PROBLEM SYMPTOMS TABLE

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Emil Johnson
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1 Last Modified: Service Category: Drivetrain 1.6 T Section: Automatic Transmission/Transaxle Model Year: 2007 Model: 4Runner Doc ID: RM000000W7304AX Title: A750E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM (for 1GRFE): PROBLEM SYMPTOMS TABLE (2007 4Runner) PROBLEM SYMPTOMS TABLE HINT: If a normal code is displayed during the diagnostic trouble code check although the trouble still occurs, check the electrical circuits for each symptom in the order given in the s on the following pages and proceed to the page given for troubleshooting. The Matrix Chart is divided into 3 chapters. Chapter 1: Refer to the table below when the trouble cause is considered to be electrical. If the instruction "Proceed to next circuit inspection shown on matrix " is given in the flow of 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, check and replace the ECM. 1. Chapter 1: Electronic Circuit Matrix Chart SYMPTOM SUSPECTED AREA SEE PAGE No upshift (A particular gear, from 1st to 4th gear, is not upshifted) (S1) circuit 2. Shift solenoid valve (S2) circuit circuit (D 4) 2. Engine coolant temp. sensor circuit No upshift (4th > 5th) 3. Speed sensor NT circuit 4. Shift solenoid valve (SL1) circuit 5. Shift solenoid valve (SL2)

2 circuit 6. Shift solenoid valve (SR) circuit 7. ECM 1. Engine coolant temp. sensor circuit No upshift (3rd > 4th) 2. Shift solenoid valve (S2) circuit circuit (2 L) No upshift (1st > 2nd) 2. Shift solenoid valve (S2) circuit circuit (D 4) 2. Shift solenoid valve (SL1) circuit No downshift (5th > 4th) 3. Shift solenoid valve (SL2) circuit 4. Shift solenoid valve (SR) circuit 5. ECM circuit (2 L) No downshift (2nd > 1st) 2. Shift solenoid valve (S2) circuit No downshift (A particular gear, from 1st to 4th gear, is not downshifted) (S1) circuit 2. Shift solenoid valve (S2) circuit 1. ATF temperature sensor circuit No lockup 2. Stop light switch circuit 3. Speed sensor NT circuit 4. Shift solenoid valve (SLU)

3 circuit 5. Engine coolant temp. sensor circuit 6. ECM No lockup off (SLU) circuit (SLT) circuit 2. Speed sensor NT circuit 3. Speed sensor SP2 circuit Shift point too high or too low 4. Throttle position sensor circuit 5. ATF temperature sensor circuit 6. ECM Upshift to 5th from 4th while shift lever is in 4 position Upshift to 5th from 4th while engine is cold Upshift to 4th from 3rd while shift lever is in 3 position Upshift to 3rd from 2nd while shift lever is in 2 position Upshift to 2nd from 1st while shift lever is in L position circuit (D 4) 1. Engine coolant temp. sensor circuit 1. Park/neutral position switch circuit 1. Park/neutral position switch circuit circuit (2 L) 1. Speed sensor NT circuit Harsh engagement (N > D) 2. Shift solenoid valve (SL1) circuit 3. Shift solenoid valve (SLT) circuit 4. ECM

4 1. Speed sensor NT circuit 2. Speed sensor SP2 circuit Harsh engagement (Lockup) 3. Shift solenoid valve (SLU) circuit 4. ECM Harsh engagement (Any driving position) ECM 1. ATF temperature sensor No. 2 circuit Poor acceleration 2. Engine coolant temp. sensor circuit 3. Shift solenoid valve (SLT) circuit 4. ECM No engine braking No kickdown Engine stalls when starting off or stopping AT Oil Temp. warning light remains on, Lockup at 3rd gear and/or shift point too high ECM ECM (SLU) circuit 1. ATF temperature sensor No. 2 circuit 2. Engine coolant temp. sensor circuit Malfunction in shifting 1. Park/neutral position switch circuit 2. Chapter 2: Onvehicle Repair SYMPTOM SUSPECTED AREA SEE PAGE 1. Transmission control cable Vehicle does not move with shift lever in any forward position and reverse position 2. Manual valve 3. Parking lock pawl 4. Offvehicle repair matrix

5 Vehicle does not move with shift lever in R position No upshift (1st > 2nd) No upshift (2nd > 3rd) No upshift (3rd > 4th) No upshift (4th > 5th) No downshift (5th > 4th) No downshift (4th > 3rd) No downshift (3rd > 2nd) No downshift (2nd > 1st) No lockup or No lockup off Harsh engagement (N > D) 2. Offvehicle repair matrix 2. Offvehicle repair matrix 2. Offvehicle repair matrix 2. Offvehicle repair matrix 2. Offvehicle repair matrix 2. Offvehicle repair matrix 2. Offvehicle repair matrix 2. Offvehicle repair matrix 2. Offvehicle repair matrix (SLU) 3. Offvehicle repair matrix (SL1) 3. C1 accumulator 4. Offvehicle repair matrix

