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                                                                                                                               DI-163
                                                         DIAGNOSTICS   -   AUTOMATIC TRANSAXLE
                                                                                                                                   DI6UQ-01


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 trouble-
shooting.
The Matrix Chart is divided into 3 chapters.
Chapter 1: Electronic circuit matrix chart
Chapter 2: On-vehicle repair matrix chart
Chapter 3: Off-vehicle repair matrix chart
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 page
No up-shift
                                                                   ECM                                                         -
(A particular gear, from 1st to 3rd gear, is not up-shifted)

No up-shift                                                        2. O/D main switch and O/D OFF indicator light circuit   DI-196
(3rd  O/D)                                                         3. ECM                                                      -

No down-shift
                                                                   ECM                                                         -
(A particular gear, from 1st to 3rd gear, is not down-shifted)

No down-shift                                                      1. O/D main switch and O/D OFF indicator light circuit   DI-196
(O/D  3rd)                                                         2. ECM                                                      -
No lock-up                                                         ECM                                                         -
No lock-up OFF                                                     ECM                                                         -
Shift point too high or too low                                    ECM                                                         -
Up-shift to O/D from 3rd while O/D main switch is OFF              ECM                                                         -
Up-shift to O/D from 3rd while engine is cold                      ECM                                                         -
No kick-down                                                       ECM                                                         -
Engine stalls when starting off or stopping                        ECM                                                         -




 2002 ECHO (RM884U)

                                                                                   Author :                    Date :              333
DI-164
                                                     DIAGNOSTICS       -   AUTOMATIC TRANSAXLE

Chapter 2: On-vehicle Repair
(L: U340E, U341E AUTOMATIC TRANSAXLE Repair Manual Pub. No. RM735U)
                            Symptom                                                        Suspect Area            See page
                                                                  1.   Manual valve                                   L
Vehicle does not move in any forward position and reverse posi-   2.   Primary regulator valve                        L
tion                                                              3.   Secondary regulator valve                      L
                                                                  4.   Off-vehicle repair matrix chart                -

                                                                  1. Manual valve                                     L
Vehicle does not move in R position
                                                                  2. Off-vehicle repair matrix chart                  -

                                                                  1. 1-2 shift valve                                  L
No up-shift (1st  2nd)
                                                                  2. Off-vehicle repair matrix chart                  -
                                                                  1. 2-3 shift valve                                  L
No up-shift (2nd  3rd)
                                                                  2. Off-vehicle repair matrix chart                  -

                                                                  1. 3-4 shift valve                                  L
No up-shift (3rd  O/D)
                                                                  2. Off-vehicle repair matrix chart                  -

No down-shift (O/D  3rd)                                          3-4 shift valve                                     L
No down-shift (3rd  2nd)                                          2-3 shift valve                                     L
No down-shift (2nd  1st)                                          1-2 shift valve                                     L
                                                                  1.   Lock-up relay valve                            L
                                                                  2.   Lock-up control valve                          L
No lock-up or No lock-up off                                      3.   Solenoid relay valve                           L
                                                                  4.   Solenoid modulator valve                       L
                                                                  5.   Off-vehicle repair matrix chart                -
                                                                  1. C1 accumulator                                   L
Harsh engagement (N  D)                                           2. Accumulator control valve                        L
                                                                  3. Off-vehicle repair matrix chart                  -
                                                                  1.   C3 accumulator                                 L
                                                                  2.   Accumulator control valve                      L
Harsh engagement (N  R)
                                                                  3.   Reverse control valve                          L
                                                                  4.   Off-vehicle repair matrix chart                -
                                                                  1.   Lock-up relay valve                            L
                                                                  2.   Accumulator control valve                      L
Harsh engagement (Lock-up)
                                                                  3.   Lock-up control valve                          L
                                                                  4.   Off-vehicle repair matrix chart                -

                                                                  1. B2 accumulator                                   L
Harsh engagement (1st  2nd)
                                                                  2. Accumulator control valve                        L

                                                                  1. C2 accumulator                                   L
Harsh engagement (2nd  3rd)
                                                                  2. Accumulator control valve                        L

