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Problem Symptoms Table

WARNING: This page is about a different variant/trim than selected.

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 2 chapters.

  1. Chapter 1: Electronic Circuit Matrix Chart 
    • 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 chart" is given in the flow chart i 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.

      HINT:

      *1: When the circuit on which mark *1 is attached is a malfunction, DTC could be output (see DIAGNOSTIC TROUBLE CODE CHART ).

      PROBLEM SYMPTOMS TABLE - AUTOMATIC TRANSMISSION (ELECTRONIC CIRCUITS)

      Symptom Suspect Area
      No up-shift (1st- 2nd) ECM
      No up-shift (2nd - 3rd) ECM
      No up-shift (3rd - O/D)
      1. Transmission control switch (O/D OFF) circuit
      2. ECM
      No down-shift (O/D - 3rd) ECM
      No down-shift (3rd - 2nd) ECM
      No down-shift (2nd - 1st) ECM
      No lock-up or 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)
      1. Transmission control switch (O/D OFF) circuit
      2. ECM
      Up-shift to O/D from 3rd while engine is cold
      1. Engine coolant temp, sensor circuit(1)
      2. ECM
      Harsh engagement (N - D) ECM
      Harsh engagement (Lock-up) ECM
      Harsh engagement (Any driving position) ECM
      Poor acceleration ECM
      Engine stalls when starting off or stopping ECM
      Malfunction in shifting
      1. Park/neutral position switch circuit(1)
      2. ECM
      (1) When the circuit on which mark *1 is attached is a malfunction, DTC could be output
  2. Chapter 2: On-Vehicle Repair and Off-Vehicle Repair (*: U140F AUTOMATIC TRANSAXLE Repair Manual Pub. No. RM836U U241E AUTOMATIC TRANSAXLE Repair Manual Pub. No. RM840U) 
    Fig 1: Problem Symptoms Table (1 Of 2)
    G02908743Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 2: Problem Symptoms Table (2 Of 2)
    G02908744Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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