Using DRBIII(R) Scan Tool
- Scan tool is grounded through Data Link Connector (DLC) connector. Only one volt/ohmmeter test lead is required when instructed by testing to measure voltage or resistance on specified circuit. Volt/ohmmeter mode should only be used when system tests require use of this option or when prompted by scan tool.
- Connect scan tool to Data Link Connector (DLC) 16-pin connector. See Fig 1 . See COMPONENT LOCATIONS . Turn ignition switch to ON position. If scan tool LEDs do not illuminate and no sound emitted, check for poor cable connections. Check for a minimum of 11 volts at DLC connector terminal No. 16, and repair power supply as necessary. If scan tool display remains blank, consult scan tool manufacturer's manual. If scan tool LEDs illuminate and sound is emitted, continue with fault message and code retrieval.
- Using scan tool, select SYSTEM MONITORS, then PCI BUS TEST. Scan tool will perform a PCI BUS test. If scan tool displays BUS OPERATIONAL, go to next step. If scan tool displays any message except BUS OPERATIONAL, go to appropriate procedure for message displayed. See SYMPTOM IDENTIFICATION table under SELF-DIAGNOSTIC SYSTEM. If scan tool displays any PCI bus fault message or any NO RESPONSE message, it must be diagnosed before proceeding with any other diagnostics.
- Using scan tool, read DTCs. If any Diagnostic Trouble Code (DTC) message is present, go to appropriate procedure for DTC message(s) displayed. See DIAGNOSTIC TROUBLE CODE IDENTIFICATION table under SELF-DIAGNOSTIC SYSTEM. If no DTC messages are present, identify customer complaint and diagnose by symptom(s) present. See SYMPTOM IDENTIFICATION table under SELF-DIAGNOSTIC SYSTEM. When diagnosing a system with many apparent problems, a sequence of tests may be required. After repairs, ensure all problems or failures have been corrected. Perform appropriate verification test. See VERIFICATION TESTS .
NOTE:
Refer to DRBIII(R) scan tool manufacturer's instructions to retrieve and clear fault messages and when performing other scan tool functions.
DIAGNOSTIC TROUBLE CODE IDENTIFICATION
SYMPTOM IDENTIFICATION
| Affected System (1) | Symptom | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air Bag Restraint System | (2) | ||||||||||||
| Chime System | Chime Inoperative At All Times Chime Inoperative With Driver's Seat Belt Unfastened Chime Inoperative With Interior Or Exterior Lights On & Driver's Door Open Chime Inoperative With Key In Ignition & Driver's Door Open Chime Remains On With Driver's Door Open & Key Removed Chime Remains On With Driver's Seat Belt Fastened |
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| Communication | (3) | ||||||||||||
| Compass/Mini-Trip Computer | Average Fuel Inoperative Or Inaccurate; Distance To Empty Inoperative Or Inaccurate; Instant Fuel Inoperative Or Inaccurate CMTC Fails To Respond To Instrument Panel Dimming; Elapsed Time Inoperative Or Inaccurate; Switch On CMTC Inoperative; Trip Odometer Inoperative Or Inaccurate CMTC Segments Fail To Illuminate CMTC Self-Check Compass/Mini-Trip Computer inoperative Incorrect Ambient Temperature Readings (Generally Plus Or Minus 5 Degrees) Repairing CMTC Displays Double Dash (- -) In Temperature Display |
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| Door & Liftgate Ajar System | Driver's Door Ajar Circuit Open Driver's Door Ajar Circuit Shorted To Ground Passenger's Door Ajar Circuit Open (Without Power Locks) Passenger's Door Ajar Circuit Open (With Power Door Locks) Passenger's Door Ajar Circuit Shorted To Ground (Dakota 2-Door) Passenger's Door Ajar Circuit Shorted To Ground (Dakota 4-Door & Durango) Left Rear Door Ajar Circuit Open Right Rear Door Ajar Circuit Open Liftgate Ajar Circuit Open (Durango) Liftgate Ajar Circuit Shorted To Ground (Durango) |
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| Exterior Lighting | Foglights Will Not Turn Off Foglights Will Not Turn On High Beam Headlights Will Not Turn Off High Beam Headlights Will Not Turn On Low Beam Headlights Will Not Turn Off Low Beam Headlights Will Not Turn On Parking Lights Will Not Turn Off Parking Lights Will Not Turn On |
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| Heating Ventilation Air Conditioning | (4) | ||||||||||||
| Instrument Cluster (5) | All Gauges Not Operating Any Hard-Wired Cluster Indicator Inoperative Any PCI BUS Cluster Indicator Inoperative Instrument Cluster Dimming Fault Low Washer Fluid Indicator Always Off Low Washer Fluid Indicator Always On One Gauge Not Operating Properly PRNDL Indicator Malfunction (4.7L) Seat Belt Indicator Always Off Seat Belt Indicator Always On |
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| Interior Lighting | All Courtesy Lights Inoperative All Interior Lights Inoperative Cargo Lights Inoperative Courtesy Lights Inoperative With Headlight Switch Courtesy Lights Stay On Glove Box Light Inoperative |
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| Overhead Console | Universal Transmitter Dimming Inoperative | ||||||||||||
| Power Door Lock & Remote Keyless Entry Systems (5) | All Doors Except Driver's Fail To Lock & Unlock All Doors Except Driver's Fail To Unlock From Any Switch All Doors Fail To Lock & Unlock From One Switch All Doors Fail To Lock & Unlock From Any Switch All Doors Fail To Lock & Unlock From Both Cylinder Lock Switches All Doors Fail To Lock From Any Switch All Doors Fail To Lock From One Switch All Doors Fail To Unlock From One Switch Automatic (Rolling) Door Locks Inoperative Door Lock Inhibit Inoperative Driver's Door Fails To Lock & Unlock From Any Switch Driver's Door Fails To Unlock From Any Switch One Door Fails To Lock & Unlock From Any Switch Remote Keyless Entry Problem |
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| Vehicle Theft Security System (5) | Alarm Trips On Its Own Driver's Door Does Not Trip VTSS Headlights Fail To Flash When Alarm Is Tripped Horn Fails To Sound When Alarm Is Tripped Left Rear Door Does Not Trip VTSS Liftgate Does Not Trip VTSS (Durango) Passenger's Door Does Not Trip VTSS Right Rear Door Does Not Trip VTSS Unable To Arm Or Disarm With Door Key (6) VTSS Indicator Fails To Illuminate During Bulb Test (6) VTSS Indicator Flashes Following Bulb Test (6) VTSS Indicator Illuminates Constantly Following Bulb Test VTSS Indicator Inoperative VTSS Will Not Arm |
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| Windshield Wiper System (5) | Front Washer Motor Inoperative Front Wiper High Speed Inoperative Front Wiper Intermittent Inoperative Front Wiper Low Speed Inoperative Rear Washer Motor Inoperative Rear Wiper Always On Rear Wiper Inoperative |
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