Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.

Ignition OFF, transmission in Park. Disconnect the automatic transmission shift lever electrical connector.
Ignition OFF, test for less than 1 Ω between terminal 2 on the automatic transmission shift lever vehicle harness connector and ground at the battery negative post.
- If 1 Ω or greater
1. Ignition OFF.
2. Test for less than 1 Ω in the ground circuit wire from both ends of the wire.
  - If 1 Ω or greater, repair the open/high resistance in the wire circuit.
  - If less than 1 Ω, repair the open/high resistance in the ground connection or the terminal connection at the automatic transmission shift lever.
- If less than 1 Ω
Ignition ON, test for greater than 11 volts on the signal circuit terminal 1 on the automatic transmission shift lever vehicle harness connector and ground at the battery negative post.
- If less than 11 volts
1. Ignition OFF.
2. Test for less than 1 Ω in the signal circuit wire from both ends of the wire.
  - If 1 Ω or greater, repair the open/high resistance in the signal circuit wire.
  - If less than 1 Ω, repair the open/high resistance in either terminals on the signal circuit wire.
- If greater than 11 volts
Ignition OFF, test for less than 3 ohms between terminal 1 and terminal 2 on the automatic transmission shift lever component harness connector while depressing the Tow/Haul switch button.
- If greater than 3 Ω
  Replace the automatic transmission shift lever assembly.
- If less 3 Ω
If all circuits test normal, replace the BCM.