Hummer H1 (2002+). Manual — part 221

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Electrical System 12-109

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05745159

5.

Immediately turn the ignition key off (3 chirps indicates
exit remote transmitter program mode) and then back on.
The vehicle's horn will sound 2 chirps indicating that the
system is in feature programming mode.

6.

Press and release the programming switch on the keyless
entry module 1 time to advance to feature number 1. The
vehicle's horn will chirp 1 time If feature 1 is in the ON
position, Or 2 times if feature 1 is in the OFF position

7.

To change the feature, press and release the LOCK button
on the keyless entry remote transmitter, and the
appropriate 1 or 2 chirp signal from the horn will identify
the new selection for that feature (Refer to the table shown
above).

8.

To advance to selectable feature number 2, press and
release the programming switch on the keyless entry
module a second time, and again the vehicle's horn will
identify the selection of that feature as “on” or “off”. Use
the lock button on the keyless entry remote transmitter to

change the feature or proceed to the next step if no change
is desired

9.

Turn the ignition key off or allow 15 seconds to pass, and
the vehicle's horn will sound 3 chirps indicating
programming mode has been terminated.

Feature Programming Hints

1.

Unless otherwise specified, if you wait more than 15 sec-
onds between steps in the programming mode, the system
will automatically terminate the programming mode. This
is indicated by the 3 chirp signal from the vehicle's horn.
Simply start over to complete programming of all features.

2.

Test the system to be sure that all selectable features are
functioning according to your customers requests. If you
have missed a feature or changed the wrong feature,
simply re-enter the feature programming mode to make
the appropriate changes.

Feature #

Function

ON or active, one chip

indication

OFF or passive, two chip

indication

1

Auto door lock
Factory preset ON

When active, doors will lock
three seconds after the igni-
tion is turned on. Will not
operate if a door is ajar.

No auto lock

2

Auto drivers door unlock. Fac-
tory preset ON

When active, drivers door
will unlock three seconds
after the ignition is turned off

No drivers auto door unlock

3

Auto passenger doors unlock.
Factory preset OFF

When active, passenger doors
will unlock three seconds
after the ignition is turned off

No passenger door auto unlock

4

*Active or passive theft deter-
rent. Factory preset ACTIVE

*This feature must be set to
passive prior to setting feature
5 to passive

When active, the theft deter-
rent system arms when the
remote transmitter LOCK
button is pushed

When the feature is off, or pas-
sive, the theft deterrent system
automatically arms 30 seconds
after the ignition is turned off
and the vehicle is departed. All
doors must be closed.

5

*Active or passive door lock-
ing. Factory preset ACTIVE

*Passive feature requires fea-
ture 4 to be set to passive

When active, doors will lock
when LOCK button is
pressed, or Auto ignition
LOCK feature is active.

When this feature is passive,
and feature four is passive, the
doors will lock 30 seconds
after the ignition is turned off
and the vehicle is departed. All
doors must be closed

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12-110

Electrical System

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Power Locks Inoperative w/o Keyless

Step

Action

Value(s)

Yes

No

1

Remove the passenger door lock switch from the
bezel. Using a DVOM measure voltage on pin 3
(CKT 517). Is the specified voltage present?

12v

Go to step 2.

Repair the open,

or bad connection

in CKT 517

between the pas-

senger side door

lock switch and

fuse 3H.

2

Disconnect the passenger door lock switch from
the harness. Using a DVOM check the resistance
to ground on pins 2 (CKT 120), and 4 (CKT 119).
Is the resistance below the specified value?

<.2

Ω

Go to step 5.

Go to step 3.

3

Remove the drivers door lock switch from the
bezel, and disconnect it from the harness. On the
drivers harness place a jumper wire between pins
1 (CKT 120) and 5 (CKT 119). With a DVOM
check for continuity between pins 2 (CKT 120)
and 4 (CKT 119) on the passenger door lock har-
ness. Does the resistance meet the specified
value?

<.2

Ω

Go to step 4.

Repair the open,

or bad connection

in CKT 120, and/

or CKT 119

between the driv-

ers and passen-

ger door

switches.

4

Remove the jumper wire from the drivers door
lock switch harness. With a DVOM check the
resistance to ground on the drives door lock
switch harness pins 2 (CKT 58) and 4 (CKT 58).
Does the resistance meet the specified values on
both pins?

<.2

Ω

Replace the

drivers door
lock switch.

Repair the open

or bad connec-

tion in CKT 58

between the driv-

ers door lock

switch and G4.

5

Connect the door lock switches to their harnesses.
Using a DVOM back probe pins 1 and 5 of the pas-
senger door lock switch. Move the switch to “Lock”,
then “Unlock”. Does the voltage alternate between
+12v and –12v?

+12v and –12v

Go to step 6.

Replace the

passenger door

lock switch.

6

Locate connector C31 under the center console.
Using a DVOM probe pin F (CKT 121), and pin
B (CKT 122). Move the passenger lock switch to
“Lock” then “Unlock”. Does the voltage alternate
between +12v and –12v?

