Diagnostic Aids
WARNING: This page is about a different car, the 2001 GMC Safari and 2001 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.
If only history DTC B1477 is set, problem may be intermittent. Try to recreate fault by wiggling wiring and connectors while performing test.
IDENTIFYING RETAINED ACCESSORY POWER RELAY TERMINAL CIRCUITS
| Terminal No. | Wire Color | Function |
|---|---|---|
| 1 | Black | Rap Relay Coil Control |
| 2 | Red | Battery Positive Voltage |
| 3 | Brown | Accessory Voltage |
| 4 | Dark Blue | Rap Relay Switch Supply Voltage |
| 5 | Red | Battery Positive Voltage |