Pinpoint Test C: The Boost Gauge Is Inoperative (SHELBY Gt 500 Only)

WARNING: This page is about a different car, the 2009 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.

C1 RETRIEVE THE RECORDED DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND PCM SELF-TESTS
- Check for recorded PCM DTCs from the continuous and on-demand self-tests.
- Are any DTCs retrieved?
1. YES : REFER to the Introduction - Gasoline Engines .
2. NO : Go to C2.
C2 CARRY OUT THE INSTRUMENT CLUSTER (IC) GAUGES ACTIVE COMMAND USING THE SCAN TOOL
- Key in ON position.
- Enter the following diagnostic mode on the diagnostic tool: Instrument Cluster (IC) DataLogger
- Select the instrument cluster (IC) boost gauge (BOOST) active command the boost gauge on while monitoring the boost gauge.
- Does the boost gauge sweep correctly?
1. YES : Go to C3.
2. NO : Go to C4.
C3 CHECK FOR CORRECT PCM OPERATION
- Disconnect all PCM connectors.
- Check for:
  - corrosion
  - damaged pins
  - pushed-out pins
- Connect all PCM connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
1. YES : INSTALL a PCM. REFER to ELECTRONIC ENGINE CONTROLS . TEST the system for normal operation.
2. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
C4 CHECK FOR CORRECT INSTRUMENT CLUSTER (IC) OPERATION
- Disconnect all instrument cluster (IC) connectors.
- Check for:
  - corrosion
  - damaged pins
  - pushed-out pins
- Connect all instrument cluster (IC) connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
1. YES : INSTALL a new instrument cluster (IC). REFER to Instrument Cluster (IC) . TEST the system for normal operation.
2. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.