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Diagnostic Manual, Engines, Volume 4

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9.4 ME - SFI (ME2.0) > 24 Electrical Test Program - Ignition System Test

Electrical Test Program - Ignition System Test

WARNING!
Risk of severe injury when touching ignition parts which produce high voltages. Do not touch ignition components.
Persons with heart pacemakers are not to perform repairs on this type of ignition system.

Preparation for Test:
1. Review section 0,
2. Review

11 ,

21 ,

22 entirely,
3. Readout DTC memory,
4. Ignition: OFF,
5. Connect test cable with socket box to N3/10.

Test scope Test connection

Test condition Nominal value Possible cause/remedy

1.0
Engine control
module (N3/10)
Voltage supply
circuit 30

3
(3a)
N3/10

12
(4B)

Ignition: ON 11 - 14 V 1.1 - 1.2

1.1 Ground wire N3/10

3
(3a)

7
(7a)

112
(8F)

119
(15F)

X11/4
2

X11/4
2

X11/4
2

X11/4
2

Ignition: ON 11 - 14 V Wiring,
Model 208/210:
(electronics ground - component compartment - right) (W16/6),
Model 163:
(component compartment) (W16),
Model 129:
(control module box/module box) (W27).
Model 463:
Ground, right A-pillar (w29/2),
Ground, bracket control module (W27).

1.2 Voltage supply
circuit 30
X11/4
1

N3/10

12
(4B)

Ignition: ON
Model 163:
Connect 16-pole test cable to socket 4. 11 - 14 V Wiring,
Passenger-side fuse and relay module box (K40/4).
Fuse box (F1),
Base module (BM) (N16/1).

2.0
Engine control
module (N3/10)
Voltage supply
circuit 87

8
(8a)
N3/10

2
(2a)

Ignition: ON 11 - 14 V 2.1 - 2.2

2.1 Electronics ground N3/10

8
(8a)

X11/4
2

Ignition: ON 11 - 14 V Wiring,
Model 208/210:
(electronics ground - component compartment - right) (W16/6),
Model 163:
(component compartment) (W16),
Model 129:
(control module box/module box) (W27).
Model 463:
Ground, right A-pillar (W29/2)

2.2 Voltage supply
circuit 87
X11/4
1

N3/10

2
(2a)

Ignition: ON
Model 163:
Connect 16-pole test

Ignition: OFF
11 - 14 V

< 1 V Wiring,
Passenger-side fuse and relay module box (K40/4).
Fuse box (F1),
Base module (BM) (N16/1),
(F1f22)

3.0 Ignition coil (T1/1)
Cylinder 1
Voltage supply
Primary coil a

Voltage supply
Primary coil b

3
(3a)

3
(3a)

N3/10

N3/10

124
(20f)

125
(21f)
Ignition: ON 11 - 14 V Wiring,
Fuses:
Model 208/210:
Fuse, ignition coils (K40/4f6),
Model 129:
Fuse 34 (F1f34),
Model 163:
Fuse 26 (F1f26),
Ignition coil (T1/1).
Model 463:
Fuse F1f25
Ignition coil (T1/1).

4.0 Ignition coil (T1/2)
Cylinder 2
Voltage supply
Primary coil a

Voltage supply
Primary coil b

3
(3a)

3
(3a)
N3/10

N3/10

123
(19f)

122
(18f)

Ignition: ON 11 - 14 V Wiring,
Fuses:
Model 208/210:
Fuse, ignition coils (K40/4f6),
Model 129:
Fuse 34 (F1f34),
Model 163:
Fuse 26 (F1f26),
Ignition coil (T1/2),
Model 463:
Fuse F1f25
Ignition coil (T1/2).

5.0 Ignition coil (T1/3)
Cylinder 3
Voltage supply
Primary coil a

Voltage supply
Primary coil b

3
(3a)

3
(3a)
N3/10

N3/10

109
(5f)

108
(4f)

Ignition: ON 11 - 14 V Wiring,
Fuses:
Model 208/210:
Fuse, ignition coils (K40/4f6),
Model 129:
Fuse 34 (F1f34),
Model 163:
Fuse 26 (F1f26),
Ignition coil (T1/3),
Model 463:
Fuse F1f25
Ignition coil (T1/3).

6.0 Ignition coil (T1/4)
Cylinder 4
Voltage supply
Primary coil a

Voltage supply
Primary coil b

3
(3a)

3
(3a)
N3/10

N3/10

110
(6f)

111
(7f)

Ignition: ON 11 - 14 V Wiring,
Fuses:
Model 208/210:
Fuse, ignition coils (K40/4f6),
Model 129:
Fuse 34 (F1f34),
Model 163:
Fuse 26 (F1f26),
Ignition coil (T1/4)
Model 463:
Fuse F1f25
Ignition coil (T1/4).

