Preliminary Checks

Most driveability problems in the Chrysler multi-point EFI system result from faulty or poor wiring, or loose and/or leaking hose connections. To avoid unnecessary component testing, a visual check should be performed before beginning trouble shooting procedures to help spot these common faults. A preliminary visual check should nclude:

• Air ducts to air cleaner, from the air cleaner to turbocharger and from turbocharger to throttle body.
• All component electrical connections must be clean, tight and unbroken.

Check vacuum lines for secure, leak-free connections in these reas:

• Throttle body.
• EGR and purge solenoids (located on a common bracket at right rear corner of engine compartment).
• Vapor canister.
• PCV valve to turbocharger vacuum port.
• Back pressure transducer.
• MAP sensor.

Ensure that the following electrical connectors are securely ttached:

• 21-way connectors (2) at logic module (Blue connector to Blue socket, Red connector to Red socket).
• 3-way connector at MAP sensor.
• 3-way and 1-way connectors at ASD relay.
• 12-way and 10-way connectors at power module.
• 3-way connector at EGR and purge solenoids.
• 2-way connector at speed sensor (located in line with speedometer cable).
• 2-way connector at charge temperature sensor.
• 6-way connector at throttle body.
• 2-way connector at each fuel injector.
• O2 sensor connector.
• 2-way connector at coolant temperature sensor.
• 3-way connector at distributor.
• 1-way connector at knock sensor (located at rear of valve cover).
• Harness ground eyelet mounting to intake manifold.