Cruise Control Systems: Testing: Self-Diagnostics

1. Self-diagnostics should be performed when cruise control cancels without driver using normal cancel modes. Self-diagnostic connector is located on right side of fuse box.
2. On Eclipse and Mirage, use Multi-Use Tester (MB991341) or an analog voltmeter for code retrieval. Plug multi-use tester connectors into cigar lighter and self-diagnostic connector. On Colt, Colt 200, Stealth, Summit and 3000GT, use analog voltmeter for code retrieval.
3. On all models, if using voltmeter, connect leads of analog voltmeter between cruise control terminal and ground terminal of diagnostic connector. See Fig 1 or Fig 2 . Read voltmeter needle sweeps to determine trouble code. See Fig 3 .
   NOTE: On all models except Stealth & 3000GT, codes No. 15 and 16 will be displayed whether malfunction is present or not. On Stealth & 3000GT, a code 17 will not cause system to cancel.
4. Once trouble codes have been displayed, read TROUBLE CODE CHART to find appropriate CIRCUIT TEST. See Fig 3 . See appropriate CIRCUIT TESTS. To clear trouble codes, disconnect positive battery cable or go to next step.
5. Turn ignition on. Turn cruise control set switch on. Turn cruise switch on and, in less than one second after cruise switch is turned on, turn resume switch on.
6. Press set switch and brake pedal simultaneously, holding them for more than 5 seconds. Ensure codes are cleared.

Fig 1: Self-Diagnostic Connector Terminal ID (Exc. Stealth & 3000GT)

Courtesy of MITSUBISHI MOTOR CO.

Fig 2: Self-Diagnostic Connector Terminal ID (Stealth & 3000GT)

Courtesy of MITSUBISHI MOTOR CO.

Fig 3: Trouble Code Chart

Courtesy of MITSUBISHI MOTOR CO.