Slant Door Lock Inoperative - Hummer H1 Service Manual

12-112 Electrical System
Power Door Locks Inoperative, W/ Remote Entry (Continued)
Step
8 Using a DVOM measure resistance to ground at
C30 pin A (CKT 58). Does the resistance meet
the specified value?
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?
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?
Step
1 Do the other door locks function correctly?
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?
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?
4-1-00
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Action

Slant Door Lock Inoperative

Action
Value(s) Yes
<.2 Ω
Repair the open
or bad connection
in CKT 517
between the
remote entry
module and fuse
3H.
12v Go to step 10.
+12v and –12v Repair the open
or bad connection
in CKT 117 or
118 between the
remote entry
module and door
lock actuator.
Value(s) Yes
Go to step 2.
+12v and -12v Go to step 3.
+12v and -12v Replace the
slant door lock
actuator.
®
No
Repair the open
or bad connec-
tion in CKT 58
between the
remote entry
receiver and G4.
Repair the open
or bad connection
in CKT 554
between the
remote entry
module and fuse
1H.
Replace remote
entry module.
No
Refer to the
diagnostic chart(s)
that apply.
Repair the open
or bad connection
in CKT 117 or
118, between
C41 and C18.
Repair the open
or bad connection
in CKT 117 or
118, between the
actuator and C41.