Tech Tips
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 TCM 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 SL5 circuit* | |
| TCM | ||
| No up-shift (2nd to 3rd) | Shift solenoid valve SL3 circuit* | |
| TCM | ||
| No up-shift (3rd to 4th) | Shift solenoid valve SL3 circuit* | |
| Shift solenoid valve SL4 circuit* | ||
| TCM | ||
| No up-shift (4th to 5th) | Shift solenoid valve SL2 circuit* | |
| TCM | ||
| No up-shift (5th to 6th) | Shift solenoid valve SL4 circuit* | |
| TCM | ||
| No up-shift (6th to 7th) | Shift solenoid valve SL3 circuit* | |
| TCM | ||
| No up-shift (7th to 8th) | Shift solenoid valve SL3 circuit* | |
| Shift solenoid valve SL5 circuit* | ||
| TCM | ||
| No down-shift (8th to 7th) | Shift solenoid valve SL3 circuit* | |
| TCM | ||
| No down-shift (7th to 6th) | Shift solenoid valve SL3 circuit* | |
| Shift solenoid valve SL4 circuit* | ||
| TCM | ||
| No down-shift (6th to 5th) | Shift solenoid valve SL1 circuit* | |
| Shift solenoid valve SL4 circuit* | ||
| TCM | ||
| No down-shift (5th to 4th) | Shift solenoid valve SL2 circuit* | |
| Shift solenoid valve SL4 circuit* | ||
| TCM | ||
| No down-shift (4th to 3rd) | Shift solenoid valve SL3 circuit* | |
| TCM | ||
| No down-shift (3rd to 2nd) | Shift solenoid valve SL3 circuit* | |
| Shift solenoid valve SL5 circuit* | ||
| TCM | ||
| No down-shift (2nd to 1st) | Shift solenoid valve SL5 circuit* | |
| TCM | ||
| No lock-up or no lock-up off | Shift solenoid valve SLU circuit* | |
| Transmission revolution sensor (NT) circuit* | ||
| TCM | ||
| No lock-up | Shift solenoid valve SLU circuit* | |
| Transmission revolution sensor (NT) circuit* | ||
| Transmission revolution sensor (SP2) circuit* | ||
| No. 1 ATF temperature sensor circuit* | ||
| Engine coolant temperature sensor circuit* | ||
| Throttle position sensor circuit* | ||
| TCM | ||
| No lock-up off | Shift solenoid valve SLU circuit* | |
| TCM | ||
| Shift point too high or too low | Transmission revolution sensor (NT) circuit* | |
| Transmission revolution sensor (SP2) circuit* | ||
| No. 1 ATF temperature sensor circuit* | ||
| Pattern select switch power mode circuit (w/o Active Height Control Suspension) | ||
| Pattern select switch sport mode circuit (w/ Active Height Control Suspension) | ||
| Throttle position sensor circuit* | ||
| ECM | ||
| TCM | ||
| Up-shift to 4th from 3rd occurs while engine is cold | Engine coolant temperature sensor circuit* | |
| TCM | ||
| Up-shift to 5th from 4th occurs while engine is cold | Engine coolant temperature sensor circuit* | |
| TCM | ||
| Up-shift to 6th from 5th occurs while engine is cold | Engine coolant temperature sensor circuit* | |
| TCM | ||
| Up-shift to 7th from 6th occurs while engine is cold | Engine coolant temperature sensor circuit* | |
| TCM | ||
| Up-shift to 8th from 7th occurs while engine is cold | Engine coolant temperature sensor circuit* | |
| TCM | ||
| No gear change by moving shift lever to "+" or "-" while in S | Transmission control switch circuit | |
| ECM | ||
| TCM | ||
| Harsh engagement (N to D) | Shift solenoid valve SL1 circuit* | |
| Shift solenoid valve SLT circuit* | ||
