Hummer H1 Service Manual page 1172

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DTC P1217 - Fuel Solenoid Response Time Too Long
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 Is DTC P0370 set?
3 1. Engine at operating temperature.
2. Observe Inj. Pump Closure Time on scan tool.
Is the scan tool display greater than or equal to the specified value?
4 1. All accessories on (includes aftermarket add-ons).
2. Engine idling.
3. All post glow plug cycles completed.
4. With a J–39200 connected to ground, measure voltage at the FUEL SOL
fuse (fuel solenoid driver ignition feed circuit) in the U/H relay center.
Is voltage between specified value?
5 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?
6 Repair the fuel solenoid driver ignition feed circuit poor connections or
aftermarket add-ons.
Was a repair performed?
7 Replace injection pump. Notice: If injection pump is faulty, the new injec-
tion pump must be timed. Refer to Checking and Adjusting Injection Timing
in Section 4.
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?
05745159
Action
PCM/Tech 1 Scan Tool 107
Value(s) Yes
— Go to Step 2.
— Refer to
applicable
table.
2.4 ms Go to Step 5.
12 - 15v Go to Step 7.
— Go to
applicable
DTC table.
— Go to Step 8.
— Go to Step 8.
— Go to Step 9.
— Go to the
applicable
DTC table
No
Go to OBD
System Check.
Go to Step 3.
Go to Step 4.
Go to Step 6.
Go to
Diagnostic Aids
—
—
Go to Step 2.
System OK.