6 (SLU) Harsh engagement (Lockup) 3. Offvehicle repair matrix (SLT) Harsh engagement (N > R) 2. Shift solenoid valve (SLU) 3. Valve body assembly 4. C3 accumulator 5. Offvehicle repair matrix (SLT) Harsh engagement (1st > 2nd > 3rd > 4th > 5th) 2. Shift solenoid valve (SL1) Harsh engagement (1st > 2nd) Harsh engagement (2nd > 3rd) Harsh engagement (3rd > 4th) Harsh engagement (4th > 5th) 3. Valve body assembly 2. B3 accumulator 3. Offvehicle repair matrix 2. C3 accumulator 3. Offvehicle repair matrix 2. C2 accumulator 3. Offvehicle repair matrix (SL1) 2. Shift solenoid valve (SL2) 3. Valve body assembly 4. Offvehicle repair matrix

7 (SL1) Harsh engagement (5th > 4th) 2. Shift solenoid valve (SL2) 3. Valve body assembly 4. Offvehicle repair matrix 1. Transmission control cable Slip or shudder (Forward and reverse) 3. Oil strainer 4. Offvehicle repair matrix No engine braking (1st: L position) No engine braking (2nd: 2 position) No kickdown Shift point too high or too low Poor acceleration Engine stalls when starting off or stopping 2. Offvehicle repair matrix 2. Offvehicle repair matrix Valve body assembly (SLT) 2. Shift solenoid valve (SL1) 3. Valve body assembly (SLT) (SLU) 3. Chapter 3: OffVehicle Repair SYMPTOM SUSPECTED AREA SEE PAGE 1. Rear planetary gear

8 Vehicle does not move with shift lever in any forward position and reverse position unit 2. Torque converter clutch 1. Brake No. 4 (B4) Vehicle does not move with shift lever in R position 2. Clutch No. 3 (C3) 3. Oneway clutch No Brake No. 3 (B3) No upshift (1st > 2nd) 2. Oneway clutch No Oneway clutch No. 2 (F2) No upshift (2nd > 3rd) No upshift (3rd > 4th) No upshift (4th > 5th) No lockup or No lockup off Clutch No. 3 (C3) Clutch No. 2 (C2) 1. Brake No. 1 (B1) 2. Clutch No. 1 (C1) Torque converter clutch 1. Clutch No. 1 (C1) Harsh engagement (N > D) 2. Oneway clutch No. 3 (F3) 1. Clutch No. 3 (C3) Harsh engagement (N > R) 2. Brake No. 4 (B4) 3. Oneway clutch No Brake No. 3 (B3) Harsh engagement (1 > 2) 2. Oneway clutch No Oneway clutch No. 2 (F2) Harsh engagement (2 > 3) Harsh engagement (3 > 4) Harsh engagement (4 > 5th) Harsh engagement (Lockup) Clutch No. 3 (C3) Clutch No. 2 (C2) 1. Brake No. 1 (B1) 2. Clutch No. 1 (C1) Torque converter clutch 1. Oneway clutch No. 1

9 Slip or shudder (Forward and reverse: After warmup) Slip or shudder (Particular position: Just after engine starts) 2. Clutch No. 3 (C3) 3. Torque converter clutch Torque converter clutch 1. Brake No. 4 (B4) Slip or shudder (R position) 2. Oneway clutch No Clutch No. 3 (C3) 1. Clutch No. 1 (C1) Slip or shudder (1st) 2. Oneway clutch No. 3 (F3) 1. Clutch No.1 (C1) 2. Brake No. 3 (B3) Slip or shudder (2nd) 3. Oneway clutch No Oneway clutch No. 2 (F2) 1. Clutch No. 1 (C1) Slip or shudder (3rd) Slip or shudder (4th) 2. Clutch No. 3 (C3) 3. Oneway clutch No Clutch No. 1 (C1) 2. Clutch No. 2 (C2) 1. Clutch No. 2 (C2) Slip or shudder (5th) 2. Clutch No. 3 (C3) 3. Brake No. 1 (B1) No engine braking (1st 4th: D position) No engine braking (1st: L position) No engine braking (2nd: 2 position) No engine braking (3rd: 3 position) Poor acceleration (All positions) Clutch No. 1 (C1) Brake No. 4 (B4) Brake No. 2 (B2) Brake No. 1 (B1) Torque converter clutch 1. Clutch No. 1 (C1) 2. Clutch No. 3 (C3)

10 3. Brake No. 1 (B1) Poor acceleration (5th) Engine stalls when starting off or stopping 4. Front planetary gear unit Torque converter clutch

PROBLEM SYMPTOMS TABLE

PROBLEM SYMPTOMS TABLE A750F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM (for 1GRFE)... Last Modified: 4262007 Service Category: Drivetrain 1.6 T Section: Automatic Transmission/Transaxle Model Year: 2007 Model: 4Runner