SYSTEM/ACTUATOR TESTS
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EGR Mass Flow Rate Test Routine Start
The EGR Mass Flow Rate Test Routine Start function lets you initiate the
Exhaust Gas Recirculation (EGR) mass flow rate test.
1. Select EGR Mass Flow Rate Test Routine Start in the Special
Functions menu, then press ENTER .
n An “instructional” screen displays. Prepare the vehicle for test as
directed:
- Start and idle the engine.
2. Choose Yes to continue.
n A “status” screen displays while a vehicle status check is
performed.
n The Select Flow Rate screen displays.
3. Select Normal, Closed, Open or the desired flow rate (100 g/s, 200
g/s, 300 g/s), then press ENTER .
n The Test Results screen displays.
n The screen shows the current values
for MAP Vacuum, Engine Speed,
EGR Sensed Volts and EGR Duty
Cycle.
4. If desired, choose Reselect to return to
the Select Flow Rate screen, and repeat
step 3 to select a new flow rate.
5. Choose Finish to return to the Special Functions menu.
Cam Crank Relearn
1. Select Cam Crank Relearn in the Special Functions menu, then
press ENTER .
n An “instructional” screen displays. Prepare the vehicle for test as
directed:
- Turn the ignition on. DO NOT start the engine.
2. Choose Yes to continue.
n A “status” screen displays while a vehicle status check is
performed.
3. A “confirmation” screen displays when the learn routine begins.
n An “instructional” screen displays while the procedure is in
progress. Perform the following when prompted:
- Start and run the engine until engine coolant temperature is greater
than 70°C (158°F).
n A “results” screen displays when the learn procedure has
completed.
4. Choose Finish to return to the Special Functions menu.
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