Hummer H1 Service Manual page 264

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Step
1 1. Connect scan tool.
NOTE: Important: Before clearing DTC(s) use the
scan tool to record "Freeze Frame" and "Failure
Records" for reference, as data will be lost when the
"Clear Info" function is used.
2. Turn ignition "on".
3. Record and clear the DTC Freeze-Frame/Failure
Records and the DTCs.
2 1. Start engine, transmission in park.
2. Disconnect wiring harness at the Input Speed Sen-
sor.
3. Connect multimeter set on AC Voltage across ter-
minals of input speed sensor.
Does the meter indicate voltage above value?
3 Check circuit 495 for an open.
Was problem found?
4 Check sensor harness for open.
Was problem found?
5 1. Probe across terminals J 1 -D 11 and J 1 -D 1 at
PCM connector J1 with multimeter set on AC volt-
age.
2. Start engine, transmission in park.
Does the meter indicate voltage above value?
6
Check PCM for faulty or intermittent connections.
Was the problem found?
7 Repair open in circuit 495 as needed.
Was the problem corrected?
8 Repair the faulty connections at the PCM.
Was the problem corrected?
9 Replace the input speed sensor.
10
Replace PCM.
11 1. After repair is complete, select scan tool "Clear
Info" function and operate the vehicle under the
following conditions:
• Vehicle "drive" range and engine running.
• PCM must see an input speed change of less
than 1000 rpm for 1 second.
2. Review the scan tool "Specific DTC" and enter
"0716."
05745159
DTC P0716 Input Speed Sensor Range/Performance
Action
Transmission/Transfer Case
Value
—
Go to Step 2
Above.5 volts
Go to Step 3
—
Go to Step 7
—
Go to Step 8
Above.5 volts
Go to Step 6
—
Go to Step 8
—
Go to Step 13
—
Go to Step 12
—
Go to Step 11
—
Go to Step 11
—
5-65
Yes No
—
Go to Step 10
Go to Step 4
Go to Step 5
Problem inter-
mittent. Refer
to Diagnostic
aids.
Go to Step 7
—
—
—
—
Repair veri-
fied, exit DTC
— table.