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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1935 (Wiring Systems And Power Management - Service, Troubleshooting & Diagnosis) >> Power Mode Mismatch >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

Ignition Switch 

  1. Ignition OFF, disconnect the harness connector at the ignition switch.
  2. Using the Resistance Test table below, check the resistance between the terminals of the ignition switch listed in each switch position.
Resistance Test

Ignition Switch Position Terminals 3 and 1 Terminals 3 and 2 Terminals 3 and 5 Terminals 3 and 4 Terminals 5 and 4
Off Key Out Infinite Infinite Infinite Infinite Infinite
Off Key IN Infinite Infinite < 5.0 Ω Infinite Infinite
Accessory Infinite < 5.0 Ω Infinite Infinite Infinite
Run < 5.0 Ω < 5.0 Ω Infinite Infinite < 5.0 Ω
Start < 5.0 Ω Infinite Infinite Infinite 1275-1325 Ω