Cruise Control Inoperative Vin Z - Hummer H1 Service Manual

Section 12 Electrical System
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Step
1 Important: Before clearing the DTC's, use the
scan tool Capture Info in order to record the
Freeze Frame and the failure records for refer-
ence, as the data will be lost when the Clear Info
function is used.
Was the Powertrain On-Board Diagnostic (OBD)
System check performed?
2 Disconnect cruise control lever from cross body
harness under dash. Using a DVOM set to mea-
sure resistance, Probe the BRN wire with the neg-
ative lead and the RD wire with the positive lead.
Turn the cruise on\off switch to "on". Does the
resistance meet specification?
3 Leave the negative lead in the BRN wire, place
the positive lead in the YL wire. With the resume
switch in the neutral position, the switch should
be open. When the resume switch is moved to the
spring loaded position, the switch should close
and meet the resistance specification?
4 Leave the negative lead in the BRN wire, place
the positive lead in the GRN wire. With the set
switch in the neutral position, the meter should
display an open, with the switch pushed in the
meter should display continuity, does it?
5 Connect scan tool to vehicle, locate cruise control
On/Off switch in the engine data list. When the
switch is moved on and off, does the engine data
list reflect the change?
6 Locate resume/accel switch in engine data list.
When the switch is moved to the resume/accel
position, does the engine data list reflect the
change?
7 Locate set/coast in engine data list. When the
switch is pushed, does the data list reflect the
change?
8 Locate the brake switches in the engine data list,
depress the brake pedal, does the data list reflect
the change?
05745159

Cruise Control Inoperative VIN Z

Action
Electrical System
Value(s) Yes
Go to step 2.
<.2 Ω
Go to step 3.
neutral-open Go to step 4.
closed<.2 Ω
neutral-open Go to step 5.
closed<.2 Ω
Go to step 6.
Go to step 7.
Go to step 8.
Check for loose
or poor connec-
tion at PCM if
none are found
replace the PCM.
12-135
No
Perform on-
board diagnos-
tic system check.
Replace cruise
control arm.
Replace cruise
control arm.
Replace cruise
control arm.
Go to step 9.
Go to step 10.
Go to step 11.
Go to step 16.
4-1-00