| Transmission revolution sensor (NT) circuit* | ||
| TCM | ||
| Harsh engagement (N to R) | Shift solenoid valve SL3 circuit* | |
| Shift solenoid valve SC2 circuit* | ||
| Shift solenoid valve SLT circuit* | ||
| Shift solenoid valve SLU circuit* | ||
| TCM | ||
| Harsh engagement (lock-up) | Shift solenoid valve SLU circuit* | |
| Transmission revolution sensor (NT) circuit* | ||
| Transmission revolution sensor (SP2) circuit* | ||
| TCM | ||
| Harsh engagement (any driving position) | Shift solenoid valve SL1 circuit* | |
| Shift solenoid valve SL2 circuit* | ||
| Shift solenoid valve SL3 circuit* | ||
| Shift solenoid valve SL4 circuit* | ||
| Shift solenoid valve SL5 circuit* | ||
| Shift solenoid valve SLT circuit* | ||
| Shift solenoid valve SLU circuit* | ||
| Transmission revolution sensor (NT) circuit* | ||
| Throttle position sensor circuit* | ||
| TCM | ||
| Poor acceleration | Shift solenoid valve SLT circuit* | |
| Pattern select switch 2nd start mode circuit | ||
| ECM | ||
| TCM | ||
| No engine braking | TCM | |
| No kick-down | TCM | |
| Engine stalls when starting off or stopping | Shift solenoid valve SLU circuit* | |
| TCM | ||
| 2nd start mode does not change | Pattern select switch 2nd start mode circuit | |
| ECM | ||
| TCM | ||
| Shifting malfunction | Park/neutral position switch assembly circuit* | |
| Transmission control switch circuit | ||
| ECM | ||
| TCM | ||
| ATF temperature warning indicator remains on | No. 2 ATF temperature sensor circuit* | |
| Engine coolant temperature sensor circuit* | ||
| TCM |
| Symptom | Suspected Area | See page |
|---|---|---|
| Vehicle does not move with shift lever in any forward position or reverse position | Transmission control rod | |
| Manual valve | ||
| Parking lock pawl | ||
| Rear planetary ring gear assembly | ||
| Torque converter assembly | ||
| Vehicle does not move with shift lever in R | Transmission valve body assembly | |
| No. 3 clutch (C3) | ||
| No. 2 brake (B2) | ||
| No up-shift (1st to 2nd) | Transmission valve body assembly | |
| No. 1 brake (B1) | ||
| No up-shift (2nd to 3rd) | Transmission valve body assembly | |
| No. 3 clutch (C3) | ||
| No up-shift (3rd to 4th) | Transmission valve body assembly | |
| No. 3 clutch (C3) | ||
| No. 4 clutch (C4) | ||
| No up-shift (4th to 5th) | Transmission valve body assembly | |
| No. 2 clutch (C2) | ||
| No up-shift (5th to 6th) | Transmission valve body assembly | |
| No. 4 clutch (C4) | ||
| No up-shift (6th to 7th) | Transmission valve body assembly | |
| No. 3 clutch (C3) | ||
| No up-shift (7th to 8th) | Transmission valve body assembly | |
| No. 3 clutch (C3) | ||
| No. 1 brake (B1) | ||
| No down-shift (8th to 7th) | Transmission valve body assembly | |
| No. 3 clutch (C3) | ||
| No down-shift (7th to 6th) | Transmission valve body assembly | |
| No. 3 clutch (C3) | ||
| No. 4 clutch (C4) | ||
| No down-shift (6th to 5th) | Transmission valve body assembly | |
| Forward multiple clutch (C1) | ||
| No. 4 clutch (C4) | ||
| No down-shift (5th to 4th) | Transmission valve body assembly | |
| No. 2 clutch (C2) | ||
| No. 4 clutch (C4) | ||
| No down-shift (4th to 3rd) | Transmission valve body assembly | |
