Haldex Modular Dolly System (HMDS) -
Functional Test for Brake Monitoring System (BMS)
Haldex Modular Dolly System (HMDS) with Brake
Monitoring System (BMS) for Single Axle Dollies
Installation/Service Guide (L31298W)
PAGE 11
All electrical power and air pressure must be removed prior to start of this test.
Step 1: Apply 12 Volts DC to the Blue ABS Pin #7 on the 7-Way Connector
- The Brake Monitoring System (BMS) alarm will sound after 15 seconds.
Step 2:
Charge the Red (IN) Emergency Gladhand to (110-120 PSI)
- The Brake Monitoring System (BMS) alarm will shut off.
NOTE: If the Brake Monitoring System (BMS) alarm continues to sound after
completing Step 2, refer to Brake Monitoring System (BMS) Installation/
Service Manual (L31290W).
Step 3: Apply 12 Volts DC to the Red Stoplight Pin #4 on the 7-Way Connector
- The Brake Monitoring System (BMS) alarm will sound after 60 seconds.
Step 4: Charge the Blue (IN) Service Gladhand to (110-120 PSI)
- The Brake Monitoring System (BMS) alarm will shut off.
NOTE: If the Brake Monitoring System (BMS) alarm continues to sound after
completing Step 4, refer to Brake Monitoring System (BMS) Installation/
Service Manual (L31290W).
7-Way Connector
Ground Pin
Blue ABS Pin #7
Red Stoplight Pin #4
