Normal Operation

The operating voltage required to supply the ABS module, hydraulic pump and isolation valves is in a range between 10 and 16 volts.

Fused battery voltage is supplied to the ABS module from Battery Junction Box (BJB) fuse 9 (40A) along circuit SBB09 (RD) and fuse 18 (20A) along circuit SBB18 (YE/RD). Fused ignition voltage is supplied to the ABS module from Smart Junction Box (SJB) fuse 35 (15A) along CBP31 (BU/OG) and ground is provided to the module along circuit GD122 (BK).

• DTC B1676 (Battery Pack Voltage Out of Range) - If, during normal operation, the vehicle battery voltage becomes less than 9.7 volts for more than 210 ms with vehicle speed greater than 20 km/h (12 mph), or the vehicle battery voltage becomes greater than 18 volts, DTC B1676 will be set. Also, if during the ABS module self-test the vehicle battery voltage becomes higher than 18 volts, DTC B1676 will be set.

This pinpoint test is intended to diagnose the following: 

• Fuse(s)
• Wiring, terminals or connectors
• Charging system
• ABS module