A 2002 Chrysler Voyager has many diagnostic systems in place. Most require specialised hardware that is not available to a general customer. The Voyager's second generation On-Board Diagnostic (OBD) system is accessed most commonly. Devices capable of reading OBD-II trouble codes also are widely available at automotive parts retailers.
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All vehicles manufactured after 1996 must use the standardised system of OBD-II codes. The trouble codes themselves are separated into different categories, which are specified by the first letter in each alphanumeric trouble code: P for power train, C for chassis, B for body and U for network communication. Each category refers to a specific part of the 2002 Voyager.
Chrysler OBD-II Codes
Chrysler uses a supplemental set for its family of vehicles, which includes Dodge, Plymouth and Jeep brands. This is a coding necessity, as not all engine are mechanically the same. Most OBD-II scanners come with a users manual that lists standard codes. Chrysler's codes must be found either online or in a repair manual intended for the 2002 Voyager.
Standard Versus Chrysler
Once codes are retrieved from the Voyager's diagnostic system, there is a way to tell Chrysler codes from the standard set. Body, chassis and network communications have either a 1 or a 2 after the initial letter. For example, Chrysler codes for body problems all begin with B1 or B2. Power train codes are slightly different. Codes beginning with P1, P30, P31, P32 and P33 all are reserved for manufacturers.
How To Access
Inside a 2002 Voyager, a Data Link Connector connects a scanner to the vehicle's OBD-II system. It is located beneath the dash, and between the standard and emergency brake pedals. Connect a diagnostic cable to an OBD-II compliant scanner and insert the cable into the DLC outlet. Turn on the device and turn on the Voyager's electrical system. Some scanners may need the engine running. Command-entering procedures differ by device brand, and precise instructions will be found in the device's user's manual.
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