Wiring diagram PEC gas injection and ignition system · ad0754d6000a · Mercedes-Benz WIS

AD07.54-D-6000A

Wiring diagram PEC gas injection and ignition system

25.11.2019

Engine	111.979 in model 902.0, 903.0, 904.0
	with code MS7 (NGT (Natural-Gas Technology) Sprinter)

 Danger	Risk of explosion due to escaping combustible gas or overheating of gas cylinders.Risk of injury caused by burns to skin and eyes. Risk of frostbite to body parts caused by escaping gas and by touching components near the valves when emptying gas cylinders. Risk of poisoning or suffocation caused by inhaling gas.	Remove any sources of ignition. Protective clothing, safety gloves and safety glasses must always be worn. Ensure that the work area is adequately ventilated. When working on vehicles at ambient temperatures over 60 °C, all gas cylinders must be removed.	AS00.00-Z-0018-01A
 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
	Diagnosis of gas injection and ignition system, prerequisites		AD07.54-D-2000A
	Connection scheme of socket box for testing of the electrical system for gas injection and ignition system (pressurized engine control)	Only remove control unit couplings when the ignition is OFF	AD07.54-D-2000-06A
	Remove/install lamp unit		AR82.10-D-4730B
	Battery voltage 11 to 14 volt. HHT connected to diagnostics connection
	PEC system complete (all connectors inserted)
	The cables, plugs and connectors are taken into account during the test with the HHT and must possibly in the case of a fault display be separately checked again for an open circuit, good contact and correct connection according to the respectively valid electrical circuit diagram.
	Use of test and test equipment: Connect/disconnect secondary measurement sensor at corresponding ignition line and trigger clamp at cylinder 1 only in the case of a stopped engine and switched off ignition


	Check
1	Coolant temperature sensor electrical test, gas injection and ignition system, PEC		AD07.54-D-6000-01A
2	Intake air temperature sensor electrical test, gas injection and ignition system, PEC		AD07.54-D-6000-02A
3	PEC gas injection and ignition system electrics check intake manifold pressure control unit		AD07.54-D-6000-03A
4	PEC gas injection and ignition system electrics check throttle valve adjusting motor		AD07.54-D-6000-28A
5	PEC gas injection and ignition system electrics check throttle valve actual value potentiometer		AD07.54-D-6000-05A
6	PEC gas injection and ignition system electrics check drive actual value potentiometer		AD07.54-D-6000-06A
7	PEC gas injection and ignition system electrics check idle speed control		AD07.54-D-6000-07A
8	O2PEC gas injection and ignition system electrics check lambda sensor		AD07.54-D-6000-08A
9	O2PEC gas injection and ignition system electrics check lambda sensor heater current		AD07.54-D-6000-09A
10	PEC gas injection and ignition system electrics check lambda control		AD07.54-D-6000-10A
11	PEC gas injection and ignition system electrics check cylinder 1 and 4 injection valve		AD07.54-D-6000-11A
12	PEC gas injection and ignition system electrics check cylinder 2 and 3 injection valve		AD07.54-D-6000-12A
13	PEC gas injection and ignition system electrics check idle self-adjustment		AD07.54-D-6000-13A
14	PEC gas injection and ignition system electrics check partial load factor self-adjustment		AD07.54-D-6000-14A
15	PEC gas injection and ignition system electrics check ignition output stage 1 cylinder 1 and 4		AD07.54-D-6000-15A
16	PEC gas injection and ignition system electrics check ignition output stage 2 cylinder 2 and 3		AD07.54-D-6000-16A
17	PEC gas injection and ignition system electrics check crankshaft position sensor		AD07.54-D-6000-17A
18	PEC gas injection and ignition system electrics check (TN rpm signal) control unit		AD07.54-D-6000-19A
19	PEC gas injection and ignition system electrics check speed signal		AD07.54-D-6000-20A
20	PEC gas injection and ignition system electrics check fuel pump relay		AD07.54-D-6000-21A
21			AD07.54-D-6000-23A
22	PEC gas injection and ignition system electrics check control unit		AD07.54-D-6000-24A
23	PEC gas injection and ignition system electrics check immobilizer		AD07.54-D-6000-25A
24	PEC gas injection and ignition system electrics check exhaust gas flap		AD07.54-D-6000-26A
25	PEC gas injection and ignition system electrics check gas pressure sensor		AD07.54-D-6000-04A
26	PEC gas injection and ignition system electrics check gas temperature sensor		AD07.54-D-6000-22A

Referenced documents

ad0754d200006a Connection scheme of socket box for testing of the electrical system for gas injection and ignition system (pressurized engine control)
ad0754d2000a Diagnosis of gas injection and ignition system, prerequisites
ad0754d2000a
ar8210d4730b Remove/install headlamp unit
as0000z001801a Risk of explosion due to escaping combustible gas or overheating of gas cylinders.Risk of injury caused by burns to skin and eyes. Risk of frostbite to body parts caused by escaping gas and by touching components near the valves
as0000z003501a Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)