AUTOMATIC TRANSMISSION SYSTEM PROBLEM SYMPTOMS TABLE
Tech Tips
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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.
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Inspect the fuses and relays related to this system before inspecting the suspected areas below.
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The Matrix Chart is divided into 3 chapters.
Chapter 1:
Refer to the table below when the cause of the trouble is considered to be electrical.
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If the instruction "Proceed to Next Suspected Area Shown in Problem Symptoms Table" is given in the flowchart of a circuit, proceed to the next suspected area in the table to continue the check.
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If the trouble still occurs even though there are no abnormalities in any of the other circuits, check the TCM and replace it if necessary.
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*: When the circuit is defective, a DTC may be stored.
| Symptom | Suspected Area | Link |
|---|---|---|
| Up-shifts between 1st and 4th gear do not occur | Shift solenoid valve S1 circuit* | Click here |
| Shift solenoid valve S2 circuit* | Click here | |
| TCM | ||
| No up-shift (4th to 5th) | Transmission revolution sensor (NT) circuit* | Click here |
| Shift solenoid valve SL1 circuit* | Click here | |
| Shift solenoid valve SL2 circuit* | Click here | |
| Shift solenoid valve SR circuit* | Click here | |
| TCM | ||
| No up-shift (3rd to 4th) | Shift solenoid valve S2 circuit* | Click here |
| TCM | ||
| No up-shift (1st to 2nd) | TCM | |
| No down-shift (5th to 4th) | Shift solenoid valve SL1 circuit* | Click here |
| Shift solenoid valve SL2 circuit* | Click here | |
| Shift solenoid valve SR circuit* | Click here | |
| TCM | ||
| No down-shift (2nd to 1st) | Shift solenoid valve S2 circuit* | Click here |
| TCM | ||
| Down-shifts between 4th and 1st gear do not occur | Shift solenoid valve S1 circuit* | Click here |
| Shift solenoid valve S2 circuit* | Click here | |
| TCM | ||
| No lock-up | No. 1 ATF temperature sensor circuit* | Click here |
| L4 position switch circuit* | ||
| Stop light switch circuit* | Click here | |
| Transmission revolution sensor (NT) circuit* | Click here | |
| Shift solenoid valve SLU circuit* | Click here | |
| Engine coolant temperature sensor circuit* | ||
| TCM | ||
| No lock-up off | Shift solenoid valve SLU circuit* | Click here |
| TCM | ||
| Shift point too high or too low | Shift solenoid valve SLT circuit* | Click here |
| Transmission revolution sensor (NT) circuit* | Click here | |
| Transmission revolution sensor (SP2) circuit* | Click here | |
| Throttle position sensor circuit* | ||
| No. 1 ATF temperature sensor circuit* | Click here | |
| L4 position switch circuit* | ||
| TCM | ||
| Up-shift to 5th from 4th while engine is cold | Engine coolant temperature sensor circuit* | |
| TCM | ||
| Harsh engagement (N to D) | Transmission revolution sensor (NT) circuit* | Click here |
| Shift solenoid valve SL1 circuit* | Click here | |
| Shift solenoid valve SLT circuit* | Click here | |
| TCM | ||
| Harsh engagement (lock-up) | Transmission revolution sensor (NT) circuit* | Click here |
| Transmission revolution sensor (SP2) circuit* | Click here | |
| Shift solenoid valve SLU circuit* | Click here | |
| TCM | ||
| Harsh engagement (any gear position) | TCM | |
| Poor acceleration | No. 2 ATF temperature sensor circuit* | Click here |
