Lexus ES300 (1997 year). Manual — part 347
–
DIAGNOSTICS
AUTOMATIC TRANSAXLE
DI–165
317
1997 LEXUS ES300 (RM511U)
No lock–up or No lock–up off
1. Shift solenoid valve SL circuit
2. Stop light switch circuit
3. Throttle position sensor circuit
4. Vehicle speed sensor circuit
5. On–vehicle repair matrix chart
6. Off–vehicle repair matrix chart
7. ECM
Shift point too high or too low
1. Throttle position sensor circuit
2. Vehicle speed sensor circuit
3. ECM
Up–shift to 2nd while in L position
1. Park/neutral position switch circuit
2. ECM
Up–shift to 3rd while in L position
1. Park/neutral position switch circuit
2. ECM
Up–shift to O/D from 3rd
1. O/D main switch circuit
2. ECM
Up–shift to O/D from 3rd while engine is cold
1. Engine coolant temp. sensor circuit
2. ECM
Harsh engagement (N
→
D)
1. On–vehicle repair matrix chart
2. Off–vehicle repair matrix chart
3. ECM
Harsh engagement (Lock–up)
1. Shift solenoid valve SL circuit
2. Throttle position sensor circuit
3. Vehicle speed sensor circuit
4. On–vehicle repair matrix chart
5. Off–vehicle repair matrix chart
6. ECM
Harsh engagement (Any driving position)
1. Throttle position sensor circuit
2. Vehicle speed sensor circuit
3. On–vehicle repair matrix chart
4. Off–vehicle repair matrix chart
5. ECM
Slip or shudder (Forward and reverse)
1. On–vehicle repair matrix chart
2. Off–vehicle repair matrix chart
No engine braking
1. On–vehicle repair matrix chart
2. Off–vehicle repair matrix chart
Poor acceleration
1. Throttle position sensor circuit
2. Vehicle speed sensor circuit
3. Shift solenoid valve No.1 and No.2 circuit
4. Shift solenoid valve SL circuit
5. Off–vehicle repair matrix chart
6. ECM
Large shift shock or engine stalls when starting off or stopping
1. Shift solenoid valve SL circuit
2. Off–vehicle repair matrix chart
3. ECM
DI–166
–
DIAGNOSTICS
AUTOMATIC TRANSAXLE
318
1997 LEXUS ES300 (RM511U)
2.
Chapter 2: On–Vehicle Repair
(
: A541E AUTOMATIC TRANSAXLE Repair Manual Pub. No. RM530U)
Symptom
Suspect Area
See page
Vehicle does not move in any forward position and reverse posi-
tion
1. Manual valve
2. Throttle valve
3. Primary regulator valve
4. Off–vehicle repair matrix chart
Vehicle does not move in R position
1. Off–vehicle repair matrix chart
No up–shift (1st
→
2nd)
1. 1–2 shift valve
2. Off–vehicle repair matrix chart
No up–shift (2nd
→
3rd)
1. 2–3 shift valve
2. Off–vehicle repair matrix chart
No up–shift (3rd
→
O/D)
1. 3–4 shift valve
2. Off–vehicle repair matrix chart
No down–shift (O/D
→
3rd)
1. 3–4 shift valve
No down–shift (3rd
→
2nd)
1. 2–3 shift valve
No down–shift (2nd
→
1st)
1. 1–2 shift valve
No lock–up or No lock–up off
1. Lock–up relay valve
2. Off–vehicle repair matrix chart
Harsh engagement (N
→
D)
1. C
1
accumulator
2. Off–vehicle repair matrix chart
Harsh engagement (N
→
R)
1. C
2
accumulator
2. No.1 accumulator control valve
3. Off–vehicle repair matrix chart
Harsh engagement (N
→
L)
1. Low coast modulator valve
Harsh engagement (Lock–up)
1. Lock–up relay valve
2. Off–vehicle repair matrix chart
Harsh engagement (1st
→
2nd
→
3rd
→
O/D)
1. Throttle modulator valve
2. Cut back valve
3. Throttle valve
Harsh engagement (2nd
→
3rd)
1. C
2
accumulator
Harsh engagement (3rd
→
O/D)
1. B
0
accumulator
Harsh engagement (O/D
→
3rd)
1. C
0
accumulator
2. B
0
accumulator
Slip or shudder (Forward and reverse)
1. Throttle valve
2. Oil strainer
3. Off–vehicle repair matrix chart
No engine braking (1st: L position)
1. Low coast modulator valve
2. Off–vehicle repair matrix chart
No engine braking (2nd: 2 position)
1. 2nd coast modulator valve
2. Off–vehicle repair matrix chart
No kick–down
1. 1–2 shift valve
2. 2–3 shift valve
3. 3–4 shift valve
–
DIAGNOSTICS
AUTOMATIC TRANSAXLE
DI–167
319
1997 LEXUS ES300 (RM511U)
3.
Chapter 3: Off–Vehicle Repair
(
: A541E AUTOMATIC TRANSAXLE Repair Manual Pub. No. RM530U)
Symptom
Suspect Area
See page
Vehicle does not move in any forward position and reverse posi-
tion
1. Front and rear planetary gear
2. O/D planetary gear
3. O/D one–way clutch (F
0
)
4. O/D direct clutch (C
0
)
5. Forward clutch (C
1
)
6. O/D brake (B
0
)
Vehicle does not move in R position
1. Front and rear planetary gear unit
2. Direct clutch (C
2
)
3. O/D direct clutch (C
0
)
4. 1st and reverse brake (B
3
)
No up–shift (1st
→
2nd)
1. No. 1 one–way clutch (F
1
)
2. 2nd brake (B
2
)
No up–shift (2nd
→
3rd)
1. Direct clutch (C
2
)
No up–shift (3rd
→
O/D)
1. O/D brake (B
0
)
No lock–up or No lock–up off
1. Torque converter clutch
Harsh engagement (N
→
D)
1. Forward clutch (C
1
)
2. O/D one–way clutch (F
0
)
3. No. 2 one–way clutch (F
2
)
Harsh engagement (N
→
R)
1. Direct clutch (C
2
)
2. 1st and reverse brake (B
3
)
Harsh engagement (Lock–up)
1. Torque converter clutch
Slip or shudder (Forward position: After warm–up)
1. Torque converter clutch
2. O/D direct clutch (C
0
)
3. Forward clutch (C
1
)
4. O/D one–way clutch (F
0
)
Slip or shudder (R position)
1. Direct clutch (C
2
)
2. 1st and reverse brake (B
3
)
3. O/D direct clutch (C
0
)
Slip or shudder (1st)
1. No. 2 one–way clutch (F
2
)
Slip or shudder (2nd)
1. No. 1 one–way clutch (F
1
)
2. 2nd brake (B
2
)
Slip or shudder (3rd)
1. Direct clutch (C
2
)
Slip or shudder (O/D)
1. O/D brake (B
0
)
No engine braking (1st
∼
3rd: D position)
1. 2nd brake (B
2
)
No engine braking (1st: L position)
1. 1st and reverse brake (B
3
)
No engine braking (2nd: 2 position)
1. 2nd coast brake (B
1
)
Poor acceleration (All position)
1. Torque converter clutch
2. O/D planetary gear
Poor acceleration (O/D)
1. O/D direct clutch (C
0
)
2. O/D planetary gear
Large shift shock or engine stalls when starting off or stopping
1. Torque converter clutch
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