Test B: Rap Relay 1

WARNING: This page is about a different car, the 1989 Cadillac Allante. However, it is still accessible from the selected car via links, so may be relevant.

TEST B: RAP RELAY 1

Condition

Connect Between

⁽¹⁾ Correct Result

Connect Test Lamp At RAP Relay 1, Disconnected

5 (RED/YEL) & Ground

⁽²⁾ Test Lamp Lights

Connect Test Lamp At RAP Relay 1, Disconnected

4 (YEL/BLK) & Ground

⁽³⁾ Test Lamp Lights

⁽¹⁾	If results are correct, go to TEST B: RAP RELAY 1 TABLE 2

⁽²⁾	If result is incorrect, check RED/YEL (840) wire. See WIRING DIAGRAMS .

⁽³⁾	If result is incorrect, check YEL/BLK (660) wire. See WIRING DIAGRAMS .

TEST B: RAP RELAY 1

Condition

Connect Between

Correct Result

⁽¹⁾ BCM Display

Connect Test Lamp At RAP Relay 1, Disconnected & Select BCM Output BO03

5 (RED/YEL) & 2 (BLK/WHT)

Test Lamp Lights

⁽²⁾ LO

Connect Test Lamp At RAP Relay 1, Disconnected & Select BCM Output BO03

5 (RED/YEL) & 2 (BLK/WHT)

Test Lamp Does Not Light

⁽²⁾ HI

⁽¹⁾	If the BCM display does not cycle from LO to HI, replace the BCM.

⁽²⁾	If test lamp lights as indicated, check RED/WHT (76) wires for an open or short to ground. See WIRING DIAGRAMS . If OK, replace RAP relay 1. If test lamp does not light as indicated, check/repair BLK/WHT (707) wire for an open or short to ground. See WIRING DIAGRAMS .