| No. 3 clutch (C3) | ||
| No down-shift (3rd to 2nd) | Transmission valve body assembly | |
| No. 3 clutch (C3) | ||
| No. 1 brake (B1) | ||
| No down-shift (2nd to 1st) | Transmission valve body assembly | |
| No. 1 brake (B1) | ||
| No. 1 one-way clutch (F1) | ||
| No lock-up or no lock-up off | Transmission valve body assembly | |
| Torque converter assembly | ||
| Harsh engagement (N to D) | Transmission valve body assembly | |
| Forward multiple clutch (C1) | ||
| No. 1 one-way clutch (F1) | ||
| Harsh engagement (N to R) | Transmission valve body assembly | |
| No. 3 clutch (C3) | ||
| No. 2 brake (B2) | ||
| Harsh engagement (lock-up) | Transmission valve body assembly | |
| Torque converter assembly | ||
| Harsh engagement (1st to 2nd to 3rd to 4th to 5th to 6th to 7th to 8th) | Transmission valve body assembly | |
| Harsh engagement (1st to 2nd) | Transmission valve body assembly | |
| No. 1 brake (B1) | ||
| Harsh engagement (2nd to 3rd) | Transmission valve body assembly | |
| No. 3 clutch (C3) | ||
| No. 1 brake (B1) | ||
| Harsh engagement (3rd to 4th) | Transmission valve body assembly | |
| No. 3 clutch (C3) | ||
| No. 4 clutch (C4) | ||
| Harsh engagement (4th to 5th) | Transmission valve body assembly | |
| No. 2 clutch (C2) | ||
| No. 4 clutch (C4) | ||
| Harsh engagement (5th to 6th) | Transmission valve body assembly | |
| Forward multiple clutch (C1) | ||
| No. 2 clutch (C2) | ||
| No. 4 clutch (C4) | ||
| Harsh engagement (6th to 7th) | Transmission valve body assembly | |
| Forward multiple clutch (C1) | ||
| No. 3 clutch (C3) | ||
| No. 4 clutch (C4) | ||
| Harsh engagement (7th to 8th) | Transmission valve body assembly | |
| Forward multiple clutch (C1) | ||
| No. 3 clutch (C3) | ||
| No. 1 brake (B1) | ||
| Slip or shudder (shift lever in R) | No. 3 clutch (C3) | |
| No. 2 brake (B2) | ||
| Slip or shudder (1st) | Forward multiple clutch (C1) | |
| No. 1 one-way clutch (F1) | ||
| Slip or shudder (2nd) | Forward multiple clutch (C1) | |
| No. 1 brake (B1) | ||
| Slip or shudder (3rd) | Forward multiple clutch (C1) | |
| No. 3 clutch (C3) | ||
| Torque converter assembly | ||
| Slip or shudder (4th) | Forward multiple clutch (C1) | |
| No. 4 clutch (C4) | ||
| Torque converter assembly | ||
| Slip or shudder (5th) | Forward multiple clutch (C1) | |
| No. 2 clutch (C2) | ||
| Torque converter assembly | ||
| Slip or shudder (6th) | No. 2 clutch (C2) | |
| No. 4 clutch (C4) | ||
| Torque converter assembly | ||
| Slip or shudder (7th) | No. 2 clutch (C2) | |
| No. 3 clutch (C3) | ||
| Torque converter assembly | ||
| Slip or shudder (8th) | No. 2 clutch (C2) | |
| No. 1 brake (B1) | ||
| Torque converter assembly | ||
| No engine braking (1st) | Transmission valve body assembly | |
| Forward multiple clutch (C1) | ||
| No. 2 brake (B2) | ||
| No kick-down | Transmission valve body assembly | |
| Shift point too high or too low | Transmission valve body assembly | |
| Poor acceleration (all positions) | Transmission valve body assembly | |
| Torque converter assembly | ||
| Engine stalls when starting off or stopping | Transmission valve body assembly | |
| Torque converter assembly |