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.

2002 Toyota MR2 C56FACTORY OEM SERVICE PROCEDURE

Ignition Relay (No.2): Inspection

Remove Ignition Relay (Marking: IG2)

Fig 1: Removing Ignition Relay
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Inspect Ignition Relay
1. Inspect the relay continuity.
  1. Using an ohmmeter, check that there is continuity between terminals 1 and 2.
    If there is no continuity, replace the relay.
  2. Check that there is no continuity between terminals 3 and 5.
    If there is continuity, replace the relay.
    
    Fig 2: Checking IG2 Relay Resistance
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Inspect the relay operation.
  1. Apply battery positive voltage to terminals 1 and 2.
  2. Using an ohmmeter, check that there is continuity between terminals 3 and 5.
    If there is no continuity, replace the relay.
Reinstall Ignition Relay

Fig 3: Checking IG2 Relay Operation (Voltage Applied)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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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.