                                                                  1. B1 accumulator                                   L
Harsh engagement (3rd  O/D)                                       2. Accumulator control valve                        L
                                                                  3. 3-4 shift timing valve                           L
                                                                  1. 4-3 shift timing valve                           L
Harsh engagement (O/D  3)
                                                                  2. 4-3 shift timing valve                           L

Harsh engagement (D, 2, L position)                               Coat relay valve                                    L
                                                                  1. Oil strainer                                   AX-9
Slip or shudder (Forward and reverse)
                                                                  2. Off-vehicle repair matrix chart                 -

                                                                  1. Reverse control valve                            L
No engine braking (1st: L position)
                                                                  2. Off-vehicle repair matrix chart                  -
No engine braking (2nd: 2 position)                               3-4 shift valve                                     L




2002 ECHO (RM884U)

                                                                                     Author :             Date :           334
                                                                      DI-165
                     DIAGNOSTICS   -   AUTOMATIC TRANSAXLE


                               1. 1-2 shift valve                     L
No kick-down                   2. 2-3 shift valve                     L
                               3. 3-4 shift valve                     L
Poor acceleration              SLT damper                             L




2002 ECHO (RM884U)

                                               Author :      Date :       335
DI-166
                                                       DIAGNOSTICS      -   AUTOMATIC TRANSAXLE

Chapter 3: Off-vehicle Repair
(L: U340E, U341E AUTOMATIC TRANSAXLE Repair Manual Pub. No. RM735U)
                             Symptom                                                       Suspect Area            See page
                                                                   1.   Planetary gear unit                           L
                                                                   2.   Forward clutch                                L
Vehicle does not move in any forward position and reverse posi-
                                                                   3.   One-way clutch No. 2                          L
tion
                                                                   4.   Reverse Clutch                                L
                                                                   5.   1st and reverse brake                         L
                                                                   1. Planetary gear unit                             L
Vehicle does not move in R position                                2. Reverse Clutch                                  L
                                                                   3. 1st and reverse brake                           L
                                                                   1. 2nd brake                                       L
No up-shift (1st  2nd)
                                                                   2. One-way clutch No. 1                            L
No up-shift (2nd  3rd)                                             Direct clutch                                      L
No up-shift (3rd  O/D)                                             O/D and 2nd brake                                  L
No lock-up or No lock-up off                                       Torque converter clutch                          AX-34
                                                                   1. Forward clutch                                  L
Harsh engagement (N  D)
                                                                   2. One-way clutch No. 2                            L
                                                                   1. Reverse clutch                                  L
Harsh engagement (N  R)
                                                                   2. 1st and reverse brake                           L

Harsh engagement (Lock-up)                                         Torque converter clutch                          AX-34
                                                                   1. 2nd brake                                       L
Harsh engagement (1st  2nd)
                                                                   2. One-way clutch No. 1                            L

Harsh engagement (2nd  3rd)                                        Direct clutch                                      L
Harsh engagement (3rd  O/D)                                        O/D and 2nd brake                                  L
                                                                   1.   Torque converter clutch                     AX-34
                                                                   2.   Forward clutch                                L
                                                                   3.   Direct clutch                                 L
Slip or shudder (Forward position)                                 4.   O/D and 2nd brake                             L
                                                                   5.   2nd brake                                     L
                                                                   6.   One-way clutch No. 1                          L
                                                                   7.   One-way clutch No. 2                          L
                                                                   1. Reverse clutch                                  L
Slip or shudder (Reverse position)
                                                                   2. 1st and reverse brake                           L

Slip or shudder (1st)                                              One-way clutch No. 2                               L
                                                                   1. 2nd brake                                       L
Slip or shudder (2nd)
                                                                   2. One-way clutch No. 1                            L

Slip or shudder (3rd)                                              Direct clutch                                      L
Slip or shudder (O/D)                                              O/D and 2nd brake                                  L
No engine braking (1st: L position)                                1st and reverse brake                              L
No engine braking (2nd: 2 position)                                O/D and 2nd brake                                  L
Poor acceleration (All position)                                   Torque converter clutch                          AX-34
Large shift shock or engine stalls when starting off or stopping   Torque converter clutch                          AX-34




2002 ECHO (RM884U)

                                                                                      Author :            Date :            336



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