| Engine coolant temperature sensor circuit* | ||
| Shift solenoid valve SLT circuit* | Click here | |
| TCM | ||
| No engine braking | TCM | |
| No kick-down | TCM | |
| Engine stalls when starting off or stopping | Shift solenoid valve SLU circuit* | Click here |
| TCM | ||
| ATF temperature warning indicator remains on, lock-up in 3rd gear and/or shift point too high | No. 2 ATF temperature sensor circuit* | Click here |
| Engine coolant temperature sensor circuit* | ||
| TCM | ||
| No gear change by moving shift lever to "+" or "-" while in S | Transmission control switch circuit | |
| TCM | ||
| Shifting malfunction | Park/neutral position switch circuit* | |
| Transmission control switch circuit | ||
| TCM |
| Symptom | Suspected Area | Link |
|---|---|---|
| Vehicle moves forward with shift lever in N | Transmission control cable | |
| Manual valve | ||
| Off-vehicle repair matrix chart | - | |
| Vehicle does not move with shift lever in any forward position or reverse position | Transmission control cable | Click here |
| Manual valve | ||
| Parking lock pawl | ||
| Off-vehicle repair matrix chart | - | |
| Vehicle does not move with shift lever in R | Valve body assembly | Click here |
| Off-vehicle repair matrix chart | - | |
| No up-shift (1st to 2nd) | Valve body assembly | Click here |
| Off-vehicle repair matrix chart | - | |
| No up-shift (2nd to 3rd) | Valve body assembly | Click here |
| Off-vehicle repair matrix chart | - | |
| No up-shift (3rd to 4th) | Valve body assembly | Click here |
| Off-vehicle repair matrix chart | - | |
| No up-shift (4th to 5th) | Valve body assembly | Click here |
| Off-vehicle repair matrix chart | - | |
| No down-shift (5th to 4th) | Valve body assembly | Click here |
| Off-vehicle repair matrix chart | - | |
| No down-shift (4th to 3rd) | Valve body assembly | Click here |
| Off-vehicle repair matrix chart | - | |
| No down-shift (3rd to 2nd) | Valve body assembly | Click here |
| Off-vehicle repair matrix chart | - | |
| No down-shift (2nd to 1st) | Valve body assembly | Click here |
| Off-vehicle repair matrix chart | - | |
| No lock-up or no lock-up off | Shift solenoid valve SLU | Click here |
| Valve body assembly | Click here | |
| Off-vehicle repair matrix chart | - | |
| Harsh engagement (N to D) | Shift solenoid valve SL1 | Click here |
| Valve body assembly | Click here | |
| C1 accumulator | ||
| Off-vehicle repair matrix chart | - | |
| Harsh engagement (lock-up) | Shift solenoid valve SLU | Click here |
| Valve body assembly | Click here | |
| Off-vehicle repair matrix chart | - | |
| Harsh engagement (N to R) | Shift solenoid valve SLT | Click here |
| Shift solenoid valve SLU | Click here | |
| Valve body assembly | Click here | |
| C3 accumulator | ||
| Off-vehicle repair matrix chart | - | |
| Harsh engagement (1st to 2nd to 3rd to 4th to 5th) | Shift solenoid valve SLT | Click here |
| Shift solenoid valve SL1 | Click here | |
| Valve body assembly | Click here | |
| Harsh engagement (1st to 2nd) | Valve body assembly | Click here |
| B3 accumulator | ||
| Off-vehicle repair matrix chart | - | |
| Harsh engagement (2nd to 3rd) | Valve body assembly | Click here |
| C3 accumulator | ||
| Off-vehicle repair matrix chart | - | |
| Harsh engagement (3rd to 4th) | Valve body assembly | Click here |
| C2 accumulator | ||
| Off-vehicle repair matrix chart | - | |
| Harsh engagement (4th to 5th) | Shift solenoid valve SL1 | Click here |
| Shift solenoid valve SL2 | Click here | |
| Valve body assembly | Click here | |
