Fault Code Guide

Power Supply Fuses and Associated Outputs for the Bulkhead Module
BHM Power Input
BHM Power
Input Pin
Fuse Supplying BHM
Power Input
BHM Outputs Supplied BHM Output Pin
Power In Power Out
VBAT2 B4.G Fuse 20 (30A) Accessory (HVAC) B6.A9
Accessory (radio) B6.A10
Wake Up (instrument cluster) B5.D
Left High Beam B1.L
Wiper High B3.F
Horn B3.E
VBAT3 B1.N Fuse 18 (30A) Wiper Low B3.H
Spare 8.0A HSD (ignition) B5.G
Panel Lamps B5.H
Panel Lamps (smart switch) B7.A1
VBAT4 B4.K Fuse 15 (30A) Clearance Lamps B5.C
Tail Lamps/License Plate Lamp/Trailer Tail
Relay
B1.K
*
Washer Pump B3.G
12V Output (cigar lighter) B5.F
VBAT5 B1.J Fuse 7 (30A) Spare 8.5A (utility light/spotlight) B5.E / B4.M
Left Heated Mirror B4.F
Right Heated Mirror B4.E
*
This output supplies power to the Chassis Module pass-through for the tail lamps, license plate lamp, and trailer tail lamp relay.
Table 8, Power Supply Fuses and Associated Outputs for the Bulkhead Module
NOTE: Currents listed are the maximum allow-
able combined current load for each output pin
or group of pins. When maximum allowable cur-
rent load is exceeded, the BHM software will
shut off the output pin or group of pins.
In Test Mode, the outputs will deliver more cur-
rent load than the maximum allowable current
values shown. When testing, do not exceed the
maximum combined values for more than a few
minutes or the life of the output driver inside the
BHM may be shortened.
Bulkhead Module 54.12
Specifications
Business Class M2 Workshop Manual, Supplement 10, September 2006 400/7