Each month in Diagnose This! we present a real-life service scenario with clues as to what the ultimate diagnosis was. If you think you know the answer, be the first to e-mail [email protected] with the correct response for free Truck Parts & Service merchandise. The answer will be revealed in a future issue of the magazine.
Vehicle: 2005 International 4400 tractor
Key components: International HT570 engine, Spicer 7-speed manual transmission, Bendix EC30 antilock braking system
Scenario: ABS lamp stays steadily lit.
Clues:
- Blink code 97 in memory (RR modulator lock timeout).
- Testing of valves, sensors and modulators reveals no faults.
- Clearing codes extinguishes lamp for short period of time.
- Lamp lights again within 1000 miles.
Damon Russell has been involved in the truck repair industry all his life. He is ASE Master certified in all six categories, holding 46 ASE certificates in all. He has been actively working to improve the trade by working with his local trade school’s advisory boards, judging SkillsUSA competitions, participating in evaluating NATEF program standards and ASE test writing workshops. He is also an active member of iATN.
Damon and his wife Kathy own and operate Fleet Guardian LLC in Bridgewater N.J., a small five bay garage serving the needs of local and national commercial fleets of light-, medium- and heavy-duty trucks since 1992.
