Condition for fault identification

Test condition:

The fault is recognized when the relative rail pressure prior to engine start is >10 bar, and a mixture fault or fuel high-pressure circuit fault appears following the engine start.

Potential problem source(s):

• Defect in wiring harness between DME and rail-pressure sensor
• Defective rail-pressure sensor
• Defect in high-pressure system
• Defective DME

Terminal condition: none

Voltage condition:

• Onboard electrical system voltage between 9 V and 16 V

Temperature condition:

• Engine warmed to normal temp, above 80 °C

Time condition:

• 10 sec. after engine start

Other conditions:

• Engine ON