Tests For Improper Displays (BI90 Displays LO With Multi-Function Lever In Normal Position)
WARNING: This page is about a different car, the 1988 Cadillac Allante and 1987 Cadillac Allante. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect row A of connector C202.
- If display reads HI, replace the right Turn Switch.
- If display reads LO, go to step 2.
- Disconnect the BCM. Connect a self powered test lamp at BCM connector terminal 1D14.
- If test lamp lights, check/repair BLU/WHT (664) wire for a short to ground.
- If test lamp does not light, check BCM terminal 1D14 for a good, clean connection. If connection is good, replace the BCM.
NOTE:
For circuit identification, see Fig 1.