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Diagnostic Manual, Engines, Volume 4

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9.6 ME - SFI (ME1.0) > 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.

WARNING!
Risk of fatal injury from being pulled into rotating vehicle parts.
Do not reach into rotating parts.
Wear closed and tight-fitting work clothes.
Protect vicinity of rotating vehicle components from unauthorized access.

WARNING!
Risk of explosion from fuel igniting, risk of poisoning from inhaling and swallowing fuel as well as risk of injury to eyes and skin from contact with fuel.
No fire, sparks, exposed flames or smoking.
Pour fuels only into suitable and appropriately marked containers.
Wear protective clothing when handling fuel.

Note regarding "Test Connection" column:
The numbers indicated in parentheses, for example,

1.0 (2A) signify:
2 = Socket 2 on wiring diagram.
A = Connector A on wiring diagram

Connect interior harness connector to connection 1 on test cable.
Connect engine harness connector to connection 2 on test cable.

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

11 ,

21 ,

22 ,
3. Ignition: OFF,
4. Connect test cable with socket box to N3/11 or N3/12, see

22 .

Test scope Test connection

Test condition Nominal value Possible cause/remedy

1.0 P 0 5 6 0
P 1 5 8 7 Left engine control
module (N3/11) or
Right engine control
module (N3/12)
Voltage supply
circuit 30

26
(1.26)
N3/11
N3/12

35
(1.35)

Ignition: ON 11 - 14 V 1.1

1.1 Ground wire

26
(1.26)

39
(1.39)

N3/11
N3/12

X11/4
2

2

Ignition: ON 11 - 14 V Wiring,
Model 129
Ground (W27), module box
bracket.
Model 140
Harness ground (W15), right
footwell.
1.2

1.2 Voltage supply
circuit 30

X11/4
1
N3/11
N3/12

35
(1.35)

Ignition: ON 11 - 14 V Wiring,
Base module (BM) (N16/1) or
fuse on N16/1

2.0 P 0 5 6 0
P 1 5 8 7 Left engine control
module (N3/11) or
Right engine control
module (N3/12)
Voltage supply
circuit 87L

38
(1.38)
N3/11
N3/12

24
(1.24)

Ignition: ON 11 - 14 V 2.1

2.1 Electronics ground

38
(1.38)

N3/11
N3/12

X11/4
2

Ignition: ON 11 - 14 V Wiring,
Model 129 and 140
Electronics ground (W15/1), right footwell
2.2

2.2 Voltage supply
Circuit 87L

X11/4
1
N3/11
N3/12

24
(1.24)

Ignition: ON

Ignition: OFF 11 - 14 V

< 1 V Wiring,
Base module (N16/1) or fuse on
base module,
Ignition/starter switch (S2/1)

3.0 P 0 5 6 0
P 1 5 8 7 Left engine control
module (N3/11) or
Right engine control
module (N3/12)
Voltage supply
circuit 87M1e

39
(1.39)
N3/11
N3/12

36
(1.36)

Ignition: ON

Ignition: OFF 11 - 14 V

< 1 V Wiring.

4.0 Ignition coil (T1/1 or T1/7)
Voltage supply

26
(1.26)

N3/11
N3/12

83
(2.83)
Ignition: ON

Starter: Crank 11 - 14 V

> 10 V Wiring.

Model 129 as of 09/95 and Model
140 as of 06/96 fused as follows:
Model 129: fuse 34
Model 140: fuse 22

5.0 Ignition coil (T1/2 or T1/8)
Voltage supply

26
(1.26)

N3/11
N3/12

94
(2.94)

Ignition: ON

Starter: Crank 11 - 14 V

> 10 V Wiring.

Model 129 as of 09/95 and Model
140 as of 06/96 fused as follows:
Model 129: fuse 34
Model 140: fuse 22

6.0 Ignition coil (T1/3 or T1/9)
Voltage supply

26
(1.26)
N3/11
N3/12

85
(2.85)

Ignition: ON

Starter: Crank 11 - 14 V

> 10 V Wiring.

