Test step	DTC	Scope of test	Test connection			Test condition	Nominal value	Possible cause/remedy
1.0		Ignition control module (N1/3) Voltage supply	2 (A.2)	N1/3	3 (A.3)	Connect socket box to N1/3. Ignition: ON	11 - 14 V	Wiring, 1.1
1.1		Ground connection at (W3) (left front wheelhousing)	W3		N1/3 3 (A.3)	Ignition: ON	11 - 14 V	Ground (W3) (left front wheelhousing)
2.0		Engine 104: Ignition coil (T1) Voltage supply Engine 119: Ignition coil 1 (T1/1) (right cylinder bank) and ignition coil 2 (T1/2) (left cylinder bank) Voltage supply	W3 W3		T1 Cir. 15 T1/1 or T1/2 Cir. 15	Ignition: ON Ignition: ON	11 - 14 V 11 - 14 V	Wiring
3.0	3)	Crankshaft position sensor (L5)	18 18	N1/3 1) N1/3 2)	17 17	Starter: Crank Starter: Crank	Signal, see 24 , Figure 6 and 7. > 0.4 V~	3.1
3.1	3)	Resistance from crankshaft position sensor (L5)	18	N1/3	17	Ignition: OFF	680 - 1200	Wiring, Crankshaft position sensor (L5) 3.2
3.2	3)	Insulation of crankshaft position sensor (L5)	2	N1/3	17	Ignition: OFF Unplug connector (2) for crankshaft position sensor (L5) at ignition control module (N1/3).	>20 k	Crankshaft position sensor (L5), segments on starter ring gear ( 24 , Figure 10).

1) Test with oscilloscope. 2) Test with multimeter only if oscilloscope is unavailable. 3) Diagnostic trouble code is implemented in the ignition control modules only as of production code 946.

4.0		Dwell angle		Engine analyzer		Engine: Start	M104 1 - 30° or 1 - 50 % M119 9 - 49° or 10 - 54 %	3.0 , 4.1 , Ignition control module (N1/3).
4.1		Rest current shut-off Engine 104: Engine 119:	Cir. 1 Cir. 1 Cir. 1 Cir. 1	T1 T1 T1/1 or T1/2 T1/1 or T1/2	Cir. 15 Cir. 15 Cir. 15 Cir. 15	Ignition: ON Engine: Start Ignition: ON Engine: Start	0 V 0.3 - 0.5 V 0 V 0.3 - 0.5 V	Ignition control module (N1/3) and ignition coil (T1) < 0.3 V: Open circuit in wire from ignition coil (T1) to N1/3, > 0.5 V: Ignition coil (T1) Ignition control module (N1/3) and T1/1 (right cylinder bank) or T1/2 (left cylinder bank). < 0.3 V: Open circuit in wire from ignition coil (T1/1 or T1/2) to N1/3, > 0.5 V: Ignition coil (T1/1 or T1/2).
5.0		Ignition coil (T1) or ignition coil 1 (T1/1) (right cylinder bank) Primary voltage Engine 104: T1 Engine 119: T1/1		Engine analyzer Primary pattern measurement range 400 V, duration 100%, voltage signal pick-up connected to ignition coil (T1 or T1/1).		Engine: Start	> 200 - 350 V	Ignition control module (N1/3), Ignition coil (T1 or T1/1).
6.0	Engine 119 only!	Ignition coil 2 (T1/2) (left cylinder bank) Primary voltage		Engine analyzer Primary pattern measurement range 400 V, duration 100%, voltage signal pick-up connected to ignition coil (T1/2).		Engine: Start	> 200 - 350 V	Ignition control module (N1/3), Ignition coil (T1/2).
7.0		Primary voltage limitation		Engine analyzer Secondary overload		Engine: Start Accelerate briefly to 3000 rpm.	see 24 , Figure 27.	Ignition control module (N1/3).
8.0		Ignition coil (T1) or ignition coil 1 (T1/1) (right cylinder bank) Ignition voltage Engine 104: T1 Engine 119: T1/1		Engine analyzer Secondary pattern measurement range 10 kV, duration 100%, voltage signal pick-up connected to ignition coil (T1 or T1/1).		Engine: Start	8 - 20 kV	8.1
8.1		Primary winding of ignition coil (T1) or ignition coil 1 (T1/1) Engine 104: T1 Engine 119: T1/1	Cir. 1	T1 or T1/1	Cir. 15	Ignition: OFF Disconnect wires of circuit 1 and 15 at ignition coil (T1 or T1/1).	0.3 - 0.6	Ignition coil (T1 or T1/1), 8.2
8.2		Secondary winding of ignition coil (T1) or ignition coil 1 (T1/1) Engine 104: T1 Engine 119: T1/1	Cir. 1	T1 or T1/1	Cir. 4	Disconnect wire of circuit 4 from ignition coil (T1 or T1/1).	8 - 13 k	Ignition coil (T1 or T1/1), Ignition control module (N1/3).
9.0	Engine 119 only!	Ignition coil 2 (T1/2) (left cylinder bank) Ignition voltage		Engine analyzer Secondary Pattern, measurement range 10 kV, duration 100%, voltage signal pick-up connected to ignition coil T1/2.		Engine: Start	> 8 kV	9.1
9.1		Primary winding of ignition coil 2 (T1/2)	Cir. 1	T1/2	Cir. 15	Ignition: OFF Disconnect circuits 1 and 15 from the ignition coil.	0.3 - 0.6	Ignition coil (T1/2), 9.2
9.2		Secondary winding of ignition coil 2 (T1/2)	Cir. 1	T1/2	Cir. 4	Disconnect cable for circuit 4 at ignition coil.	8 - 13 k	Ignition coil (T1/2), Ignition control module (N1/3).
10.0		High voltage distributor (S5/3) or left high voltage distributor (S5/5) Ignition voltage Engine 104: S5/3 Engine 119: S5/5		Engine analyzer Secondary Parade, measurement range 20 kV, voltage signal pick-up connected to ignition cable for cylinder 5.		Engine: Start	8 - 20 kV	10.1
10.1		Distributor cap (individual terminals)		Distributor cap inside outside center center outside electrode		Ignition: OFF Remove distributor cap. Unplug ignition cables (Disconnect cables one at a time).	700 - 1300 at each connection	Distributor cap, 10.2
10.2		Rotor		Rotor center point		Distributor cap removed.	700 - 1300	Rotor.
11.0	Engine 119 only!	Right high voltage distributor (S5/6) Ignition voltage		Engine analyzer Secondary Parade, Connect voltage signal pick-up to ignition cable for cylinder 1.		Engine: Start	8 - 20 kV	11.1
11.1		Distributor cap (individual terminals)		Distributor cap inside outside center center outside electrode		Ignition: OFF Remove distributor cap. Unplug ignition cables (Disconnect cables one at a time).	700 - 1300 at each connection	Distributor cap, 11.2
11.2		Rotor		Rotor center point		Distributor cap removed.	700 - 1300	Rotor.
12.0		Spark plugs		Visual inspection.		Ignition: OFF	Electrode gap 0.8 mm (0.032")	Replace as required.