to 3rd) |
Shift solenoid valve SL2 circuit* |
|
|
Shift solenoid valve SL4 circuit* |
|
|
|
ECM |
|
|
|
No down-shift (3rd to 2nd) |
Shift solenoid valve SL3 circuit* |
|
|
Shift solenoid valve SL4 circuit* |
|
|
|
ECM |
|
|
|
No down-shift (2nd to 1st) |
Shift solenoid valve SL3 circuit* |
|
|
ECM |
|
|
|
No lock-up or no lock-up off |
Shift solenoid valve SLU circuit* |
|
|
Shift solenoid valve SL circuit* |
|
|
|
Transmission revolution sensor (NT) circuit* |
|
|
|
Transmission revolution sensor (SP2) circuit* |
|
|
|
Engine coolant temperature sensor circuit* |
|
|
|
Stop light switch circuit* |
|
|
|
No. 1 ATF temperature sensor circuit* |
|
|
|
ECM |
|
|
|
Shift point too high or too low |
Throttle position sensor circuit* |
|
|
Shift solenoid valve SLT circuit* |
|
|
|
Transmission revolution sensor (NT) circuit* |
|
|
|
Transmission revolution sensor (SP2) circuit* |
|
|
|
Park/neutral position switch circuit* |
|
|
|
No. 1 ATF temperature sensor circuit* |
|
|
|
Pattern select switch power mode circuit |
|
|
|
ECM |
|
|
|
No gear change by moving shift lever to "+" or "-" while in S |
Transmission control switch circuit |
|
|
ECM |
|
|
|
Harsh engagement (N to D) |
Shift solenoid valve SLT circuit* |
|
|
ECM |
|
|
|
Harsh engagement (Any driving position) |
Throttle position sensor circuit* |
|
|
Shift solenoid valve SL1 circuit* |
|
|
|
Shift solenoid valve SL2 circuit* |
|
|
|
Shift solenoid valve SL3 circuit* |
|
|
|
Shift solenoid valve SL4 circuit* |
|
|
|
Shift solenoid valve SLT circuit* |
|
|
|
Shift solenoid valve SLU circuit* |
|
|
|
Shift solenoid valve SL circuit* |
|
|
|
ECM |
|
|
|
Harsh engagement (Lock-up) |
Shift solenoid valve SLU circuit* |
|
|
Shift solenoid valve SL circuit* |
|
|
|
Transmission revolution sensor (NT) circuit* |
|
|
|
Transmission revolution sensor (SP2) circuit* |
|
|
|
ECM |
|
|
|
Poor acceleration |
Shift solenoid valve SLT circuit* |
|
|
No. 2 ATF temperature sensor circuit* |
|
|
|
ECM |
|
|
|
Shifting malfunction (Vehicle is stuck in 3rd or 5th gear) |
ECM power source circuit |
|
|
Changing gears takes time when up-shifting |
Shift solenoid valve SL circuit* |
|
|
No engine braking |
ECM |
|
|
No kick-down |
ECM |
|
|
Slip or shudder (5th to 6th and 6th to 5th) |
Shift solenoid valve SL circuit* |
|
|
ATF temperature warning indicator remains on |
No. 2 ATF temperature sensor circuit* |
|
|
Engine coolant temperature sensor circuit* |
|
|
|
ECM |
|
|
|
Lock-up in 3rd gear |
No. 2 ATF temperature sensor circuit* |
|
|
Engine coolant temperature sensor circuit* |
|
|
|
ECM |
|
|
|
Vehicle moves forward with shift lever in N |
Park/neutral position switch circuit* |
|
|
ECM |
|
|
|
Engine stalls when starting off or stopping |
Shift solenoid valve SLU circuit* |
|
|
ECM |
|
|
|
Shifting malfunction |
Park/neutral position switch circuit* |
|
|
Transmission control switch circuit |
|
|
|
ECM |
|
.gif)