7.0 Ignition coil (T1/5)
Cylinder 5
Voltage supply
Primary coil a

Voltage supply
Primary coil b

3
(3a)

3
(3a)
N3/10

N3/10

117
(13f)

118
(14f)

Ignition: ON 11 - 14 V Wiring,
Fuses:
Model 208/210:
Fuse, ignition coils (K40/4f6),
Model 129:
Fuse 34 (F1f34),
Model 163:
Fuse 26 (F1f26),
Ignition coil (T1/5),
Model 463:
Fuse F1f25
Ignition coil (T1/5).

8.0 Ignition coil (T1/6)
Cylinder 6
Voltage supply
Primary coil a

Voltage supply
Primary coil b

3
(3a)

3
(3a)
N3/10

N3/10

121
(17f)

120
(16f)

Ignition: ON 11 - 14 V Wiring,
Fuses:
Model 208/210:
Fuse, ignition coils (K40/4f6),
Model 129:
Fuse 34 (F1f34),
Model 163:
Fuse 26 (F1f26),
Ignition coil (T1/6),
Model 463:
Fuse F1f25
Ignition coil (T1/6).

9.0 Ignition coil (T1/7)
Cylinder 7
Voltage supply
Primary coil a

Voltage supply
Primary coil b

3
(3a)

3
(3a)
N3/10

N3/10

116
(12f)

115
(11f)

Ignition: ON 11 - 14 V Wiring,
Fuses:
Model 208/210:
Fuse, ignition coils (K40/4f6),
Model 129:
Fuse 34 (F1f34),
Model 163:
Fuse 26 (F1f26),
Ignition coil (T1/7),
Model 463:
Fuse F1f25
Ignition coil (T1/7).

10.0 Ignition coil (T1/8)
Cylinder 8
Voltage supply
Primary coil a

Voltage supply
Primary coil b

3
(3a)

3
(3a)
N3/10

N3/10

114
(10f)

113
(9f)

Ignition: ON 11 - 14 V Wiring,
Fuses:
Model 208/210:
Fuse, ignition coils (K40/4f6),
Model 129:
Fuse 34 (F1f34),
Model 163:
Fuse 26 (F1f26),
Ignition coil (T1/8),
Model 463:
Fuse F1f25
Ignition coil (T1/8).

11.0
CKP sensor (L5)

Signal

Voltage

93
(37e)

93
(37e)
N3/10

N3/10

94
(38e)

94
(38e)

Test with oscilloscope.
Starter: Crank
Engine: at Idle

Test with multimeter only
if oscilloscope is
unavailable.
Starter: Crank

Engine: at Idle Signal: see
Figure 1 and 3.

> 2.0 V~

> 5 V~
Voltage increases with increasing rpm.
11.1 ,
Teeth on starter ring gear.

11.1 Resistance of CKP
sensor (L5)

93
(37e)
N3/10

94
(38e)

Ignition: OFF
Unplug connector E on engine control
module (N3/10).

(at 20°C):
600 - 1200
Wiring,
L5

12.0
Camshaft Hall-effect sensor (B6/1)
Hall-effect signal

Voltage

95
(39e)

96
(40e)
N3/10

N3/10

96
(40e)

2
(2a)

Test with oscilloscope.
Engine: at Idle

Test with multimeter only
if oscilloscope is
unavailable.
Engine: at Idle Signal: see
Figure 2 and 3.

1.2 - 2.2 V
Value changes. 12.1 ,
Wiring,
B6/1

12.1 Voltage supply to camshaft Hall-effect sensor (B6/1)
1

B6/1

3

Ignition: ON
Disconnect connector from Hall-effect sensor (B6/1) and test directly on sockets 1 (brown/green) and 3 (red/blue) of connector.
11 - 14 V Wiring.

13.0

Primary voltage
Ignition coil (T1/1),
Cylinder 1
Primary circuit a

Primary circuit b

124
(20f)

125
(21f)
N3/10

N3/10

2
(2a)

2
(2a)

Test connection Note:
Individual primary pattern
Range: 40 V
Duration: 5 millisec.

Starter: Crank
200 - 350 V 13.1

13.1 Primary winding of T1/1
Primary circuit a and b

124
(20f)

N3/10

125
(21f)
Ignition: OFF

0.9 - 1.6
The resistance of a single coil at 20° C is approx. 0.6 .
Wiring,
T1/1

14.0

Primary voltage
Ignition coil (T1/2),
Cylinder 2
Primary circuit a

Primary circuit b

123
(17f)

122
(18f)
N3/10

N3/10

2
(2a)

2
(2a)

Test connection Note:
Individual primary pattern
Range: 40 V
Duration: 5 millisec.