+12v and –12v

Locate the open

or bad connec-

tion, in CKTS

117 or 118

between C 31

and the door lock

actuator.

Locate the open

or bad connec-

tion in CKTS

121 or 122

between the pas-

senger door lock

switch and C31.

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Electrical System 12-111

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05745159

Power Door Locks Inoperative, W/ Remote Entry

Step

Action

Value(s)

Yes

No

1

Remove the passenger door lock switch from the
bezel. Using a DVOM measure voltage on pin 3
(CKT 517). Is the specified voltage present?

12v

Go to step 2.

Repair the open,

or bad connection

in CKT 517

between the pas-

senger side door
lock switch and

fuse 3H.

2

Disconnect the passenger door lock switch from
the harness. Using a DVOM check the resistance
to ground on pins 2 (CKT 120), and 4 (CKT 119).
Does the resistance meet the specified value?

<.2

Ω

Go to step 5.

Go to step 3.

3

Remove the drivers door lock switch from the bezel
and disconnect it from the harness. On the drivers
harness place a jumper wire between pins 1 (CKT
120) and 5 (CKT 119). With a DVOM check for
continuity between pins 2 (CKT 120) and 4 (CKT
119) on the passenger door lock harness. Does the
resistance meet the specified value?

<.2

Ω

Go to step 4.

Repair the open,

or bad connec-

tion in CKT 120,

and/or CKT 119

between the

drivers and pas-

senger door

switches.

4

Remove the jumper wire from the drivers door lock
switch harness. With a DVOM check the resistance
to ground on the drives door lock switch harness
pins 2 (CKT 58) and 4 (CKT 58). Does the resis-
tance meet the specified value on both pins?

<.2

Ω

Replace the

drivers door
lock switch.

Repair the open

or bad connec-

tion in CKT 58

between the driv-

ers door lock

switch and G4.

5

Connect the door lock switches to their harnesses.
Using a DVOM backprobe pins 1 and 5 of the pas-
senger door lock switch. Move the switch to “Lock”,
then “Unlock”. Does the voltage alternate between
+12v and –12v?

+12v and –12v

Go to step 6.

Replace the pas-
senger door lock

switch.

6

Locate connector C31 under the center console.
Using a DVOM probe pin F (CKT 121), and pin
B (CKT 122). Move the passenger lock switch to
“Lock” then “Unlock”. Does the voltage alternate
between +12v and –12v?

+12v and –12v

Go to step 7

Locate the open

or bad connec-

tion in CKTS

121 or 122

between the pas-

senger door lock

switch and C31.

7

Using a DVOM Check the voltage drop between
connector C31 at pin D (CKT 517) and connector
C30 at pin A (CKT 58) with the negative lead. Is
the specified voltage present?

12v

Go to step 9.

Go to step 8.

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12-112

Electrical System

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8

Using a DVOM measure resistance to ground at
C30 pin A (CKT 58). Does the resistance meet
the specified value?

<.2

Ω

Repair the open

or bad connection

in CKT 517
between the

remote entry

module and fuse

3H.

Repair the open

or bad connec-

tion in CKT 58

between the

remote entry

receiver and G4.

9

Using a DVOM check the voltage drop on C30 at
pins G (CKT 554) and A (CKT 58). Is the speci-
fied voltage present?

12v

Go to step 10.

Repair the open

or bad connection

in CKT 554
between the

remote entry

module and fuse

1H.

10

Harness should be connected to the module.
Using a DVOM, set to measure voltage, back
probe C31 at pins G (CKT 117) and A (CKT 118).
Move the lock switch from “Lock” to “Unlock” and
observe the voltage polarity. Does the voltage switch
from +12v to -12v?

+12v and –12v

Repair the open

or bad connection

in CKT 117 or

118 between the

remote entry

module and door

lock actuator.

Replace remote

entry module.

Slant Door Lock Inoperative

Step

Action

Value(s)

Yes

No

1

Do the other door locks function correctly?

Go to step 2.

Refer to the

diagnostic chart(s)

that apply.

2

Gain access to the connector C41. Using a
DVOM, set to measure voltage, back probe pins E
(CKT 118) and F (CKT 117). Move the drivers
lock switch to “Lock”, then “Unlock”. Does the
voltage alternate between +12v and -12v?

+12v and -12v

Go to step 3.

Repair the open

or bad connection

in CKT 117 or

118, between

C41 and C18.

3

Gain access to the slant door actuator motor.
Disconnect the harness form the actuator. Using a
DVOM, back probe CKTS 117 and 118. Operate the
door locks in both “Lock” and “Unlock”. Does the
voltage pulse +12v then -12v?

+12v and -12v

Replace the

slant door lock

actuator.

Repair the open

or bad connection

in CKT 117 or

118, between the

actuator and C41.

Power Door Locks Inoperative, W/ Remote Entry (Continued)

Step

Action

Value(s)

Yes

No

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