
DIAGNOSTICS - ELECTRONIC CONTROLLED AUTOMATIC 05-561
TRANSAXLE [ECT]
0527M-55
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 charts on the following pages and proceed
to the page given for troubleshooting.
The Matrix Chart is divided into 3 chapters.
S If the instruction "Proceed to next circuit inspection shown on matrix chart" is given in the flow chart
of each circuit, proceed to the circuit with the next highest number in the table to continue the check.
S 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
HINT:
*1: When the circuit on which mark *1 is attached is a malfunction, DTC could be output (See page 05-533 ).
Symptom Suspect Area See page
1. Shift solenoid valve (SL1) circuit *1 05-590
2. Shift solenoid valve (SL2) circuit *1 05-615
No down-shift
3. Shift solenoid valve (SL3) circuit *1 05-622
(A particular gear, from 1st to 4th gear, is not down-shifted)
4. Shift solenoid valve (SR) circuit *1 05-610
5. ECM 01-37
1. Transmission control switch circuit *1 05-566
No down-shift (5th 4th) 2. Shift solenoid valve (S4) circuit *1 05-606
3. ECM 01-37
1. Shift solenoid valve (SL1) circuit *1 05-590
No up-shift
2. Shift solenoid valve (SL2) circuit *1 05-615
(A particular gear, from 1st to 4th gear, is not up-shifted)
3. ECM 01-37
1. Transmission control switch circuit *1 05-566
No up-shift (4th 5th) 2. Shift solenoid valve (S4) circuit *1 05-606
3. ECM 01-37
1. Shift solenoid valve (DSL) circuit *1 05-585
2. Stop light switch circuit *1 05-582
No lock-up
3. Engine coolant temp. sensor circuit *1 05-43
4. ECM 01-37
1. Shift solenoid valve (DSL) circuit *1 05-585
No lock-up off
2. ECM 01-37
1. Throttle position sensor circuit *1 05-43
Shift point too high or too low 2. Shift solenoid valve (SLT) circuit *1 05-626
3. ECM 01-37
1. Transmission control switch circuit *1 05-566
Up-shift to 5th from 4th while shift lever is 4 position
2. ECM 01-37
1. Engine coolant temp. sensor circuit *1 05-43
Up-shift to 5th from 4th while engine is cold
2. ECM 01-37
1. Transmission control switch circuit *1 05-566
Up-shift to 2nd from 1st while shift lever is L position
2. ECM 01-37
1. Shift solenoid valve (SL1) circuit *1 05-590
Harsh engagement (N D)
2. ECM 01-37
1. Shift solenoid valve (SL2) circuit *1 05-615
Harsh engagement (Lock-up)
2. ECM 01-37
1. Shift solenoid valve (SLT) circuit *1 05-626
Harsh engagement (Any driving position)
2. ECM 01-37
1. Shift solenoid valve (SLT) circuit *1 05-626
Poor acceleration
2. ECM 01-37
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 744
05-562 DIAGNOSTICS - ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT]
No kick-down ECM 01-37
1. Shift solenoid valve (DSL) circuit *1 05-585
Engine stalls when starting off or stopping
2. ECM 01-37
1. Park/neutral position switch circuit *1 05-566
Malfunction in shifting 2. Transmission control switch circuit *3 05-566
3. ECM 01-37
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 745
DIAGNOSTICS - ELECTRONIC CONTROLLED AUTOMATIC 05-563
TRANSAXLE [ECT]
2. Chapter 2: On-Vehicle Repair
(L: U151E, U151F AUTOMATIC TRANSAXLE Repair Manual Pub. No. RM1021U)
Symptom Suspect Area See page
Vehicle does not move in any forward position and reverse posi- 1. Valve body assy 40-25
tions 2. Off-vehicle repair matrix chart -
1. Valve body assy 40-25
Vehicle does not move in R position
2. Off-vehicle repair matrix chart -
1. Valve body assy 40-25
No up-shift (1st 2nd)
2. Off-vehicle repair matrix chart -
1. Valve body assy 40-25
No up-shift (2nd 3rd)
2. Off-vehicle repair matrix chart -
1. Valve body assy 40-25
No up-shift (3rd 4th)
2. Off-vehicle repair matrix chart -
1. Valve body assy 40-25
No up-shift (4th 5th)
2. Off-vehicle repair matrix chart -
1. Valve body assy 40-25
No down-shift (5th 4th)
2. Off-vehicle repair matrix chart -
1. Valve body assy 40-25
No down-shift (4th 3rd)
2. Off-vehicle repair matrix chart -
1. Valve body assy 40-25
No down-shift (3rd 2nd)
