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.
Glow Plug System
When ignition switch is in the "ON" position, glow indicator lamp comes on for 3 seconds, then goes off. Glow plug relay No. 1 comes on for about 6 seconds, then goes off. Glow plug relay No. 2 comes on if temperature of coolant is 86°F (30°C) or less.
When ignition switch is turned to "START" position, glow plug relay No. 1 cycles on and off. Glow plug relay No. 2 is kept on during the time the switch is in "START" position.
With normal afterglow function, No. 2 glow plug relay will turn off when coolant temperature exceeds 86°F (30°C) or when vehicle speed switch is closed. Also, at above 6 volts of glow plug voltage, No. 2 relay shuts off.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.