Hummer H1 Service Manual page 1157

92 PCM/Tech 1 Scan Tool
DTC P0567 - Cruise Resume Circuit
Step
1 Important: Before clearing DTC(s) use the scan tool "Capture Info" to
record freeze frame and failure records for reference, as data will be lost
when "Clear Info" function is used.
Was the "On-Board Diagnostic (OBD) System Check" performed?
2 1. Scan tool connected.
2. Ignition "ON", engine "OFF".
3. Cruise switch "OFF".
Does scan tool display Resume Switch "ON"?
3 1. Ignition "ON".
2. Disconnect the PCM brown 32 way connector.
3. Probe the Resume switch signal circuit at the PCM harness with a test
light connected to chassis ground.
Is the test light "ON"?
4 DTC is intermittent. If no additional DTCs are stored, refer to "Diagnostic
Aids". If additional DTCs are stored, refer to those charts(s) first.
Are additional DTCs stored?
5 1. Resume switch signal circuit is shorted to voltage.
2. Repair as necessary.
Is action complete?
6 Replace the faulty PCM. Notice: If the PCM is faulty, the new PCM must
be programmed. Go to PCM replacement and programming procedures.
Is the action complete?
7 1. Using the Scan Tool, select "DTC", "Clear Info".
2. Start engine and idle at normal operating temperature.
3. Select "DTC", "Specific", then enter the DTC number which was set.
4. Operate vehicle within the conditions for setting this DTC as specified
in the supporting text.
Does the Scan Tool indicate that this diagnostic Ran and Passed?
8 Using the Scan Tool, select "Capture Info", "Review Info".
Are any DTCs displayed that have not been diagnosed?
_____________________________________________________
Action Value(s) Yes
— Go to Step 2.
— Go to Step 3.
— Go to Step 5.
— Go to the
applicable
DTC table
— Go to Step 8.
— Go to Step 7.
— Go to Step 8.
— Go to the
applicable
DTC table
®
No
Go to OBD
System Check.
Go to Step 4.
Go to Step 7.
Go to
Diagnostic
Aids.
—
—
Go to Step 2.
System OK.