Hummer H1 Service Manual page 480

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Ignition key "OFF" to test system (except where noted)
Fault Code Problem Area
5-15 Right rear
wheel speed
signal is erratic.
6-0 Short circuit
between two
solenoid valve
leads of right
front inlet sole-
noid valve.
6-1 Short circuit
between two
solenoid valve
leads of right
front outlet
solenoid valve.
6-2 Short circuit
between two
solenoid valve
leads of left
front inlet sole-
noid valve.
6-3 Short circuit
between two
solenoid valve
leads of right
front outlet
solenoid valve.
6-4 Short circuit
between two
solenoid valve
leads of right
rear inlet sole-
noid valve.
6-5 Short circuit
between two
solenoid valve
leads of right
rear outlet
solenoid valve.
05745159
Fault Code List
Test Pin
Values
Locations
16 and 33 Greater than 0.9
volts AC at one
tire revolution
per second
5.0-7.5 W
6 and 4, 5, 7,
21, 22, 23, 24
3.0-5.0 W
7 and 4, 5, 6,
21, 22, 23, 24
5.0-7.5 W
23 and 4, 5, 6,
7, 21, 22, 24
3.0-5.0 W
24 and 4, 5, 6,
7, 21, 22, 23
5.0-7.5 W
4 and 5, 6, 7,
21, 22, 23, 24
3.0-5.0 W
5 and 4, 6, 7,
21, 22, 23, 24
Brake System
Check/Repair
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 neces-
sary.
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.
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.
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.
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.
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.
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.
7-41