Engine Compression Inspection
NOTE: After the inspection, you must reset the ECM/PCM. Otherwise, the
ECM/PCM will continue to stop the injectors from operating.
Allow the engine to reach operating temperature (fan comes o ...
Checking the Battery
Check the battery condition monthly. Look at
the test indicator window and check the
terminals for corrosion.
If your vehicle’s battery is disconnected or goes dead:
• The audio system* is d ...
Emissions Testing
Testing of Readiness Codes
Your vehicle uses “readiness codes,” as part of its onboard self diagnostic
system.
Some states refer to these codes during testing to see if your vehicle’s
em ...