Hummer H1 Service Manual page 1109

44 PCM/Tech 1 Scan Tool
DTC P0215 - Engine Shutoff Solenoid Circuit Malfunction
Step
1 Important: Before clearing DTC(s) use the scan tool "Capture Info" to
record Freeze Frame and Failure Record for reference, as data will be lost
when "Clear Info" function is used.
Was the "On-Board Diagnostic (OBD) System Check" performed?
2 1. Ignition "ON", engine "OFF".
2. Using scan tool, command ESO "ON" and "OFF".
Does ESO respond to scan tool commands?
3 1. Ignition "OFF".
2. Disconnect the PCM electrical connector.
3. Ignition "ON", engine "OFF".
4. With a test light connected to chassis ground, probe ESO control circuit
at PCM harness connector.
Is test light "ON".
4 DTC is intermittent. If no additional DTCs are stored, refer to "Diagnostic
Aids". If additional DTCs are stored refer those table(s).
5 Check the ESO control circuit for a poor connection at the PCM and replace
terminal if necessary.
Did the terminal require replacement?
6 1. Check the ESO control circuit for:
• an open
• faulty bulb
• faulty fuse
2. If the ESO control circuit was faulty, repair it as necessary.
Was repair performed?
7 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?
8 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?
9 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 4. Go to Step 3.
— Go to Step 5.
— —
— Go to Step 8.
— Go to Step 8.
— Go to Step 8.
— Go to Step 10. Go to Step 2.
— Go to the
applicable
DTC table
®
No
Go to OBD
System Check.
Go to Step 6.
—
Go to Step 7.
—
—
Go to Step 2.