Content .. 351 352 353 354 ..

Hummer H1 (2006+). Manual - part 353

12-88

Electrical System

_______________________________________________________

Power Windows Inoperative, All Windows (Figure 12-156)

Step

Action

Value(s)

Yes

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

Go to step 2.

Repair the open or bad

connection in CKT 59

between relay R4 and

Ground G4.

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.

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.

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

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

Does the drivers door window operate as designed?

–––

Go to step 2.

Refer to the proper

chart.

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.

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

Go to step 4.

Repair the open or bad

connection between the

power window switches

and ground G4.

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.

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

Do all the other windows operate as designed?

––-

Go to step 2.

Refer to the

proper chart.

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.

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

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.

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.

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

Do all the other windows operate as designed?

––-

Go to step 2.

Refer to the

proper chart.

12-90

Electrical System

_______________________________________________________

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.

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

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.

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.

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

Remove the screws, and the bezel (Figure 12-62).

Disconnect the console harness from the switch.

Separate the switch from the mounting plate.

Installation

Install the switch in the bezel.

Connect the switch to the console harness.

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

Content .. 351 352 353 354 ..