Engine Code(s): AAH 28 - Ignition/Glo
Engine Code(s): AAH 28 - Ignition/Glo
Engine Code(s): AAH 28 - Ignition/Glo
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Motronic fuel injection and ignition system, component layoutx-ebahn:///C:/Program%20Files/eBahn/data/AUDI-C-C4-FU01.ebn/AUDI/C/C4/Repair...Page 1 of 726/05/2012Audi > C4 > 1992 - 19982.8 Liter V6 2V Fuel Injection & <strong>Ignition</strong> (MMS 100/200), <strong>Engine</strong> <strong>Code</strong>(s):<strong>AAH</strong><strong>28</strong> - <strong>Ignition</strong>/<strong>Glo</strong>w plug systemMotronic fuel injection and ignition system, component layout- - - <strong>Engine</strong> Control Module (ECM) -J192-Not shownLocated in passenger-side footwell, in electronics box under carpeting => RepairGroup 011 - Harness connectors for:For Oxygen Sensor (O2S) heater -Z19-
Motronic fuel injection and ignition system, component layoutx-ebahn:///C:/Program%20Files/eBahn/data/AUDI-C-C4-FU01.ebn/AUDI/C/C4/Repair...Page 2 of 726/05/2012Heater for heated oxygen sensor -G39-, right bankBlack 2-pin connectorB - For <strong>Ignition</strong> coilsBattery positive voltage (B+) supplyWhite connectorC - For Heated Oxygen Sensor (HO2S) -G39-Signal wireUnder connector holder on bulkheadD - For Knock Sensor (KS) 1 -G61-Blue connector
Motronic fuel injection and ignition system, component layoutx-ebahn:///C:/Program%20Files/eBahn/data/AUDI-C-C4-FU01.ebn/AUDI/C/C4/Repair...Page 3 of 726/05/2012E - For <strong>Engine</strong> Speed (RPM) sensor -G<strong>28</strong>-Gray connectorF - For Crankshaft Position (CKP) sensor -G4-Black connector2 - Power Output Stage -N122-For ignition coilsA - Signal wiresFrom <strong>Engine</strong> Control Module (ECM)Brown 4-pin connectorB - <strong>Ignition</strong> coil primary circuit connections3 - Throttle Position (TP) sensor -G69-
Motronic fuel injection and ignition system, component layoutx-ebahn:///C:/Program%20Files/eBahn/data/AUDI-C-C4-FU01.ebn/AUDI/C/C4/Repair...Page 4 of 726/05/2012With integrated Closed Throttle Position (CTP) switch -F60-4 - Connectors for:A - For Heated Oxygen Sensor 2 -G108-Signal wireB - For Oxygen Sensor (O2S) 2 heater -Z<strong>28</strong>-Heater for heated oxygen sensor 2 -G108-, left bankBlack 2-pin connectorC - For Knock Sensor (KS) 2 -G66-Blue connector5 - EGR temperature sensor -G98-
Motronic fuel injection and ignition system, component layoutx-ebahn:///C:/Program%20Files/eBahn/data/AUDI-C-C4-FU01.ebn/AUDI/C/C4/Repair...Page 6 of 726/05/201213 - Fuel Injectors14 - <strong>Ignition</strong> coils<strong>Ignition</strong> coil 1 -N-<strong>Ignition</strong> coil 2 -N1<strong>28</strong>-<strong>Ignition</strong> coil 3 -N158-15 - Ground (GND) connectionOn intake manifold16 - Idle Air Control (IAC) valve -N71-17 - Fuel pressure regulator18 - Heated Oxygen Sensor (HO2S) -G39-
Motronic fuel injection and ignition system, component layoutx-ebahn:///C:/Program%20Files/eBahn/data/AUDI-C-C4-FU01.ebn/AUDI/C/C4/Repair...Page 7 of 726/05/201219 - Mass Air Flow (MAF) sensor -G70-With CO fuel trim potentiometer20 - EVAP canister purge regulator valve -N80-21 - A - EGR vacuum regulator solenoid valve -N18-B - Intake manifold change-over valve -N156-22 - Knock Sensor (KS) 1 -G61-23 - Ground (GND) connectionOn right engine mount
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