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.
Switch Monitor Test: VOM
1) Ground STI connector. Connect VOM positive lead to SML terminal on self-test connector. Connect negative lead to ground. See Figure .
2) Operate each switch listed in SWITCH MONITOR TEST table. Note output on VOM as each switch is operated. Go to specified PINPOINT TEST if any switch does not meet specification.
| Switch | VOM Indication/Condition | (1) Pinpoint Test | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A/C Switch | Less Than 1.5 Volts; A/C & Blower Switch On | STG | ||||||||||
| Blower Motor Switch | Less Than 1.5 Volts; Switch Set To "2" Or Higher | (2) STG | ||||||||||
| Brake On/Off Switch | Less Than 1.5 Volts; Brake Pedal Partially Pressed | STP | ||||||||||
| Clutch Engage/Neutral Gear Switch (3) | Less Than 1.5 Volts; In Gear, Clutch Released | STG | ||||||||||
| Coolant Temperature Switch | Less Than 1.5 Volts; Cooling Fan On | (2) STP | ||||||||||
| Cooling Fan Relay | Less Than 1.5 Volts; Accelerator Pedal Pressed (4) | ROC | ||||||||||
| Defrost Switch | Less Than 1.5 Volts; Defrost Switch On | STP | ||||||||||
| Headlight Switch | Less Than 1.5 Volts; Headlight Switch On | STP | ||||||||||
| Idle Switch | Less Than 1.5 Volts; Accelerator Pedal Pressed | (2) STG | ||||||||||
| Manual Lever Position Switch | Less Than 1.5 Volts; Transaxle In Park Or Neutral | STP | ||||||||||
| Wide Open Throttle Switch (5) | Less Than 1.5 Volts; Accelerator Pedal Fully Pressed | STG | ||||||||||
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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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