800.MACTOOLS
79
SPECIAL TESTS
2007
Jeep
Compression Test
Idle Speed Setpoint
Engine Tests
ALL TESTS
ACCESS VIN
DIESEL CONTROLS
DPF TESTS
EGR TESTS
FAN TESTS
FUEL TESTS
OTHER TESTS
RESET TESTS
OXYGEN SENSOR TESTS
ENGINE TESTS
W
rangler
Unlimited Rubicon 3.8
Current
ENGINE
ss02499
3. Only the tests meeting the search criteria are displayed. Select the desired test to be executed.
Note: Some tests may require a registration like Tire Pressure Sensor Test
SPECIAL TESTS
2007
Jeep
Continue
Engine Must Not be Running
For this test
Compression Test
W
rangler
Unlimited Rubicon 3.8
Current
ENGINE
Abort
ss02500
4. Follow the prompts on the screen.
NOTE: Some of the instruction text may not exactly match what is on the screen. This will be updated as pro-
duct updates are released.
SPECIAL TESTS
2007
Jeep
Continue
Fuel to the injectors will be disabled
Battery MUST be fully charged
The average engine speed should be
compared with the cylinder selective
engine speeds. If a cylinder has a deviation
of more than 6 RPM compared with the
average engine speed, there is a
high probability that the cylinder has a
compression problem.
This test should be repeated three times
to get a statistical based result.
Compression Test
W
rangler
Unlimited Rubicon 3.8
Current
ENGINE
Abort
ss02501
5. To terminate a test at any time, use the emergency stop button. To exit special tests normally, select the
exit or abort button.
Note: Exit or abort will both stop the current special test and take you back to the start of Special Tests
