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. | |
Topical note | Notes on avoiding damage to ignition system | ||
Connecting hand-held tester (HHT), reading fault memory | |||
Gasoline injection and ignition system (ME-SFI) - Diagnosis - Previous knowledge | |||
| Reading out the fault code with the pulse counter is not possible | ||
| Characters for USA vehicles for actuation of the CHECK-ENGINE indicator lamp | ||
| Characters for EURO3 vehicles for actuation of the engine diagnosis indicator lamp (displayed as in the HHT) | ||
| The indicator lamp only lights up if an emissions-relevant fault was already stored in the last driving cycle (exception: Misfires "harmful to the CAT", indicator lamp lights up immediately). | ||
| Ignition: ON | ||
| Check, regulate engine, see: Engine DMAN | ||
Fault memory | |||
Fault code | Fault text | Possible cause/note | Remedy |
No fault code | No fault detected | Depending on complaint, perform complete ME-SFI electrics test | |
112.942 in MODEL 163.154 up to 31.5.98 | |||
| A misfire | ||
Compression pressure | |||
Misfire fault code description ME-SFI | |||
| A misfire cylinder 1 | ||
Compression pressure | |||
Misfire fault code description ME-SFI | |||
| A misfire cylinder 2 | ||
Compression pressure | |||
Misfire fault code description ME-SFI | |||
| A misfire cylinder 3 | ||
Compression pressure | |||
Misfire fault code description ME-SFI | |||
| A misfire cylinder 4 | ||
Compression pressure | |||
Misfire fault code description ME-SFI | |||
| A misfire cylinder 5 | ||
Compression pressure | |||
Misfire fault code description ME-SFI | |||
| A misfire cylinder 6 | ||
Compression pressure | |||
Misfire fault code description ME-SFI | |||
| Right knock sensor | Line connector | |
Knock sensor | |||
Knock sensor fault code description, ME-SFI | |||
| Left knock sensor | Line connector | |
Knock sensor | |||
Knock sensor fault code description, ME-SFI | |||
| Crankshaft position sensor (L5) | ||
Crankshaft position sensor fault code description, ME-SFI | |||
| Camshaft Hall sensor (B6/1) | ||
Camshaft Hall sensor fault code description, ME-SFI | |||
| Angular deviation of camshaft relative to crankshaft | Check basic setting for camshafts | |
| Exhaust gas recirculation malfunction (function chain) | ||
Exhaust gas recirculation malfunction (function chain) fault code description, ME-SFI | |||
| Air injection malfunction (function chain) | with CODE (925) low-pollutant EURO3 | |
Air injection malfunction (function chain) fault code description, ME-SFI | |||
| Right catalytic converter efficiency too low | Right catalytic converter | |
Catalytic converter efficiency too low fault code description, ME-SFI | |||
| Left catalytic converter efficiency too low | Left catalytic converter | |
Catalytic converter efficiency too low fault code description, ME-SFI | |||
| Purge system leaky (function chain) | ||
| |||
Purge system leaky (function chain) fault code description, ME-SFI | | ||
| Purging switchover valve (Y58/1) | ||
Purge system leaky (function chain) fault code description, ME-SFI | | ||
| Purge system slightly leaky | | |
Purge system leaky (function chain) fault code description, ME-SFI | | ||
| Purging switchover valve (Y58/1) | ||
Purge control valve fault code description, ME-SFI | |||
| A activated charcoal canister shutoff valve | | |
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Activated charcoal canister shutoff valve fault code description, ME-SFI | | ||
| A tank pressure sensor (B4/3) electrical fault | | |
Activated charcoal canister clogged | |||
Tank pressure sensor fault code description, ME-SFI | | ||
| Purge system highly leaky or | | |
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Purge system leaky (function chain) fault code description, ME-SFI | | ||
| Fuel level sensor | Read out IC | |
Misfire fault code description ME-SFI | |||
| A front left speed signal | Check ASR Suspension DMAN, Reg. 9 | |
Speed signal fault code description, ME-SFI | |||
| Idle speed control implausible | Signal 1 | |
Signal 2 | |||
Idle speed control fault code description, ME-SFI | |||
| Power supply at ME-SFI [ME] control unit (N3/10) | ||
Control unit power supply fault code description, ME-SFI | |||
| Cruise control switch variable (S40/4) | ||
| CAN of ESP | ||
CAN malfunctioning fault code description, ME-SFI | |||
| A ME-SFI [ME] control unit (N3/10) | N3/10 | |
| ME-SFI [ME] control unit (N3/10) | N3/10 |