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EPS Control Module Inspection

  1. Attach the tester lead to the underside of the EPS control module connector and inspect the voltage according to the terminal voltage table (reference).

Terminal Voltage Table (Reference) 

G13558929Courtesy of MACK TRUCKS, INC.

-: Not applicable

VOLTAGE SPECIFICATION

Terminal Signal name Connected to Measured item Measured terminal (measurement condition) Voltage (V) Inspection item(s)
1A Battery power supply Battery Voltage Under any condition B+
  • Wiring harness (1A-battery)
  • Fuse (F19 60A)
1B Ground Ground point Voltage Under any condition Approx. 0
  • Ground point
  • Wiring harness (1B-ground point)
2A CAN_L - Perform DTC inspection -
2B - - - - - -
2C CAN_H - Perform DTC inspection -
2D - - - - - -
2E - - - - - -
2F Ignition power supply IG1 relay No. 2 Voltage Ignition ON (engine off or on) B+
  • Wiring harness (2F-IG1 relay No. 2-battery)
  • Fuse (F48 7.5A)
Ignition off 1 or less