MBE 900 4000 Troubleshooting

Section 22.1 Description of SID 59 – Dual-Speed Fan Low Stage Operation Fault

Section 22.1
Description of SID 59 – Dual-Speed Fan Low Stage Operation Fault

SID 59 indicates that a fault occurred during low stage operation of the electronically controlled dual-speed cooling fan. The fan is linked to the engine PLD-MR through the large 55-pin wiring harness connector. See Figure "Location of Wiring Harness Connectors" .‪

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 1. PLD-MR (Engine Computer)‪

 3. Small 16-Pin Wiring Harness Connector‪

 2. Large 55-Pin Wiring Harness Connector‪

 ‪

Figure 1. Location of Wiring Harness Connectors

The fan fault diagnostic condition is typically:‪

  • Open Circuit (059 05).
  • Short to Ground (059 06).


MBE 900/4000 Troubleshooting Guide - 6SE422
Generated on 10-13-2008

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