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.
2003 Suzuki Aerio L4-2.0LFACTORY OEM SERVICE PROCEDURE
Cruise Control Module: Testing and Inspection
Cruise Control Module and Its Circuit Inspection
CAUTION: Cruise control module can not be checked by itself. It is strictly prohibited to connect voltmeter or ohmmeter to cruise control module with coupler disconnected from it.
Voltage Check
Check for input or output voltage of control module (voltage between each circuit and body ground) with cruise control module connector connected.
Resistance Check
1. Disconnect cruise control module connector from cruise control module with ignition switch OFF.
CAUTION:
- Never touch terminals of cruise control module itself.
- Be sure to turn OFF ignition switch for this check.
- Resistance in the table represents that when parts temperature is 20 °C (68 °F).
2. Check resistance between each pair of terminals of disconnected connectors as shown in the table.
CAUTION: Cruise control module can not be checked by itself. It is strictly prohibited to connect voltmeter or ohmmeter to cruise control module with coupler disconnected from it.
Voltage Check
Check for input or output voltage of control module (voltage between each circuit and body ground) with cruise control module connector connected.
Resistance Check
1. Disconnect cruise control module connector from cruise control module with ignition switch OFF.
CAUTION:
- Never touch terminals of cruise control module itself.
- Be sure to turn OFF ignition switch for this check.
- Resistance in the table represents that when parts temperature is 20 °C (68 °F).
2. Check resistance between each pair of terminals of disconnected connectors as shown in the table.
Factory Service Tools
Use the Manual With the Right Hardware
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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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