Gasoline injection and ignition system (ME-SFI) - Diagnosis - Trouble-shooting

AD07.61-P-5000E

Gasoline injection and ignition system (ME-SFI) - Diagnosis - Trouble-shooting

25.11.2019

Engine

112.945 up to 11/30/00 in model 463

 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.

AS00.00-Z-0004-01A

 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.

AS00.00-Z-0035-01A

 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.
Wear protective clothing when handling fuel.

AS47.00-Z-0001-01A

Topical note

Notes on avoiding damage to ignition system

AH15.10-P-0002-01D

Gasoline injection and ignition system (ME-SFI) - Diagnosis - Previous knowledge

AD07.61-P-2000E

Troubleshooting

Complaint

Possible cause

Notes

Remedy

Check engine actual values, menu item

Remedy/test step

Engine slow to start and accelerate

Injection valves actuation and injection duration





Hot film MAF sensor (B2/5)


Coolant temperature sensor (B11/4)

Ignition voltage too low

Unmetered air

3/11

AD07.61-P-6000-18A

AD07.61-P-6000-19A

AD07.61-P-6000-20A

AD07.61-P-6000-21A

AD07.61-P-6000-22A

AD07.61-P-6000-23A

2/11

AD07.61-P-6000-04A

AD07.61-P-6000-05A

1/11

AD07.61-P-6000-08A

–

AD07.61-P-6001-17A

–

Eliminate unmetered air

Engine fails to start

Power supply missing



Malfunction in drive authorization system (DAS)

Fuel pump (FP)

Ignition voltage too low

No compression pressure as oil pressure too high

–

AD07.61-P-6000-01A

AD07.61-P-6000-02A

AD07.61-P-6000-03A

Drive authorization 1/2

AD07.61-P-6000-34A

–

AD07.61-P-7001-03D

–

AD07.61-P-6001-17A

–

Check compression pressure and oil pressure

Engine has rough idling

Injection valves actuation and injection duration





Unmetered air

3/11

AD07.61-P-6000-18A

AD07.61-P-6000-19A

AD07.61-P-6000-20A

AD07.61-P-6000-21A

AD07.61-P-6000-22A

AD07.61-P-6000-23A

–

Eliminate unmetered air

Poor engine output

Lambda sensor LH/RH upstream of catalytic converter




Coolant temperature sensor (B11/4)

Hot film MAF sensor (B2/5)

Variable intake manifold inoperative

Knock control at control stop

8/11

AD07.61-P-6000-10A

AD07.61-P-6000-11A

AD07.61-P-6000-12A

AD07.61-P-6000-13A

1/11

AD07.61-P-6000-08A

2/11

AD07.61-P-6000-04A

–

AD07.61-P-6000-40A

2/11

Knock sensors

Engine runs irregularly (shakes)

Injection valves actuation and injection duration





Injection valves leaky, spray pattern

Lambda sensor LH/RH upstream of catalytic converter




Ignition voltage too low

Compression pressure of one or more cylinders too low

Unmetered air

3/11

AD07.61-P-6000-18A

AD07.61-P-6000-19A

AD07.61-P-6000-20A

AD07.61-P-6000-21A

AD07.61-P-6000-22A

AD07.61-P-6000-23A

–

AD07.61-P-7002-02A

AD07.61-P-7002-03A

8/11

AD07.61-P-6000-10A

AD07.61-P-6000-11A

AD07.61-P-6000-12A

AD07.61-P-6000-13A

–

AD07.61-P-6001-17A

–

Check compression pressure

Eliminate unmetered air

–

Engine runs irregularly (misfire)

Ignition voltage too low

Hot film MAF sensor (B2/5)

–

AD07.61-P-6001-17A

2/11

AD07.61-P-6000-04A

Engine surges after cold start

Unmetered air

–

Eliminate unmetered air

Transition fault in warm-up

Coolant temperature sensor (B11/4)

Hot film MAF sensor (B2/5)

Unmetered air

1/11

AD07.61-P-6000-08A

2/11

AD07.61-P-6000-04A

–

Eliminate unmetered air

Transition fault in warm-up or poor fuel economy

Lambda sensor LH/RH upstream of catalytic converter




Purge control valve (Y58/1) constantly open (jams)

8/11

AD07.61-P-6000-10A

AD07.61-P-6000-11A

AD07.61-P-6000-12A

AD07.61-P-6000-13A

4/11

AD07.61-P-6000-29A

AD07.61-P-6000-30A

Engine jerks

Hot film MAF sensor (B2/5)


Ignition voltage too low

Lambda sensor LH/RH upstream of catalytic converter

2/11

AD07.61-P-6000-04A

AD07.61-P-6000-05A

–

AD07.61-P-6001-17A

8/11

AD07.61-P-6000-10A

AD07.61-P-6000-11A

AD07.61-P-6000-12A

AD07.61-P-6000-13A

Electronic accelerator is in limp-home function

Set value potentiometer in pedal value sensor


Actual value potentiometer in actuator

5/11

AD07.61-P-6002-08A

AD07.61-P-6002-09C

5/11

AD07.61-P-6002-03A