Spicer TPCS Troubleshooting Guide: Older Systems (ECU's w_Dual Connectors) - Manual (Page 19)

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Diagnostics
Hand­Held Testers
An OTC or MPSI hand­held tester may be used to read and clear fault
codes and to obtain a short description of failures. The tester can
initiate test sequences for controller outputs and can also read system
parameters.
Personal Computer­Based Diagnostics
Personal computer based software provides
the capability of hand­held testers with
enhanced display and data .ogging capability.
A personal computer can display multiple
parameters and provide more comprehensive
descriptions of fault conditions.
Use of a personal computer requires a serial link assembly such as Kent­
Moore’s part number J38351 and Spicer’s Tire Pressure Control System
diagnostic software.
Multimeter
Based upon system schematics and aided by component specific
fault codes, a multimeter can be used to check sensor and solenoid
resistances and to find wiring harness faults. The multimeter can be used
to check the Tire Pressure Control System wiring and component for:
• continuity
• ground
• broken wires
• open circuits
• shorted circuits
• incorrect battery voltage