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Home >> Suzuki >> 2007 >> XL7 Limited, AWD >> Repair and Diagnosis >> Body & Frame >> Glass/Windows/Mirrors >> Diagnostic Information and Procedures >> Mirrors - Temperature Displays SC or OC >> Circuit/System Testing
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Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the ambient air temperature sensor.
  2. Test for less than 1.0 Ω of resistance between the low reference circuit and ground.
    • If greater than 1.0 Ω, test the low reference circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the inside rearview mirror.
  3. Ignition ON, test for 4.8 - 5.2 volts between the 5-volt reference circuit and ground.
    • If less than 4.8 volts, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the inside rearview mirror.
    • If greater than 5.2 volts, tests the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the inside rearview mirror.
  4. Install a 3-amp fused jumper wire between the signal circuit and the 5-volt reference circuit. Verify the temperature display is greater than 60°C or 140°F.
    • If less than 60°C or 140°F, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the inside rearview mirror.
  5. If all circuits test normal, test or replace the ambient air temperature sensor.
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