Component Testing

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.

Relay Test

Ignition OFF, disconnect the appropriate relay.
Test for 70-150 Ω between terminals (85 or 1) and (86 or 2).
- If less than 70 or greater than 150 Ω
  Replace the relay.
- If between 70-150 Ω
Test for infinite resistance between the terminals listed below:
- (30 or 3) and (86 or 2)
- (30 or 3) and (87 or 5)
- (30 or 3) and (85 or 1)
- (85 or 1) and (87 or 5)
- (86 or 2) and (87 or 5)
- If less than infinite resistance
  Replace the relay.
- If infinite resistance
Install a 3 A fused jumper wire between relay terminal (85 or 1) and 12 V. Install a jumper wire between relay terminal (86 or 2) and ground.
Test for less than 5.0 Ω between terminals (30 or 3) and (87 or 5).
- If 5.0 Ω or greater
  Replace the relay.
- If less than 5.0 Ω
All OK