Spicer TIMS (Tire Inflation and Monitor System) for Trailers Installation Guide - Manual (Page 33)

30
Troubleshooting
Tr
oubleshooting
Warning Lamp Status Chart (Normal
Mode)
Warning Lamp Status Chart (Program
Mode)
ECU in Normal Operating Mode
Warning Lamp Status System Condition
2 seconds ON at power-up* Normal operation (lamp check)
Multiple flashes at power-up Active service code stored in ECU
Continuous ON Low pressure in one or more tires
Substantial air line leak
Failure to depressurize the system
No tire pressure target programmed (new ECU)
218UX023
Note: If the vehicle is powered and the supply air tank pressure is not at a minimum of 90 psi the system will not check or
inflate the tires.
*Note: The maintenance system utilizes the trailer's blue circuit for power. Some early model tractors do not power this circuit
resulting in no power to the system.
ECU in Learn Mode
Warning Lamp Status System Condition
2 seconds ON twice when learn mode is selected Acknowledges that the learn mode has been
activated
1/2 second ON every 10 seconds
pressure to determine tire pressure target
5 seconds ON, then multiple 1/2 second ON Acknowledges that a tire pressure target has
flashes separated by 2 seconds OFF been determined by the ECU (each series of
flashes represents 1 digit of new tire pressure
5 flashes = target of 95 psig) Note: a zero is
indicated by 10 flashes.
218UX024
Learn mode active - inadequate supply
target - example: 9 flashes, 2 sec. pause,