DIAGNOSTIC MANUAL
Step
Action
Decision
11
Perform Standard Test to verify all engine systems are operating as
designed. Verify engine coolant temperature is greater than 158°F (70°C).
Using EST with ServiceMaxx™ software, go to Tests > KOER Tests >
Standard Test.
Does Standard Test run and pass?
Yes: Go to step
12
No: Diagnose
and repair active
fault code(s)
(see Electronic
Control System
Diagnostics
section in Engine
Diagnostic
Manual).
Step
Action
Decision
12
Perform the following MAF Sensor Calibration procedure to accommodate
for system repairs:
1.
Verify engine coolant temperature is greater than 180°F (82°C),
and lube oil temperature is greater than 176°F (80°C).
2.
Using EST with ServiceMaxx software, go to Tests > and
deselect Load Test Specific Session.
3.
Go to Sessions > Performance and select the record snapshot
icon from the toolbar.
4.
Go to procedures > KOER Procedures > MAF Sensor
Calibration.
5.
After MAF Sensor Calibration is complete, stop recording.
6.
Turn the ignition switch to the OFF position for a minimum of
30 seconds.
7.
Repeat steps 3 through 5 to complete second MAF Sensor
Calibration.
Does MAF Sensor Calibration procedure run and pass?
Yes: Diagnostics
complete
No: Go to
Performance
Diagnostics
section in Engine
Diagnostic
Manual.
16
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