| Off-vehicle repair matrix chart | - | |
| Harsh engagement (5th to 4th) | Shift solenoid valve SL1 | Click here |
| Shift solenoid valve SL2 | Click here | |
| Valve body assembly | Click here | |
| Off-vehicle repair matrix chart | - | |
| Slip or shudder (forward and reverse) | Transmission control cable | Click here |
| Valve body assembly | Click here | |
| Oil strainer | Click here | |
| Off-vehicle repair matrix chart | - | |
| No kick-down | Valve body assembly | Click here |
| Shift point too high or too low | Shift solenoid valve SLT | Click here |
| Shift solenoid valve SL1 | Click here | |
| Valve body assembly | Click here | |
| Poor acceleration | Shift solenoid valve SLT | Click here |
| Valve body assembly | Click here | |
| Engine stalls when starting off or stopping | Shift solenoid valve SLU | Click here |
| Valve body assembly | Click here |
| Symptom | Suspected Area | Link |
|---|---|---|
| Vehicle moves forward with shift lever in N | Clutch No. 1 (C1) | |
| One-way clutch No. 3 (F3) | ||
| Vehicle does not move with shift lever in any forward position or reverse position | Rear planetary gear unit | |
| Torque converter assembly | Click here | |
| Vehicle does not move with shift lever in R | Brake No. 4 (B4) | |
| Clutch No. 3 (C3) | ||
| One-way clutch No. 1 (F1) | ||
| No up-shift (1st to 2nd) | Brake No. 3 (B3) | |
| One-way clutch No. 1 (F1) | ||
| One-way clutch No. 2 (F2) | ||
| No up-shift (2nd to 3rd) | Clutch No. 3 (C3) | |
| No up-shift (3rd to 4th) | Clutch No. 2 (C2) | |
| No up-shift (4th to 5th) | Brake No. 1 (B1) | |
| Clutch No. 1 (C1) | ||
| No lock-up or no lock-up off | Torque converter assembly | Click here |
| Harsh engagement (N to D) | Clutch No. 1 (C1) | |
| One-way clutch No. 3 (F3) | ||
| Harsh engagement (N to R) | Clutch No. 3 (C3) | |
| Brake No. 4 (B4) | ||
| One-way clutch No. 1 (F1) | ||
| Harsh engagement (1st to 2nd) | Brake No. 3 (B3) | |
| One-way clutch No. 1 (F1) | ||
| One-way clutch No. 2 (F2) | ||
| Harsh engagement (2nd to 3rd) | Clutch No. 3 (C3) | |
| Harsh engagement (3rd to 4th) | Clutch No. 2 (C2) | |
| Harsh engagement (4th to 5th) | Brake No. 1 (B1) | |
| Clutch No. 1 (C1) | ||
| Harsh engagement (lock-up) | Torque converter assembly | Click here |
| Slip or shudder (forward and reverse, after engine is warmed up) | One-way clutch No. 1 (F1) | |
| Clutch No. 3 (C3) | ||
| Torque converter assembly | Click here | |
| Slip or shudder (particular position, just after engine starts) | Torque converter assembly | Click here |
| Slip or shudder (R position) | Brake No. 4 (B4) | |
| One-way clutch No. 1 (F1) | ||
| Clutch No. 3 (C3) | ||
| Slip or shudder (1st) | Clutch No. 1 (C1) | |
| One-way clutch No. 3 (F3) | ||
| Slip or shudder (2nd) | Clutch No. 1 (C1) | |
| Brake No. 3 (B3) | ||
| One-way clutch No. 1 (F1) | ||
| One-way clutch No. 2 (F2) | ||
| Slip or shudder (3rd) | Clutch No. 1 (C1) | |
| Clutch No. 3 (C3) | ||
| One-way clutch No. 1 (F1) | ||
| Slip or shudder (4th) | Clutch No. 1 (C1) | |
| Clutch No. 2 (C2) | ||
| Slip or shudder (5th) | Clutch No. 2 (C2) | |
| Clutch No. 3 (C3) | ||
| Brake No. 1 (B1) | ||
| No engine braking (1st to 4th, shift lever in D) | Clutch No. 1 (C1) | |
| Poor acceleration (all positions) | Torque converter assembly | Click here |
| Poor acceleration (5th) | Clutch No. 1 (C1) | |
| Clutch No. 3 (C3) | ||
| Brake No. 1 (B1) | ||
| Front planetary gear unit | ||
| Engine stalls when starting off or stopping | Torque converter assembly | Click here |