2. Off-vehicle repair matrix chart -
1. Valve body assy 40-25
No down-shift (2nd 1st)
2. Off-vehicle repair matrix chart -
1. Valve body assy 40-25
No lock-up or No lock-up off
2. Off-vehicle repair matrix chart -
1. Valve body assy 40-25
Harsh engagement (N D) 2. C1 accumulator L
3. Off-vehicle repair matrix chart -
1. Valve body assy 40-25
Harsh engagement (Lock-up)
2. Off-vehicle repair matrix chart -
1. Valve body assy 40-25
Harsh engagement (N R) 2. C2 accumulator L
3. Off-vehicle repair matrix chart -
Harsh engagement (1st 2nd 3rd 4th 5th) Valve body assy 40-25
1. Valve body assy 40-25
Harsh engagement (1st 2nd)
2. Off-vehicle repair matrix chart -
1. Valve body assy 40-25
Harsh engagement (2nd 3rd) 2. C0 accumulator L
3. Off-vehicle repair matrix chart -
1. Valve body assy 40-25
Harsh engagement (3rd 4th)
2. Off-vehicle repair matrix chart -
1. Valve body assy 40-25
Harsh engagement (4th 5th) 2. C3 accumulator L
3. Off-vehicle repair matrix chart -
1. Valve body assy 40-25
Harsh engagement (5th 4th) 2. B3 accumulator L
3. Off-vehicle repair matrix chart -
1. Valve body assy 40-25
Slip or shudder (Forward and reverse) 2. Oil strainer 40-25
3. Off-vehicle repair matrix chart -
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 746
05-564 DIAGNOSTICS - ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT]
1. Valve body assy 40-25
No engine braking (1st: L position)
2. Off-vehicle repair matrix chart -
1. Valve body assy 40-25
No engine braking (2nd: 2 position)
2. Off-vehicle repair matrix chart -
No kick-down Valve body assy 40-25
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 747
DIAGNOSTICS - ELECTRONIC CONTROLLED AUTOMATIC 05-565
TRANSAXLE [ECT]
3. Chapter 3: Off-Vehicle Repair
(L: U151E, U151F AUTOMATIC TRANSAXLE Repair Manual Pub. No. RM1021U)
Symptom Suspect Area See page
Vehicle does not move in any forward position and reverse posi- 1. U/D brake (B3) L
tions 2. Torque converter clutch 40-18
1. Reverse clutch (C2) L
Vehicle does not move in R position
2. 1st & reverse brake (B2) L
No up-shift (1st 2nd) 2nd & O/D brake (B1) L
No up-shift (2nd 3rd) Direct and O/D clutch (C0) L
No up-shift (3rd 4th) 2nd & O/D brake (B1) L
No up-shift (4th 5th) U/D clutch (C3) L
No lock-up or No lock-up off Torque converter clutch 40-18
1. Forward clutch (C1) L
Harsh engagement (N D) 2. One-way clutch No.1 (F1) L
3. U/D one-way clutch (F2) L
1. Reverse clutch (C2) L
Harsh engagement (N R)
2. 1st & reverse brake (B2) L
Harsh engagement (1 2) 2nd & O/D brake (B1) L
Harsh engagement (2 3) Direct and O/D clutch (C0) L
Harsh engagement (3 4) 2nd & O/D brake (B1) L
Harsh engagement (4 5th) U/D clutch (C3) L
Harsh engagement (Lock-up) Torque converter clutch 40-18
1. Direct and O/D clutch (C0) L
2. Forward clutch (C1) L
3. U/D clutch (C3) L
4. 2nd & O/D brake (B1) L
Slip or shudder (Forward and reverse: After warm-up)
5. U/D brake (B3) L
6. One-way clutch No.1 (F1) L
7. U/D one-way clutch (F2) L
8. Torque converter clutch 40-18
Slip or shudder (Particular position: Just after engine starts) Torque converter clutch 40-18
1. Reverse clutch (C2) L
Slip or shudder (R position)
2. 1st & reverse brake (B2) L
1. Forward clutch (C1)
L
Slip or shudder (1st) 2. One-way clutch No.1 (F1)
L
3. U/D one-way clutch (F2)
Slip or shudder (2nd) 2nd & O/D brake (B1) L
Slip or shudder (3rd) Direct and O/D clutch (C0) L
Slip or shudder (4th) 2nd & O/D brake (B1) L
Slip or shudder (5th) U/D clutch (C3) L
No engine braking (1st - 4th: D position) U/D brake (B3) L
No engine braking (1st: L position) 1st & reverse brake (B2) L
No engine braking (2nd: 2 position) 2nd & O/D brake (B1) L
No engine braking (3rd: 3 position) U/D brake (B3) L
Poor acceleration (All positions) Torque converter clutch 40-18
1. U/D clutch (C3) L
Poor acceleration (5th)
2. U/D planetary gear unit L
Engine stalls when starting off or stopping Torque converter clutch 40-18
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 748