2005 Toyota Matrix XR, FWD, StandardFACTORY OEM SERVICE PROCEDURE

Problem Symptoms Table

If a normal code is displayed during the DTC check but the problem still occurs, check the circuits for each problem, symptom in the order given in the table below and proceed to the relevant troubleshooting step.

PROBLEM SYMPTOMS TABLE - CRUISE CONTROL SYSTEM (W/O ETCS)

Symptom Suspect Area
SET not occurring or CANCEL occurring. (DTC is Normal)
  1. Cruise control main switch circuit (Cruise control switch)
  2. Vehicle speed sensor circuit
  3. Stop lamp switch circuit
  4. Park/neutral position switch circuit (A/T) Clutch switch circuit (M/T)
  5. Actuator motor circuit
  6. Cruise control cable
  7. Cruise control ECU assy
SET not occurring or CANCEL occurring. (DTC dose not output)
  1. ECU power source circuit
  2. Cruise control ECU assy
Actual vehicle speed deviates above or below the set speed.
  1. Cruise control cable
  2. Vehicle speed signal abnormal
  3. Electronically controlled transmission communication circuit (A/T)
  4. Actuator motor circuit
  5. Idle signal circuit (Main throttle position sensor)
  6. Cruise control ECU assy
A/T:
Gear shifting frequent between 3rd and O/D when driving on uphill road. (Hurting)
  1. Electronically controlled transmission communication circuit
  2. Cruise control ECU assy
Cruise control not cancelled, even when brake pedal is depressed.
  1. Cruise control cable
  2. Stop lamp switch circuit
  3. Actuator motor circuit
  4. Cruise control ECU assy
A/T:
Cruise control not cancelled, even when transmission is shifted to "N" position.
  1. Cruise control cable
  2. Park/neutral position switch circuit
  3. Actuator motor circuit
  4. Cruise control ECU assy
Control switch does not operate. (SET/COAST, ACC/RES, CANCEL not possible)
  1. Cruise control cable
  2. Actuator motor circuit
  3. Cruise control ECU assy
SET possible at 40 km/h (25 mph) or less, or CANCEL does not operate at 40 km/h (25 mph) or less.
  1. Cruise control cable
  2. Vehicle speed signal abnormal
  3. Actuator motor circuit
  4. Cruise control ECU assy
Poor response is ACCEL and RESUME modes.
  1. Cruise control cable
  2. Electronically controlled transmission communication circuit (A/T)
  3. Actuator motor circuit
  4. Cruise control ECU assy
A/T:
O/D does not RESUME, even though the road is not uphill.
  1. Electronically controlled transmission communication circuit
  2. Cruise control ECU assy
DTC memory is erased.
  1. Cruise control ECU assy
DTC is not output, or is output when it should not be.
  1. Diagnosis circuit
  2. Cruise control ECU assy
Cruise main indicator light remains ON or falls to light up.
  1. Cruise main indicator light circuit
  2. Cruise control ECU assy
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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.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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