Preliminary Checks

Most driveability problems in Chrysler Corp. multi-point EFI system result from faulty wiring or loose and/or leaking hose connections. To avoid unnecessary component testing, visual check should be performed before beginning trouble shooting procedures. Preliminary visual check should include:

• Air ducts at air cleaner, turbocharger and throttle body
• All electrical connections at components

Check vacuum lines for tight, leak-free connections in these areas:

• Throttle body
• Solenoid bank
• Vapor canister
• PCV valve to turbocharger vacuum port
• Back pressure transducer
• MAP sensor

Ensure that following electrical connectors are properly attached:

• Two 25-way connectors (Red and Blue) at logic module
• 3-way and 1-way connectors at ASD relay
• 12-way (White) and 10-way (Black) power module connectors
• 4-way and 1-way connectors at solenoid bank
• 2-way speed sensor connector (in-line with speedometer cable)
• 2-way charge temperature sensor connector
• 6-way throttle body connector
• Four 2-way fuel injector connectors
• O2 sensor connector
• 2-way coolant temperature sensor connector
• Two 3-way connectors (Gray and Black) at distributor
• 1-way connector at detonation (knock) sensor
• Two 3-way radiator fan relay connectors
• Ground eyelet mounting onto intake manifold