Circuit Description
The PRIMARY BRAKE indicator illuminates when ground is applied to the primary brake indicator control circuit.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Brake Warning System Schematics | |||
1 | Did you review the Brake Warning System Description and Operation and perform the necessary inspections? | Go to Step 2 | |
2 | Verify a fault is present. Does the system operate normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Is the PRIMARY BRAKE indicator and the low air pressure warning alarm inoperative? | Go to Step 4 | |
4 |
Does the test lamp light? | Go to Step 6 | Go to Step 5 |
5 | Connect a test lamp from the battery positive voltage circuit to a good ground . Does the test lamp light? | Go to Step 8 | Go to Step 9 |
6 | Test the primary brake indicator control circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 10 | Go to Step 7 |
7 | Replace the multifunction alarm module? Refer to Multifunction Alarm Module Replacement in Instrument Panel, Gages, and Console Did you complete the replacement? | Go to Step 10 | -- |
8 | Repair the open in the ground circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 10 | -- |
9 | Repair the open in the battery positive voltage circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 10 | -- |
10 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
