DIAGNOSTIC MANUAL
Step
Action
Decision
18
Perform Standard Test to verify all engine systems are operating as
designed. Verify engine coolant temperature is greater than 158°F
(70°C). Using Electronic Service Tool (EST) with ServiceMaxx™
software, go to Tests > KOER Tests > Standard Test.
Does Standard Test run and pass?
Yes: Go to step 19
No: Diagnose and repair
active fault code(s). Go to
Electronic Control System
Diagnostics section in
Engine Diagnostic Manual.
Step
Action
Decision
19
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.
33
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