Trouble Shooting: Pre-Check

2004 Toyota Matrix XR, FWD, StandardSECTION Pre-Check
WARNING: This page is about a different car, the 2002 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.
  1. Diagnosis System  :
      NOTE: If the indicator check result is not normal, proceed to troubleshooting for the combination meter section. See BODY ELECTRICAL- TROUBLESHOOTING PROBLEM SYMPTOMS TABLE.
    1. Check the indicator.
      1. Turn the ignition switch ON.
      2. Check that the CRUISE main indicator light, see Figure, comes ON when the cruise control main switch, see Figure, is turned ON, and that the indicator light goes off when the main switch is turned OFF.
    2. NOTE: If a malfunction occurs in the speed sensor or actuator, etc. during cruise control driving, the ECU actuates AUTO CANCEL of the cruise control and turns on and off the CRUISE MAIN indicator light to inform the driver of a malfunction. At the same time, the malfunction is stored in memory as a DTC.
    3. Check The DTC  , See Fig 3:
    4. Output a DTC using diagnosis check wire:
      1. Turn the ignition switch ON.
      2. NOTE:

        If The DTC is not output, inspect the diagnosis circuit.

        As an example, the blinking patterns for codes; normal and 52 are shown in the illustration. See Figure.

      3. Using SST, connect terminals Tc and CG of the DLC3. See Fig 4. SST 09843-18020
      4. Read the DTC on the CRUISE MAIN indicator light. See Figure.
  2. ECM Terminal Values Measurement By Using Toyota Break-Out-Box And Toyota Hand-Held Tester  :
    1. Connect the break-out-box and TOYOTA hand-held tester to the vehicle. See Fig 5.
    2. Read the ECM input/output values by following the prompts on the tester screen.
    3. Please refer to the TOYOTA hand-held tester which has a "Snapshot" function. This records the measured data and is effective in the diagnosis of intermittent problems.
  3. Monitor ECM Data By Using Toyota Hand-Held Tester  :
    1. Connect the TOYOTA hand-held tester to the DLC3. See Fig 6.
    2. NOTE:

      NOTE:  TOYOTA hand-held tester has a "Snapshot" function which records the monitored data.

      Please refer to the TOYOTA hand-held tester operator's manual for further details.

    3. Monitor the ECM data by following the prompts on the tester screen.
  4. Clearing DTC  :
    1. The following actions will erase the DTCs and freeze-frame data.
      1. Operating the OBD II scan tool (complying with SAEJ1978) or TOYOTA hand-held tester to erase the codes. (See the OBD II scan tool's instruction book for operating instructions).
      2. Disconnecting the battery terminals or EFI fuse.
    2. After completing repairs, the DTC retained, in memory can be cleared by removing the ECU-B fuse for 10 seconds or more with the ignition switch OFF.
    3. Check that the normal code is displayed after connecting the fuse.
  5. Problem Symptom Confirmation (Road Test)  :
    1. Inspect the SET switch, see Figure:
      1. Push the main switch ON. See Figure.
      2. Drive at a desired speed (25 mph (40 km/h). or higher).
      3. Press the control switch to the SET/COAST. See Figure.
      4. After releasing the switch, check that the vehicle cruises at the desired speed.
    2. Inspect the ACC (Acceleration) switch:
      1. Push the main switch ON. See Figure.
      2. Drive at a desired speed (25 mph (40 km/h) or higher).
      3. Check that the vehicle speed increases while the control switch is turned to RES/ACC, seeFigure and that the vehicle cruises at the set speed when the switch is released.
      4. Momentarily press the control switch upward for RES/ACC, seeFigure and then immediately release it. Check that the vehicle speed increases by about 1.5 Km/h (Tap-up function).
    3. Inspect the COAST switch:
      1. Push the main switch ON. See Figure.
      2. Drive at a desired speed 25 mph (40 km/h) or higher.
      3. Check that the vehicle speed decreases while the control switch is turned to SET/COAST, and the vehicle cruises at the set speed when the switch is released. See Figure.
      4. Momentarily push the control switch downward for the SET/COAST, and then immediately release it. Check that the vehicle speed decreases by about 1.5 km/h (Tap-down function).
    4. Inspect the CANCEL switch:
      1. Push the main switch ON. See Figure.
      2. Drive at a desired speed 25 mph (40 km/h) or higher.
      3. When operating one of the followings, check that the cruise control system is cancelled and that the normal driving mode is reset

        Depress the brake pedal.

