Hummer H3. Manual — part 934

Cruise Set/Coast Switch

Do all of the parameters listed above
display Off?

Go to Step 3 Go to Step 13

3

1. With the scan tool, observe the

Cruise On/Off Switch
parameter.

2. Turn the cruise On/Off switch

ON.

Does the Cruise On/Off Switch
parameter display On?

-

Go to Step 4 Go to Step 11

4

1. With the scan tool, observe the

Cruise Set/Coast Switch
parameter.

2. Press and hold the set/coast

switch.

Does the Cruise Set/Coast Switch
parameter display On?

-

Go to Step 5 Go to Step 12

5

1. With the scan tool, observe the

Cruise Resume/Accel Switch
parameter.

2. Press and hold the resume/accel

switch.

Does the Cruise Resume/Accel
Switch parameter display On?

-

Go to Step 6 Go to Step 12

6

Do the stop lamps operate properly?

-

Go to Step 7

Go to Stop
Lamps
Inoperative
or
Go to Stop
Lamps
Always On

Test the stop lamp supply voltage
circuit for an open or for a high
resistance. Refer to Circuit Testing

2007 Hummer H3

2007 ACCESSORIES & EQUIPMENT Cruise Control - H3

7

and to Wiring Repairs .
Did you find and correct the
condition?

-

Go to Step

25

Go to Step 8

8

Is the vehicle equipped with a
manual transmission?

-

Go to Step 9

Go to Step 20

9

1. Turn OFF the ignition.

2. Disconnect the clutch release

switch.

3. With a DMM, measure the

resistance of the clutch pedal
position (CPP) switch between
the ignition 1 voltage circuit
and the CPP switch signal
circuit.

Does the resistance measure between
the specified values?

10-15 ohms

Go to Step

10

Go to Step 18

10

1. Depress and hold down the

clutch pedal.

2. With a DMM, measure the

resistance of the CPP switch
between the ignition 1 voltage
circuit and the CPP switch
signal circuit.

Does the resistance measure at the
specified value?

O.L.

Go to Step

14

Go to Step 18

11

Connect a DMM between the
ignition 1 voltage circuit at the back
of C204 and a good ground.
Does the voltage measure at the
specified value?

B+

Go to Step

12

Go to Step 21

1. Turn OFF the ignition.

IMPORTANT:

The cruise control On/Off switch must
be turned ON in order to correctly view
the set/coast resistance value with the
DMM.

2007 Hummer H3

2007 ACCESSORIES & EQUIPMENT Cruise Control - H3

12

2. Disconnect C204.

3. With a DMM, measure the

resistance of the cruise control
switch between the ignition 1
voltage circuit and the cruise
control set/coast and
resume/accelerate switch signal
circuit.

4. Individually activate and hold

the cruise control function
switches while measuring the
resistance of the cruise control
function switches.

Do the cruise control function switch
resistance values measure between
the specified values?

Off = O.L.

On = 7.8 K

ohms - 8.6

K ohms

Resume =

2.7 K ohms

- 3.0 K

ohms

Set = 1.2 K

ohms - 1.3

K ohms

Go to Step

17

Go to Step 19

13

1. Turn OFF the ignition.

2. Disconnect C204.

3. With a DMM, measure the

resistance of the cruise control
switch between the ignition 1
voltage circuit and the cruise
control set/coast and
resume/accelerate switch signal
circuit.

4. Individually activate and hold

the cruise control function
switches while measuring the
resistance of the cruise control
function switches.

Do the resistance values measure at

IMPORTANT:

The cruise control On/Off switch must
be turned ON in order to correctly view
the set coast resistance value with the
DMM.

Off = O.L.

On = 7.8 K

ohms - 8.6

K ohms

Resume =

2.7 K ohms

- 3.0 K

ohms

Set = 1.2 K

ohms - 1.3

K ohms

Go to Step

2007 Hummer H3

2007 ACCESSORIES & EQUIPMENT Cruise Control - H3

the specified values?

16

Go to Step 19

14

1. Turn ON the ignition, with the

engine OFF.

2. Connect a test lamp between

the ignition 1 voltage circuit
and a good ground.

Does the test lamp illuminate?

-

Go to Step

15

Go to Step 21

15

Test the clutch switch signal circuit
for the following:

An open

A short to voltage

A short to ground

A high resistance

Refer to Circuit Testing and
Wiring Repairs .
Did you find and correct the
condition?

-

Go to Step

25

Go to Step 20

16

Test the cruise control set/coast and
resume/accelerate switch signal
circuit for a short to voltage. Refer to
Circuit Testing and Wiring
Repairs .
Did you find and correct the
condition?

-

Go to Step

25

Go to Step 20

17

Test the cruise control set/coast and
resume/accelerate switch signal
circuit for the following:

An open

A high resistance

A short to ground

Refer to Circuit Testing and

-

2007 Hummer H3

2007 ACCESSORIES & EQUIPMENT Cruise Control - H3