Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 773 (CRUISE CONTROL SYSTEM - DIAGNOSIS)CIRCUIT INSPECTIONCRUISE CONTROL SWITCH CIRCUITINSPECTION PROCEDURE

2004 Toyota Matrix XR, FWD, Standard

Inspection Procedure

2004 Toyota Matrix XR, FWD, StandardSECTION Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.

Check voltage between terminals CCS of ECM connector and body ground.
PREPARATION:
1. Remove the ECM with connector still connected.
2. Turn ignition switch ON.
  CHECK:
  
  Measure voltage between terminals CCS of ECM connector and body ground, when each of the SET/COAST, RESUME/ACCEL and CANCEL is turned ON.
  
  Fig 1: Measuring Voltage Between Terminals CCS Of ECM Connector & Body Ground
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  OK:
  
  Fig 2: Switch Position Voltage Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: Proceed to next circuit inspection shown in problem symptoms table (See PROBLEM SYMPTOMS TABLE ).
2. OK: Go to next step.
Check control switch continuity.
PREPARATION:
1. Remove steering wheel center pad.
2. Disconnect the control switch connector.
  CHECK:
  
  Measure resistance between terminals 4 and 5 of control switch connector when control switch is operated.
  
  Fig 3: Measuring Resistance Between Terminals 4 & 5
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  OK:
  
  Fig 4: Switch Position Voltage Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: Replace control switch.
2. OK: Go to next step.
Check main switch continuity.
PREPARATION:

Disconnect the control switch connector.

CHECK:

Check continuity between terminals 4 and 5 of control switch connector when main switch is held ON and OFF.

Fig 5: Checking Continuity Between Terminals 4 & 5
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK:

Fig 6: Main Switch Position & Continuity Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: Replace control switch.
2. OK: Go to next step.
Check harness and connector between ECM and cruise control switch, cruise control switch and body ground (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).
1. NG: Repair or replace harness or connector.
2. OK: Go to next step.
Check cruise control indicator light (See combination meter).
1. NG: Replace combination meter.
2. OK: Check and replace ECM (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).

RENDER: 1.0x

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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.