Section 68 (Engine Controls - System/Component Tests - 5.2L CNG): Introduction
WARNING: This page is about a different car, the 1995 Dodge Ram Wagon, 1995 Dodge Ram Van, 1995 Dodge Pickup, and 1995 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Testing procedures not covered in this article require a Chrysler Diagnostic Readout Box (DRB). See TESTS W/CODES - 5.2L CNG
article in the ENGINE PERFORMANCE section.
NOTE:
For component location, see THEORY/OPERATION - 5.2L CNG
article in the ENGINE PERFORMANCE section.
Before testing individual components or systems, perform procedures in BASIC TESTING - 5.2L CNG article in the ENGINE PERFORMANCE section. Since many computer-controlled and monitored components set a trouble code if they malfunction, also perform procedures in TESTS W/CODES - 5.2L CNG article in the ENGINE PERFORMANCE section.
NOTE:
Testing of individual components does not isolate possible shorts or opens in the wiring harness of electronically controlled systems. Perform all voltage tests with a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance, unless stated otherwise in procedure. Use an ohmmeter to isolate wiring harness shorts or opens.
The following engine components (as used on CNG vehicle) are identical to components used on gasoline equipped vehicles. For component testing, see SYSTEM/COMPONENT TESTS - 5.2L CNG section.
- Throttle Body
- Accelerator Linkage
- Manifold Absolute Pressure (MAP) Sensor
- Engine Coolant Temperature Sensor
- Intake Manifold
- Intake Manifold Charge Air Temperature Sensor (5.2L)
- Throttle Position Sensor
- Idle Air Control Motor (Automatic Idle Speed)
- Crankshaft Position Sensor
- Automatic Shutdown Relay
- Oxygen Sensor
- Vehicle Speed Sensor
- Ignition System
- Air Conditioning Components
- Speed Control Components
- Overdrive Components
- Alternator (Generator)
- Park/Neutral Position Switch
- Brake Switch Controls