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Self-diagnosis
Readout specifications for general vehicle inspection
Display group 00 during idling (warm engine, coolant temperature not below +85 °C)
- Engine codes: AGR, ALH, AHF and ASV
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Read measured value block 0
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◂Indicated on display
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42
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50
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0
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20
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90
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201
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64
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153
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127
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83
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Intake air mass: 70...110 OK
▪ If outside tolerance => display group 03, Page 01-81
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Fuel temperature: no specification
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Intake manifold temperature: no specification
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Coolant temperature: 80...51 OK
▪ > 80: run engine until warm
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Ambient air pressure: no specification
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Boost pressure: Ignore
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Injection quantity: 10...30 OK
▪ If outside tolerance => display group 01, Page 01-73
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Accelerator pedal position: 0
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Commencement of injection: 20...60 OK
▪ If outside tolerance=> display group 04, Page 01-76
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Idling speed: 41...44 OK
▪ If outside tolerance => display group 02, Page 01-78
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Display group 00 at full throttle (test drive in 3rd or 4th gear, coolant temperature not below +85 °C)
- engine codes AGR and ALH
Important The fault reader must be secured on the rear seat and operated from this position. Observe the safety precautions applicable to test drives .
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Read measured value block 0
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◂Indicated on display
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186
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225
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255
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186
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186
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201
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64
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138
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175
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233
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Intake air mass: > 210 OK
▪ < 210: => Display group 10, page 01-85
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Fuel temperature: no specification
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Intake manifold temperature: no specification
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Coolant temperature: 80...51 OK
▪ > 80: run engine until warm
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Ambient air pressure: Ignore
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Boost pressure: 171...191 OK
▪ If outside tolerance => display group 11, Page 01-87
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Injection quantity: 170...195 (injection quantity at full throttle) OK
▪ 125: Emergency injection quantity, system error detected => interrogate fault memory, page 01-6
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Accelerator pedal: 255 (fully depressed)
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Commencement of injection: 180...245 (depending on engine speed)
▪ If outside tolerance=> display group 04, Page 01-77
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Engine speed: 160...190 (do not exceed 4000 rpm; engine speed is controlled)
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Display group 00 at full throttle (test drive in 3rd or 4th gear, coolant temperature not below +85 °C)
- Engine codes AHF and ASV
Important The fault reader must be secured on the rear seat and operated from this position. Observe the safety precautions applicable to test drives => Page 23-1.
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Read measured value block 0
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◂Indicated on display
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186
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225
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255
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199
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190
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201
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64
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138
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175
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255
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Intake air mass: greater than 240 OK
▪ Less than 240 => display group 10, Page 01-86
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Fuel temperature: no specification
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Intake manifold temperature: no specification
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Coolant temperature: 80...51 OK
▪ Above 80 Run engine until warm
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Ambient air pressure: Ignore
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Boost pressure: 180...200 OK
▪ If outside tolerance => display group 11, Page 01-88
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Injection quantity: 190...210 (injection quantity at full throttle) OK
▪ 125: Emergency injection quantity, system error detected => interrogate fault memory, page 01-6
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Accelerator pedal: 255 (fully depressed)
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Commencement of injection: 180...245 (depending on engine speed)
▪ If outside tolerance=> display group 04, Page 01-77
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Engine speed: 160...190 (do not exceed 4000 rpm; engine speed is controlled)
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