CM850 Electronic Control System – FAULT CODE 528

Auxiliary Alternate Torque Validation Switch – Data Erratic, Intermittent, or Incorrect


Overview

CODE REASON EFFECT
Fault Code: 528
PID: P093
SPN: 093
FMI: 2
LAMP: Amber
SRT: 

Auxiliary Alternate Torque Validation Switch – Data Erratic, Intermittent, or Incorrect. An error has been detected in the alternate torque switch circuit.

Torque curve setting defaults to default curve.

Alternate Torque Circuit
SMALL | MEDIUM | LARGE

Circuit Description

The torque curve switch circuit allows the operator to select from up to three preprogrammed torque curves using a two- or three-position switch, depending on which the original equipment manufacturer (OEM) has provided.

Component Location

The location of the torque curve switch circuit varies with each OEM and equipment model. Refer to the OEM manual.

Shop Talk

The switch can be monitored for proper operation in INSITE™ electronic service tool. If the switch is changing state correctly on the service tool, then the problem does not lie in the switch circuit. The three position-switch has three states:

  • Position 1 – open
  • Position 2 – closed
  • Position 3 – 1500 ohm resistance

The two position-switch has two states:

  • Position 1 – open
  • Position 2 – closed

Refer to Troubleshooting Fault Code t05-528

Last Modified:  08-Jul-2010