|
Symptom |
Suspected Area |
See page |
|---|---|---|
|
Vehicle does not move when shift lever is in any forward position or reverse position |
Transmission control cable |
|
|
Manual valve |
|
|
|
Parking lock pawl |
|
|
|
Rear planetary gear unit |
|
|
|
Torque converter assembly |
|
|
|
Vehicle does not move with shift lever in R |
Valve body assembly |
|
|
No. 2 brake (B2) |
|
|
|
No. 3 brake (B3) |
|
|
|
Shift solenoid valve SL4* |
|
|
|
No up-shift (1st to 2nd) |
Valve body assembly |
|
|
No. 1 brake (B1) |
|
|
|
Shift solenoid valve SL3* |
|
|
|
No up-shift (2nd to 3rd) |
Valve body assembly |
|
|
No. 3 brake (B3) |
|
|
|
Shift solenoid valve SL4* |
|
|
|
No up-shift (3rd to 4th) |
Valve body assembly |
|
|
No. 2 clutch (C2) |
|
|
|
Shift solenoid valve SL2* |
|
|
|
No up-shift (4th to 5th) |
Valve body assembly |
|
|
No. 3 brake (B3) |
|
|
|
Shift solenoid valve SL4* |
|
|
|
Shift solenoid valve SL1* |
|
|
|
No up-shift (5th to 6th) |
Valve body assembly |
|
|
No. 1 brake (B1) |
|
|
|
Shift solenoid valve SL3* |
|
|
|
Shift solenoid valve SL4* |
|
|
|
No down-shift (6th to 5th) |
No. 3 brake (B3) |
|
|
Shift solenoid valve SL4* |
|
|
|
Valve body assembly |
|
|
|
No down-shift (5th to 4th) |
Shift solenoid valve SL1* |
|
|
No. 1 clutch (C1) |
|
|
|
Valve body assembly |
|
|
|
No down-shift (4th to 3rd) |
No. 3 brake (B3) |
|
|
Shift solenoid valve SL4* |
|
|
|
Shift solenoid valve SL2* |
|
|
|
Valve body assembly |
|
|
|
No down-shift (3rd to 2nd) |
No. 1 brake (B1) |
|
|
Shift solenoid valve SL3* |
|
|
|
Shift solenoid valve SL4* |
|
|
|
Valve body assembly |
|
|
|
No down-shift (2nd to 1st) |
Valve body assembly |
|
|
Shift solenoid valve SL3* |
|
|
|
No lock-up or No lock-up off |
Valve body assembly |
|
|
Torque converter assembly |
|
|
|
Harsh engagement (N to D) |
Valve body assembly |
|
|
No. 3 one-way clutch (F3) |
|
|
|
No. 1 clutch (C1) |
|
|
|
Shift solenoid valve SL1* |
|
|
|
Harsh engagement (Lock-up) |
Valve body assembly |
|
|
Torque converter assembly |
|
|
|
Shift solenoid valve SLU* |
|
|
|
Harsh engagement (N to R) |
Valve body assembly |
|
|
No. 2 brake (B2) |
|
|
|
No. 3 brake (B3) |
|
|
|
Shift solenoid valve SL4* |
|
|
|
Harsh engagement (1st to 2nd to 3rd to 4th to 5th to 6th) |
Valve body assembly |
|
|
Shift solenoid valve SLT* |
|
|
|
Harsh engagement (1st to 2nd) |
Valve body assembly |
|
|
No. 1 brake (B1) |
|
|
|
Shift solenoid valve SL3* |
|
|
|
Harsh engagement (2nd to 3rd) |
Valve body assembly |
|
|
No. 3 brake (B3) |
|
|
|
Shift solenoid valve SL4* |
|
|
|
Harsh engagement (3rd to 4th) |
Valve body assembly |
|
|
No. 2 clutch (C2) |
|
|
|
Shift solenoid valve SL2* |
|
|
|
Harsh engagement (4th to 5th) |
Valve body assembly |
|
|
No. 3 brake (B3) |
|
|
|
Shift solenoid valve SL4* |
|
|
|
Harsh engagement (5th to 6th) |
Valve body assembly |
|
|
No. 1 brake (B1) |
|
|
|
Shift solenoid valve SL3* |
|
|
|
