PROBLEM SYMPTOMS TABLE
HINT
If a normal code is displayed during the DTC check but the trouble still occurs, check the circuits for each symptom in the order given in the charts on the following pages and proceed to the page given for troubleshooting.
The Matrix Chart is divided into 3 chapters.
- If the instruction "Proceed to next circuit inspection shown on matrix chart" is given in the flow chart for each circuit, proceed to the circuit with the next highest number in the table to continue the check.
- If the trouble still occurs even though there are no abnormalities in any of the other circuits, then check and replace the ECM.
CHAPTER 1: ELECTRONIC CIRCUIT MATRIX CHART
| Symptom | Suspect Area | See |
|---|---|---|
| No up shift (A particular gear, from 1st to 4th gear, is not up-shifted) | ECM | ELECTRONIC CIRCUIT INSPECTION PROCEDURE |
| No up shift (4th --> 5th) | Transmission control switch circuit ECM | DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT) ELECTRONIC CIRCUIT INSPECTION PROCEDURE |
| No down shift (5th --> 4th) | Transmission control switch circuit ECM | CIRCUIT DESCRIPTION ELECTRONIC CIRCUIT INSPECTION PROCEDURE |
| No down shift (A particular gear, from 1st to 4th gear, is not up-shifted) | ECM | ELECTRONIC CIRCUIT INSPECTION PROCEDURE |
| No lock up | ECM | ELECTRONIC CIRCUIT INSPECTION PROCEDURE |
| No lock up off | ECM | ELECTRONIC CIRCUIT INSPECTION PROCEDURE |
| Shift point too high or too low | Throttle position sensor circuit PATTERN SELECT SWITCH CIRCUIT ECM | PATTERN SELECT SWITCH CIRCUIT ELECTRONIC CIRCUIT INSPECTION PROCEDURE |
| Up shift to 5th from 4th while shift lever is 4 position | Transmission control switch circuit ECM | CIRCUIT DESCRIPTION ELECTRONIC CIRCUIT INSPECTION PROCEDURE |
| Up shift to 5th from 4th while engine is cold | Engine coolant temp, sensor circuit ECM | ELECTRONIC CIRCUIT INSPECTION PROCEDURE |
| No kick down | ECM | ELECTRONIC CIRCUIT INSPECTION PROCEDURE |
| No pattern select | PATTERN SELECT SWITCH CIRCUIT ECM | PATTERN SELECT SWITCH CIRCUIT ELECTRONIC CIRCUIT INSPECTION PROCEDURE |
| Engine stalls when starting off or stopping | ECM | ELECTRONIC CIRCUIT INSPECTION PROCEDURE |
| No kick down | ECM | ELECTRONIC CIRCUIT INSPECTION PROCEDURE |
| No 2nd start | PATTERN SELECT SWITCH CIRCUIT ECM | PATTERN SELECT SWITCH CIRCUIT ELECTRONIC CIRCUIT INSPECTION PROCEDURE |
PROBLEM SYMPTOMS (CHAPTER 1: ELECTRONIC CIRCUIT MATRIX)
CHAPTER 2: ON-VEHICLE REPAIR
(*: A650E AUTOMATIC TRANSMISSION Repair Manual Pub. No. RM843U)
| Symptom | Suspect Area | See |
|---|---|---|
| Vehicle does not move in any forward position and reverse positions | Transmission control rod Manual valve Parking lock pawl Off-vehicle repair matrix chart | * * |
| Vehicle does not move in R position | Reverse control valve Off-vehicle repair matrix chart | * |
| Vehicle does not move in particular position or positions (Except R position) | Off-vehicle repair matrix chart | |
| No up shift (1st --> 2nd) | 1-2 shift valve Off-vehicle repair matrix chart | * |
| No up shift (2nd --> 3rd) | 2-3 shift valve Off-vehicle repair matrix chart | * |
| No up shift (3rd --> 4th) | 3-4 shift valve Off-vehicle repair matrix chart | * |
| No up shift (4th --> 5th) | 4-5 shift valve Off-vehicle repair matrix chart | * |
| No down shift (5th --> 4th) | 4-5 shift valve Off-vehicle repair matrix chart | * |
| No down shift (4th --> 3rd) | 3-4 shift valve Off-vehicle repair matrix chart | * |
| No down shift (3rd --> 2nd) | 2-3 shift valve Off-vehicle repair matrix chart | * |
| No down shift (2nd --> 1st) | 1-2 shift valve Off-vehicle repair matrix chart | * |
| No lock up or No lock up off | Lock up control valve Lock up relay valve Off-vehicle repair matrix chart | * * |
| Harsh engagement (N --> D) | Accumulator control valve Solenoid modulator valve C 1 accumulator Orifice control valve Off-vehicle repair matrix chart | * * * * |
| Harsh engagement (Lock up) | Lock up control valve Lock up relay valve Solenoid relay valve Off-vehicle repair matrix chart | * * * |
| Harsh engagement (N --> R) | Accumulator control valve C 2 accumulator Solenoid modulator valve Off-vehicle repair matrix chart | * * * |
| Harsh engagement (2 --> L) | Coast brake control valve | * |
| Harsh engagement (2nd --> 3rd --> 4th --> 5th) | Accumulator control valve Solenoid modulator valve | * * |
