Pinpoint Test A: B1676: Notes
Refer to Vehicle Dynamic Systems for schematic and connector information.
Normal Operation and Fault Conditions
The ABS module, hydraulic pump and solenoid valves require an operating voltage between 10 and 17 volts. The parking brake system requires an operating voltage of 9 volts or higher. The ABS module receives this voltage from the BJB. The ABS module has 2 ground circuits, one logic ground and one pump motor ground.
DTC B1676 can be set if the vehicle has been recently jump started, the battery has been recently charged or the battery has been discharged. The battery may become discharged due to excessive loads on the charging system from aftermarket accessories or if the battery has been left unattended with the accessories on.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1676 | Battery Pack Voltage Out of Range | This DTC sets if the voltage supplied to the ABS module falls below 9.4 volts or increases higher than 17.2 volts with vehicle speed greater than 6 km/h (4 mph). This is can be due to excessive resistance or an open in one or more of the voltage or ground circuits, a discharged battery or an inoperative charging system. |
Possible Causes
- Fuses
- Wiring, terminals or connectors
- 12-volt battery
- Charging system
- ABS module
Visual Inspection and Diagnostic Pre-checks
- Make sure the vehicle battery terminals and cables are free of any corrosion and other contaminants.
- Make sure the vehicle battery terminals are tightened to their correct torque specifications.
- Make sure BJB fuses 52 (10A), 68 (30A) and 69 (60A) are OK.