Harsh engagement (6th to 5th) |
Valve body assembly |
|
|
No. 3 brake (B3) |
|
|
|
Shift solenoid valve SL4* |
|
|
|
Slip or shudder (forward and reverse, after warm-up) |
Transmission control cable |
|
|
Valve body assembly |
|
|
|
Oil strainer |
|
|
|
No. 1 brake (B1) |
|
|
|
No. 2 brake (B2) |
|
|
|
No. 3 brake (B3) |
|
|
|
No. 3 one-way clutch (F3) |
|
|
|
No. 1 clutch (C1) |
|
|
|
No. 2 clutch (C2) |
|
|
|
Torque converter assembly |
|
|
|
Slip or shudder (particular position, just after engine starts) |
Torque converter assembly |
|
|
Slip or shudder (shift lever in R) |
No. 2 brake (B2) |
|
|
No. 3 brake (B3) |
|
|
|
Slip or shudder (1st) |
No. 3 one-way clutch (F3) |
|
|
No. 1 clutch (C1) |
|
|
|
Slip or shudder (2nd) |
No. 1 brake (B1) |
|
|
No. 1 clutch (C1) |
|
|
|
Slip or shudder (3rd) |
No. 3 brake (B3) |
|
|
No. 1 clutch (C1) |
|
|
|
Slip or shudder (4th) |
No. 1 clutch (C1) |
|
|
No. 2 clutch (C2) |
|
|
|
Slip or shudder (5th) |
No. 3 brake (B3) |
|
|
No. 2 clutch (C2) |
|
|
|
Slip or shudder (6th) |
No. 1 brake (B1) |
|
|
No. 2 clutch (C2) |
|
|
|
No engine braking (1st to 4th, shift lever in S) |
No. 1 clutch (C1) |
|
|
No engine braking (1st) |
Valve body assembly |
|
|
No. 2 brake (B2) |
|
|
|
No. 1 clutch (C1) |
|
|
|
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 assembly |
|
|
|
Poor acceleration (6th) |
No. 1 brake (B1) |
|
|
No. 2 clutch (C2) |
|
|
|
Front planetary gear unit |
|
|
|
Engine stalls when starting off or stopping |
Valve body assembly |
|
|
Torque converter assembly |
|
Monitor Drive Pattern
MONITOR DRIVE PATTERN
1. TEST MONITOR DRIVE PATTERN FOR ECT
CAUTION:
Perform this drive pattern on a level surface and strictly observe the posted
speed limits and traffic laws while driving.
HI ...
Terminals Of Ecm
TERMINALS OF ECM
1. ECM
HINT:
The standard voltage between each pair of ECM terminals is shown in the table
below. In the table, first follow the information under "Condition". Look u ...
Other materials:
Installation
INSTALLATION
CAUTION / NOTICE / HINT
HINT:
Use the same procedure for both the RH and LH sides.
The procedure described below is for the LH side.
PROCEDURE
1. INSTALL CURTAIN SHIELD AIRBAG ASSEMBLY
(a) Insert the 6 hooks, install 7 new bolts, 2 new clips (A) with pins and 2
...
Front Right Seat Heat Sensor Circuit (B14C0)
DESCRIPTION
Output to the front seat cushion heater assembly RH temperature sensor stops
if one of the following occurs: 1) the temperature sensor is open or shorted; or
2) the temperature sensor is damaged and its output value does not change.
DTC Code
DTC Detection Cond ...
Freeze Frame Data
FREEZE FRAME DATA
1. FREEZE FRAME DATA
(a) When a DTC is stored, the 4 wheel drive control ECU stores the current vehicle
state as Freeze Frame Data.
HINT:
Freeze Frame Data at the time a DTC is stored:
When the 4 wheel drive control ECU stores data at the time a DTC is stored, no
updates w ...
