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 546 (CRUISE CONTROL SYSTEM - DIAGNOSTICS)CIRCUIT INSPECTIONCRUISE MAIN INDICATOR LIGHT 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 2003 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.

Check voltage between terminal PI and GND of ECM connector.

PREPARATION:

Turn ignition switch ON.

CHECK:

Measure voltage between terminals PI and GND of ECM connector when main switch is held on and off.

OK:

SWITCH VOLTAGE REFERENCE

Switch position	Voltage
OFF	9 - 14 V
ON	0 -3 V

Fig 1: Measuring Voltage Between Terminals PI And GND Of ECM Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : Proceed to next circuit inspection shown on problem symptom table (See PROBLEM SYMPTOMS TABLE ).
NG : Go to Next Step

Check combination meter (See CIRCUIT ).
1. NG : Replace combination meter.
2. OK : Check and replace ECM (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).

RENDER: 1.0x

NO RELATED

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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.