Hummer H1 (2006+). Manual — part 353
12-88
Electrical System
_______________________________________________________
Power Windows Inoperative, All Windows (Figure 12-156)
Step
Action
Value(s)
Yes
No
1.
Remove relay R4 from the interior fuse box. With a
DVOM, check the black wire (CKT 59) for resistance to
ground. Does the resistance meet the specified value?
<.2
1
Go to step 2.
Repair the open or bad
connection in CKT 59
between relay R4 and
Ground G4.
2.
With a DVOM, check the voltage on the blue wire (CKT
175) at R4. Is the specified voltage present?
+12v
Go to step 3.
Repair the open or bad
connection in CKT 175
between R4 and fuse
5M in the exterior fuse
box.
3.
Turn the ignition switch to the “Run” position. With a
DVOM, check the voltage on the dark green wire (CKT
296) at R4. Is the specified voltage present?
+12v
Go to step 4.
Repair the open or bad
connection in CKT 296
between R4 and fuse
2G in the interior fuse
box.
4.
Remove the drivers door window switch and harness from
the bezel. Disconnect the power window switch from the har-
ness. With a DVOM, check the resistance between the red
wire (CKT 171) on the drivers power window switch harness
and the red wire (CKT 171) at R4 of the interior fuse box.
Does the resistance meet the specification?
<.2
1
Replace relay R4 in the
interior fuse box.
Repair the open or bad
connection in CKT
171 between the driv-
ers window switch and
R4.
Power Windows Only Operate Using The Console Switches
Step
Action
Value(s)
Yes
No
1.
Does the drivers door window operate as designed?
–––
Go to step 2.
Refer to the proper
chart.
2.
If the window lock out switch is in the “Lock” position
move it to the “Unlock” position. Are the power win-
dows operating as designed?
–––
No further repair is
needed at this time.
Go to step 3.
3.
Gain access to the power window switches on the con-
sole. With a DVOM, check for a ground at each of the
black wires (CKT 56) on all three power window
switches. Do all six wires meet with the specified value
for resistance to ground?
<.2
1
Go to step 4.
Repair the open or bad
connection between the
power window switches
and ground G4.
4.
Turn the ignition switch to the “Run” position. With a
DVOM, back probe the purple wire (CKT 222) on the
power window lock out switch. Make sure the switch is
in the “Unlock” position. Is the specified voltage
present?
+12v
Refer to the individ-
ual window charts.
Go to step 5.
5.
With the ignition still in the “Run” position check the
voltage on the red wire (CKT 171) of the power window
lockout switch harness. Is the specified voltage present?
+12v
Replace the power
window lock out
switch.
Repair the open or bad
connection between the
power lock out switch
and relay R4.
______________________________________________________
Electrical System 12-89
Passenger Front Door Power Window Inoperative
Step
Action
Value(s)
Yes
No
1.
Do all the other windows operate as designed?
––-
Go to step 2.
Refer to the
proper chart.
2.
Gain access to the passenger front power window
switch harness. Turn the ignition switch to the run
position. With a DVOM, check the voltage at the
purple wire (CKT 170). Is the specified voltage
present?
+12v
Go to step 3.
Repair the open
or bad connection
in CKT 170
between the
power window
switch and the
power window
lock out switch.
3.
Disconnect the power window switch from the
harness. Using a DVOM, check for resistance to
ground on the orange wire (CKT 314) and the
dark blue wire (CKT 313). Does the resistance
meet the specifications?
<.2
1
Go to step 4.
Repair the open
or bad connection
on CKT 313 or
314 between the
passenger door
window switch
and the console
window switch.
4.
Connect the power window switch to the harness
and make sure that the ignition switch is in the run
position. With a DVOM, back probe the red wire
(CKT 227) and the yellow wire (CKT 226) at the
same time. Check the voltage while operating the
switch from “Up” to “Down”. Is the specified volt-
age present and does the polarity change from posi-
tive to negative with the action of the switch?
+12v to -12v
Go to step 5.
Replace the
passenger front
power window
switch.
5.
Gain access to the power window motor and dis-
connect the harness. With a DVOM, back probe
the red wire (CKT 227) and the yellow wire
(CKT 226). Operate the power window switch
and watch the voltage. Is the specified voltage
present and does it change from positive to nega-
tive with the action of the switch.
+12v to -12v.
Replace the pas-
senger front
window motor.
Repair the open
or bad connection
on either CKTs
226 or 227
between the
power window
motor and
switch.
(Passenger/Drivers) Rear Door Power Window Inoperative
NOTE: Refer to the wiring diagram for the circuit numbers.
Step
Action
Values
Yes No
1.
Do all the other windows operate as designed?
––-
Go to step 2.
Refer to the
proper chart.
12-90
Electrical System
_______________________________________________________
2.
Gain access to the right rear power window
switch harness. Turn the ignition switch to the run
position. With a DVOM, check the voltage at the
purple wire (CKT 170). Is the specified voltage
present?
+12v
Go to step 3.
Repair the open
or bad connection
in CKT 170
between the
power window
switch and the
power window
lock out switch.
3.
Disconnect the power window switch from the
harness. Using a DVOM, check for resistance to
ground on the brown (CKT 319) wire and the
light green wire (CKT 320) Does the resistance
meet the specifications?
<.2
1
Go to step 4.
Repair the open
or bad connection
on (CKT 319) or
(CKT 320)
between the door
window switch
and the console
window switch.
4.
Connect the power window switch to the harness
and make sure that the ignition switch is in the run
position. With a DVOM, back probe terminals 1 and
5 at the same time. Check the voltage while operat-
ing the switch from “Up” to “Down”. Is the speci-
fied voltage present and does the polarity change
from positive to negative with the action of the
switch?
+12v to -12v
Go to step 5.
Replace the
power window
switch.
5.
Gain access to the power window motor and dis-
connect the harness. With a DVOM, back probe
the red wire (CKT 227) and the yellow wire
(CKT 226), Operate the power window switch
and watch the voltage. Is the specified voltage
present and does it change from positive to nega-
tive with the action of the switch.
+12v to -12v.
Replace the
window motor.
Repair the open
or bad connection
on (CKT 227) or
(CKT 226)
between the
power window
motor and
switch.
(Passenger/Drivers) Rear Door Power Window Inoperative
NOTE: Refer to the wiring diagram for the circuit numbers.
Step
Action
Values
Yes No
______________________________________________________
Electrical System 12-91
POWER DOOR LOCKING AND KEYLESS ENTRY SYSTEM
System Description
Operation of the power door locks starts with activation of the door lock switch or remote transmitter (Figure 12-61). A signal is
received by the remote keyless entry module. The module will then activate the door locks.
The keyless entry system allows convenient operation of the vehicle door locks from a distance. Equipped vehicles are supplied
with two, three button remote transmitters used to operate the system. Two additional remote transmitters can be added.
Figure 12-61: Door Lock Switch and Remote
Power Door Lock Switch Replacement
NOTE: Switch replacement is the same for all doors.
Removal
1.
Remove the screws, and the bezel (Figure 12-62).
2.
Disconnect the console harness from the switch.
3.
Separate the switch from the mounting plate.
Installation
1.
Install the switch in the bezel.
2.
Connect the switch to the console harness.
3.
Install the switch in the bezel and secure with the screws.
Figure 12-62: Power Door Lock Switch Mounting
Power Door Lock Actuator Replacement
Removal
NOTE: Actuator replacement is the same for all doors.
DOOR LOCK SWITCH
REMOTE TRANSMITTER
BEZEL
SWITCH
HARNESS
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст