Danger | Risk of death. Death may occur if body parts are drawn into rotating vehicle parts. | Do not insert your hand into rotating parts. Wear closed and snug-fitting work clothes. Secure area of rotating vehicle components against unauthorized access. | |
Danger | Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC) | Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines. | |
Danger | Risk of explosion caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel as well as risk of injury to eyes and skin caused by contactwith fuel. | No fires, sparks, open flames or smoking. Pour fuels into suitable and appropriately marked containers only. | |
Connecting and using test equipment | |||
Gasoline injection and ignition system (ME-SFI) - Diagnosis - Previous knowledge | |||
ME-SFI fuel injection and ignition system (ME), DTC memory | Fault codes from P0000 to P0299 | ||
Fault codes from P0300 to P0699 | |||
Fault codes from P0700 to P1747 | |||
| When disconnecting the couplings on the ME-SFI [ME] control unit, disconnect the center coupling first and reconnect the center coupling D last when reconnecting. | ||
| Measuring instrument/test connection column: | ||
| The numbers entered in brackets, such as e.g. in 1.0 (2A) mean: | ||
| A = coupling A in the wiring diagram | ||
| 2 = connection 2 in the wiring diagram | ||
| Ignition OFF | ||
| Connect test wiring harness with contact box to ME-SFI [ME] control unit (N3/10) according to connection scheme. Plug with red marking is not yet required at present, as no function is available in the ME-SFI [ME] control unit as yet. | ||
| Check | ||
1 | Pedal value sensor signal, electrics test, idle speed control/electronic accelerator ME-SFI | Signal 1 | |
2 | Pedal value sensor signal, electrics test, idle speed control/electronic accelerator ME-SFI | Signal 2 | |
3 | Throttle valve actuator signal, electrics test, idle speed control/electronic accelerator ME-SFI | ||
4 | Throttle valve actuator actuation, electrics test, idle speed control/electronic accelerator ME-SFI | ||
5 | N detection, electrics test, idle speed control/electronic accelerator ME-SFI | With manual transmission | |
6 | Clutch pedal switch, electrics test, idle speed control/electronic accelerator ME-SFI | With manual transmission | |
7 | Backup light switch, electrics test, idle speed control/electronic accelerator ME-SFI | With manual transmission |