Starter: Crank
200 - 350 V 14.1

14.1 Primary winding of T1/2
Primary circuit a and b

122
(18f)

N3/10

123
(19f)
Ignition: OFF

0.9 - 1.6
The resistance of a single coil at 20° C is approx. 0.6 .
Wiring,
T1/2

15.0

Primary voltage
Ignition coil (T1/3),
Cylinder 3
Primary circuit a

Primary circuit b

109
(5f)

108
(4f)
N3/10

N3/10

2
(2a)

2
(2a)

Test connection Note:
Individual primary pattern
Range 40 V
Duration 5 millisec.

Starter: Crank
200 - 350 V 15.1

15.1 Primary winding of T1/3
Primary circuit a and b

108
(4f)

N3/10

109
(5f)
Ignition: OFF

0.9 - 1.6
The resistance of a single coil at 20° C is approx. 0.6 .
Wiring,
T1/3

16.0

Primary voltage
Ignition coil (T1/4),
Cylinder 4
Primary circuit a

Primary circuit b

110
(6f)

111
(7f)
N3/10

N3/10

2
(2a)

2
(2a)

Test connection Note:
Individual primary pattern
Range: 40 V
Duration: 5 millisec.

Starter: Crank
200 - 350 V 16.1

16.1 Primary winding of T1/4
Primary circuit a and b

110
(6f)

N3/10

111
(7f)
Ignition: OFF

0.9 - 1.6
The resistance of a single coil at 20° C is approx. 0.6 .
Wiring,
T1/4

17.0

Primary voltage
Ignition coil (T1/5),
Cylinder 5
Primary circuit a

Primary circuit b

117
(13f)

118
(14f)
N3/10

N3/10

2
(2a)

2
(2a)

Test connection Note:
Individual primary pattern
Range: 40 V
Duration: 5 millisec.

Starter: Crank
200 - 350 V 17.1

17.1 Primary winding of T1/5
Primary circuit a and b

117
(13f)

N3/10

118
(14f)
Ignition: OFF

0.9 - 1.6
The resistance of a single coil at 20° C is approx. 0.6 .
Wiring,
T1/5

18.0

Primary voltage
Ignition coil (T1/6),
Cylinder 6
Primary circuit a

Primary circuit b

121
(17f)

120
(16f)
N3/10

N3/10

2
(2a)

2
(2a)

Test connection Note:
Individual primary pattern
Range: 40 V
Duration: 5 millisec.

Starter: Crank
200 - 350 V 18.1

18.1 Primary winding of T1/6
Primary circuit a and b

120
(16f)

N3/10

121
(17f)
Ignition: OFF

0.9 - 1.6
The resistance of a single coil at 20° C is approx. 0.6 .
Wiring,
T1/6

19.0

Primary voltage
Ignition coil (T1/7),
Cylinder 7
Primary circuit a

Primary circuit b

116
(12f)

115
(11f)
N3/10

N3/10

2
(2a)

2
(2a)

Test connection Note:
Individual primary pattern
Range: 40 V
Duration: 5 millisec.

Starter: Crank
200 - 350 V 19.1

19.1 Primary winding of T1/7
Primary circuit a and b

115
(11f)

N3/10

116
(12f)
Ignition: OFF

0.9 - 1.6
The resistance of a single coil at 20° C is approx. 0.6 .
Wiring,
T1/7

20.0

Primary voltage
Ignition coil (T1/8),
Cylinder 8
Primary circuit a

Primary circuit b

114
(10f)

113
(9f)
N3/10

N3/10

2
(2a)

2
(2a)

Test connection Note:
Individual primary pattern
Range: 40 V
Duration: 5 millisec.

Starter: Crank
200 - 350 V 20.1

20.1 Primary winding of T1/6
Primary circuit a and b

113
(9f)

N3/10

114
(10f)
Ignition: OFF

0.9 - 1.6
The resistance of a single coil at 20° C is approx. 0.6 .
Wiring,
T1/8

21.0

Firing voltage
Ignition coil (T1/1) to (T1/8)

Engine analyzer

Test connection Note:
Individual secondary pattern.
Range: 20 kV
Duration: 100%
Connect kV pick-ups successively to T1/1 through T1/8.

Starter: Crank
8 - 20 kV
The resistance of the secondary winding can not be measured due to an installed diode. Spark plugs,
N3/10