        Shift to except D position.

        Push the main switch OFF.

        Pull the cruise control switch for CANCEL. See Figure.

    5. Inspect the RES (resume) switch:
      1. Push the main switch ON. See Figure.
      2. Drive at a desired speed 25 mph (40 km/h) or higher
      3. When operating one of the following, check that the cruise control system is cancelled and that the normal driving mode is reset:

        Depress the brake pedal.

        Shift to except "D" position.

        Pull the cruise control switch to CANCEL. See Figure.

      4. After the control switch is turned to RES/ACC, see Figure, at the driving speed of more than 40 km/h (25 mph), check that the vehicle restores the speed prior to the cancellation.
  6. Input Signal Check  : INPUT SIGNAL CHECK BY USING TOYOTA A HELD TESTER

    (a)  Connect the TOYOTA hand-held tester to the DLC3.

    (b)  Check the control switch (CRUISE ON-OFF, CANCEL, SET/COAST, RES/ACC).

Problem Symptoms Table

Symptom Suspect Area See
SET not occurring or CANCEL occurring. (DTC is Normal)
..... Input Signal Circuit (1)
..... Vehicle Speed Sensor Circuit (2)
..... Stop Light Switch Circuit (3)
..... Park/Neutral Position Switch Circuit (4)
..... ECM (5)
SET not occurring or CANCEL occurring. (DTC is not output)
..... ECM (5)
Actual Vehicle Speed Deviates Above Or Below The Set Speed.
..... Input Signal Circuit (1)
..... ECM (5)
Gear shifting occurs frequently between 3rd & O/D when driving on uphill road. (Hunting).
..... ECM (5)
Cruise Control Not Cancelled, Even When Brake Pedal Is Depressed.
..... Stop Light Switch Circuit (3)
..... ECM (5)
Cruise control not cancelled, even when transmission is shifted to "N" position.
..... Park/Neutral Position Switch Circuit (4)
..... ECM (5)
Cruise Control Not Cancelled, Even When Clutch Pedal Is Depressed.
..... ECM (5)
Control switch does not operate. (SET/COAST, ACC/RES, CANCEL not possible)
..... Cruise Control Switch Circuit (6)
..... ECM (5)
SET possible at 25 mph or less, or CANCEL does not operate at 25 mph or less.
..... Input Signal Circuit (1)
..... ECM (5)
Poor response is ACC and RES modes.
..... ECM (5)
O/D does not resume, even though the road is not uphill.
..... ECM (5)
DTC memory is erased.
..... ECM (5)
DTC is not output, or is output when should not be
..... Diagnosis Circuit (7)
..... ECM (5)
Cruise MAIN indicator light remains ON or falls to lighting up
..... Input Signal Circuit (1)
..... ECM (5)
(1) DTC 1566/54: INPUT SIGNAL CIRCUIT 
(2) DTC P0500/21,23: VEHICLE SPEED SENSOR CIRCUIT 
(3) DTC P1520/52 : STOP LIGHT SWITCH CIRCUIT 
(4) See DTC P1780 in appropriate ENGINE PERFORMANCE article.
(5) See HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS under INTRODUCTION.
(6) DTC P1565/32 CONTROL SWITCH CIRCUIT (CRUISE CONTROL SWITCH) 
(7) Manufacture did not define this procedure.
Fig 1: Customer Problem Analysis (Cruise Control System Check List)
G00203267Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
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