MBE 900 4000 Troubleshooting

Section 31.1 Description of SID 248 – Pld-Mr DDEC-VCU Datalink Fault

Section 31.1
Description of SID 248 – Pld-Mr DDEC-VCU Datalink Fault

SID 248 indicates that a fault has occurred in the PLD-MR DDEC-VCU datalink.‪

The diagnostic condition is typically:‪

  • Propriety Datalink Fault (248 02)
  • DDEC-VCU Internal Error Fault (248 14)

See Figure "Location of DDEC-VCU and Wiring Harness Connectors" for location of wiring harness connectors. See Figure "Connector Positions on DDEC-VCU" for connector positions on DDEC-VCU. See Figure "PLD-MR Engine Bulkhead Schematic — Business Class" and see Figure "PLD-MR Engine Bulkhead Schematic — Acterra" for wiring schematics.‪

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 1. Passenger-Side Dash‪

 4. 18-Pin Harness Connector (VC3)‪

 2. DDEC-VCU‪

 5. 21-Pin Harness Connector (VC1)‪

 3. 15-Pin Harness Connector (VC4)‪

 ‪

Figure 1. Location of DDEC-VCU and Wiring Harness Connectors

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 1. 21-PinPin DDEC-VCU Connector (VC1)‪

 3. 15-Pin DDEC-VCU Connector (VC4)‪

 2. 18-Pin DDEC-VCU Connector (VC3)‪

 4. DDEC-VCU‪

Figure 2. Connector Positions on DDEC-VCU

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Figure 3. PLD-MR Engine Bulkhead Schematic — Business Class

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Figure 4. PLD-MR Engine Bulkhead Schematic — Acterra


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

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