Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. With the scan tool, read Instrument Panel Cluster (IPC) DTCs and record on the repair order.
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - Perform the TESTING FOR AN INTERMITTENT CONDITION. Refer to INTERMITTENT CONDITION .
CHECK THE TURBO BOOST GAUGE CONNECTOR
1. Turn the ignition off.
2. Check the Turbo Boost Gauge harness connector for signs of water intrusion, corrosion, pushed out or bent terminals, correct pin tension and properly seated.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 3
CHECK THE (D500) LIN BUS CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the Turbo Boost Gauge harness connector.
3. Disconnect the Instrument Cluster harness connector.
4. Check for continuity between ground and the (D500) LIN Bus circuit at the Turbo Boost Gauge harness connector.
  Is there continuity between ground and the (D500) LIN Bus circuit?
  
  Yes
  - Repair the (D500) LIN Bus circuit for a short to ground.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 4
REPLACE THE TURBO BOOSTER GAUGE, ERASE DTCS AND CHECK FOR DTC TO RETURN
1. Replace the Turbo Booster Gauge in accordance with the Service Information. Refer to GAUGE, BOOST, REMOVAL .
2. Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  Did the DTC return?
  
  Yes
  - Replace the Instrument Panel Cluster (IPC) in accordance with the Service Information. Refer to REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Test complete.