| Harsh engagement (1st --> 2nd) | Solenoid modulator valve B3 control valve B2 release control valve Solenoid relay valve Off-vehicle repair matrix chart | * * * * |
| Harsh engagement (2nd -->3rd) | Accumulator control valve Solenoid modulator valve B2 accumulator B3 control valve B2 release control valve Solenoid relay valve Off-vehicle repair matrix chart | * * * * * * |
| Harsh engagement (3rd --> 4th) | Accumulator control valve Solenoid modulator valve C2 accumulator Off-vehicle repair matrix chart | * * * |
| Harsh engagement (4th --> 5th) | Accumulator control valve Solenoid modulator valve Bo accumulator Off-vehicle repair matrix chart | * * * |
| Harsh engagement (5th --> 4th) | Accumulator control valve Solenoid modulator valve Co accumulator Off-vehicle repair matrix chart | * * * |
| Slip or shudder (Forward and reverse) | Transmission control rod Oil strainer Pressure relief valve Off-vehicle repair matrix chart | * * PARK/NEUTRAL POSITION SWITCH ASSY |
| Slip or shudder (Particular position) | Transmission control rod Off-vehicle repair matrix chart | PARK/NEUTRAL POSITION SWITCH ASSY |
| No engine braking (1st: L position) | Coast brake control valve B-4 relay valve Off-vehicle repair matrix chart | * * |
| No engine braking (2nd: 2 position) | Coast brake control valve Off-vehicle repair matrix chart | * |
| No kick down | 1-2 shift valve 2-3 shift valve 3-4 shift valve | * * * |
PROBLEM SYMPTOMS (CHAPTER 2: ON-VEHICLE REPAIR)
CHAPTER 3: OFF-VEHICLE REPAIR
(*: A650E AUTOMATIC TRANSMISSION Repair Manual Pub. No. RM843U)
| Symptom | Suspect Area | See |
|---|---|---|
| Vehicle does not move in any forward position and reverse positions | O/D one-way clutch (F 0 ) O/D direct clutch (C 0 ) O/D planetary gear unit Torque converter clutch | * * * TORQUE CONVERTER CLUTCH AND DRIVE PLATE |
| Vehicle does not move in R position | Center and rear planetary gear unit Direct clutch (C 2 ) 1st & reverse brake (B 4 ) O/D brake- (B 0 ) | * * * * |
| No up shift (1st -->2nd) | 2nd brake (B 3 ) | * |
| No up shift (2nd -->3rd) | 3rd brake (B 2 ) One-way clutch No. 1 (F 1 ) | * * |
| No up shift (3rd -->4th) | Direct clutch | * |
| No up shift (4th -->5th) | O/D brake (B 0 ) | 8 |
| No lock up or No lock up off | Torque converter clutch | TORQUE CONVERTER CLUTCH AND DRIVE PLATE |
| Harsh engagement (N -->D) | Forward clutch (C 1 ) O/D one-way clutch (F 0 ) One-way clutch No. 2 (F 2 ) | * * * |
| Harsh engagement (N -->R) | Direct clutch (C 2 ) O/D brake (B 0 ) 1st & reverse brake (B 4 ) | * * * |
| Harsh engagement (1 -->2) | 2nd brake (B 3 ) | * |
| Harsh engagement (2 -->3) | 3rd brake (B 2 ) 2nd brake (B 3 ) One-way clutch No. 1 (F 1 ) | * * * |
| Harsh engagement (3 -->4) | Direct clutch (C 2 ) | * |
| Harsh engagement (4 -->5th) | O/D brake (B 0 ) O/D direct clutch (C 0 ) | * * |
| Harsh engagement (Lock up) | Torque converter clutch | TORQUE CONVERTER CLUTCH AND DRIVE PLATE |
| Slip or shudder (Forward and reverse: After warm-up) | O/D one-way clutch (F 0 ) O/D direct clutch (C 0 ) Torque converter clutch | * * TORQUE CONVERTER CLUTCH AND DRIVE PLATE |
| Slip or shudder (Particular position: Just after engine starts) | Torque converter clutch | TORQUE CONVERTER CLUTCH AND DRIVE PLATE |
| Slip or shudder (R position) | Direct clutch (C 2 ) O/D brake (B 0 ) 1st & reverse brake (B 4 ) | * * * |
| Slip or shudder (1st) | Forward clutch (C 1 ) No. 2 one-way clutch (F 2 ) | * * |
| Slip or shudder (2nd) | 2nd brake (B 3 ) | * |
| Slip or shudder (3rd) | 3rd coast brake (B 1 ) 3rd brake (B 2 ) One-way clutch No. 1 (F 1 ) | * * * |
| Slip or shudder (4th) | Direct clutch | * |
| Slip or shudder (5th) | O/D brake (B 0 ) | * |
| No engine braking (1st -->4th: D position) | O/D direct clutch (C 0 ) | * |
| No engine braking (1st: L position) | 1st & reverse brake (B 4 ) | * |
| No engine braking | (2nd: 2 position) 2nd brake (B 3 ) | * |
| No engine braking | (3rd: 3 position) 3rd coast brake (B 1 ) | * |
| Poor acceleration (All positions) | Torque converter clutch | TORQUE CONVERTER CLUTCH AND DRIVE PLATE |
| Poor acceleration (5th) | O/D brake (B 0 ) O/D planetary gear unit | * * |
| Engine stalls when starting off or stopping | Torque converter clutch | TORQUE CONVERTER CLUTCH AND DRIVE PLATE |
PROBLEM SYMPTOMS (CHAPTER 3: OFF-VEHICLE REPAIR)