Hummer H1 (2002+). Manual - part 221

 

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Hummer H1 (2002+). Manual - part 221

 

 

_____________________________________________________

 Electrical System  12-109

®

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

4-1-00

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 

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 

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 

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.

4-1-00 

_____________________________________________________

 Electrical System  12-111

®

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 

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 

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 

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.

4-1-00

12-112

Electrical System

______________________________________________________

®

8

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

<.2 

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

4-1-00 

 

 

 

 

 

 

 

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