B10 Check Internal Antilock Brake Control Module Diode

- Key OFF.

- Unplug fluid level switch from brake master cylinder.

- Jump pins 1 and 2 of the fluid level switch.

- Key ON.

- Is the red brake warning lamp On?

YES -- Locate and repair short to ground in Circuit 512 (T/LG). Reconnect all loose connections. Go to B13. B13 Verify Condition Resolved

NO -- Faulty fluid level switch. Replace brake master cylinder reservoir. Reconnect all loose connections. Go to B13. B13 Verify Condition Resolved