Hummer H1 (2006+). Manual - part 243
7-54
Brake System
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6-7
Short circuit
between two sole-
noid valve leads of
left rear outlet sole-
noid valve.
22 and 4, 5, 6,
7, 21, 23, 24
6.0-15.0
Ω
Check electrical resistance of affected valves and
wiring at ECU connector and at modulator assem-
bly plug. Repair or replace wiring as necessary
and replace modulator if short is internal.
Note: Fault code for both affected valves will be
stored in memory.
6-8
Short circuit
between solenoid
valve and RCP relay
1.
11 and 4, 5, 6,
7, 21, 22, 23, 24
55.0-65.0
Ω
Check wiring harness at ECU connector to pump
relay. Repair or replace as necessary.
6-9
Short circuit
between solenoid
valve and RCP relay
2.
12 and 4, 5, 6,
7, 21, 22, 23, 24
55.0-65.0
Ω
Check wiring harness at ECU connector to pump
relay. Repair or replace as necessary.
6-12
Right front wheel
speed signal miss-
ing.
17 and 34
Greater than
0.9 volts AC
at one tire rev-
olution per
second.
Check for damaged tone wheel, incorrect sensor
adjustment, excessive tone wheel runnout (> .041"),
excessive geared hub input bearing play and tire size
mismatch. Repair or replace as necessary.
6-13
Left rear wheel
speed signal miss-
ing.
18 and 35
Greater than
0.9 volts AC
at one tire rev-
olution per
second.
Check for damaged tone wheel, incorrect sensor
adjustment, excessive tone wheel runnout (> .041"),
excessive geared hub input bearing play and tire size
mismatch. Repair or replace as necessary.
6-14
Left front wheel
speed signal miss-
ing.
15 and 32
Greater than
0.9 volts AC
at one tire rev-
olution per
second.
Check for damaged tone wheel, incorrect sensor
adjustment, excessive tone wheel runnout (> .041"),
excessive geared hub input bearing play and tire size
mismatch. Repair or replace as necessary.
6-15
Right rear wheel
speed signal miss-
ing.
16 and 33
Greater than
0.9 volts AC
at one tire rev-
olution per
second.
Check for damaged tone wheel, incorrect sensor
adjustment, excessive tone wheel runnout (> .041"),
excessive geared hub input bearing play and tire size
mismatch. Repair or replace as necessary.
Fault Code List - Ignition key “OFF” to test system (except where noted)
Test pin locations refer to ABS Pinout Box J–35592
Fault Code
Problem Area
Test Pin
Locations
Values
Check/Repair
6-1-05