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Component Testing

WARNING: This page is about a different car, the 2008 Pontiac G5 and 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

PNP Switch (MN5 4T45-E)

  1. Ignition OFF, disconnect the harness connector at the PNP switch.
  2. With the PNP switch in the following positions, test for infinite resistance between the ground terminal 1 and the signal terminal 12.
    • R
    • OD
    • D
    • 2
    • 1
    • If not the specified value, replace the PNP switch.
  3. With the PNP switch in the following positions, test for less than 2 ohms between the ground terminal 1 and the signal terminal 12.
    • P
    • N
    • If greater than the specified range, replace the PNP switch.

CRNK Relay

  1. Ignition OFF, disconnect the CRNK relay.
  2. Test for 60-180 ohms between terminals 85 and 86.
    • If not within the specified range, replace the relay.
  3. Test for infinite resistance between the following terminals:
    • 30 and 86
    • 30 and 87
    • 30 and 85
    • 85 and 87
    • If not the specified value, replace the relay.
  4. Install a 20 amp fused jumper wire between relay terminal 85 and 12 volts. Install a jumper wire between relay terminal 86 and ground. Test for less than 2 ohms between terminals 30 and 87.
    • If greater than specified range, replace the relay.
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