Model 129 as of 09/95 and Model
140 as of 06/96 fused as follows:
Model 129: fuse 34
Model 140: fuse 22

7.0 Ignition coil (T1/4 or T1/10)
Voltage supply

26
(1.26)

N3/11
N3/12

115
(2.115)
Ignition: ON

Starter: Crank 11 - 14 V

> 10 V Wiring.

Model 129 as of 09/95 and Model
140 as of 06/96 fused as follows:
Model 129: fuse 34
Model 140: fuse 22

8.0 Ignition coil (T1/5 or T1/11)
Voltage supply

26
(1.26)

N3/11
N3/12

84
(2.84)

Ignition: ON

Starter: Crank 11 - 14 V

> 10 V Wiring.

Model 129 as of 09/95 and Model
140 as of 06/96 fused as follows:
Model 129: fuse 34
Model 140: fuse 22

9.0 Ignition coil (T1/6 or T1/12)
Voltage supply

26
(1.26)
N3/11
N3/12

95
(2.95)

Ignition: ON

Starter: Crank 11 - 14 V

> 10 V Wiring.

Model 129 as of 09/95 and Model
140 as of 06/96 fused as follows:
Model 129: fuse 34
Model 140: fuse 22

10.0 P 0 3 3 5
P 1 3 0 0 Left CKP sensor (L5/4)
Right CKP sensor (L5/5)

78
(2.78)

78
(2.78)
N3/11 2)
N3/12 2)

N3/11 3)
N3/12 3)

89
(2.89)

89
(2.89)

Starter: Crank

Engine: at Idle

Starter: Crank

Engine: at Idle Signal, see
Figure 1.

> 0.5 V~

> 7 V~
Increase in rpm
=
increase in voltage. 10.1 ,
Teeth on starter ring gear.

10.1 Resistance of CKP sensor (L5/4 or L5/5)

78
(2.78)
N3/11
N3/12

89
(2.89)
Ignition: OFF
Unplug connector 2 on
engine control
module (N3/11) or
(N3/12).

(at 20°C):
600 - 1200
L5/4 or L5/5

11.0 P 0 3 4 1
P 1 3 9 7 Left camshaft Hall-effect sensor (B6/2) or
Right camshaft Hall-effect sensor (B6/3)
Hall-effect signal

87
(2.87)

66
(2.66)
N3/11 2)
N3/12 2)

N3/11 3)
N3/12 3)

66
(2.66)

25
(1.25)

Engine: at Idle

Engine: at Idle Signal, see
Figure 2.

1.3 - 1.7 V
Value changes 11.1 ,
B6/2 or B6/3

11.1 Voltage supply to camshaft Hall-effect sensor (B6/2 or B6/3)

1

B6/2
B6/3

3

Ignition: ON
Disconnect connector
from Hall-effect sensor
(B6/2 or B6/3) and test
directly on sockets 1 and
3 of connector.
11 - 14 V Wiring.

12.0 Closing duration for ignition coil (T1/1 or T1/7)

83
(2.83)

N3/11
N3/12

25
(1.25)
Starter: Crank

Engine: at Idle 20 - 100 ms

2 - 4 ms 10.0 ,
12.1 ,
N3/11 or N3/12

12.1 Rest current shut-off: T1/1 or T1/7

83
(2.83)

N3/11
N3/12

25
(1.25)
Ignition: ON

Starter: Crank

0 V

0.3 - 0.5 V T1/1 or T1/7,
N3/11 or N3/12,

< 0.3 V: wire from T1/1 to N3/12
or T1/7 to N3/11 open circuit,
> 0.5 V: T1/1 or T1/7

13.0 Closing duration for ignition coil (T1/2 or T1/8)

94
(2.94)

N3/11
N3/12

25
(1.25)
Starter: Crank

Engine: at Idle 20 - 100 ms

2 - 4 ms 13.1 ,
N3/11 or N3/12

13.1 Rest current shut-off: T1/2 or T1/8

94
(2.94)

N3/11
N3/12

25
(1.25)
Ignition: ON

Starter: Crank

0 V

0.3 - 0.5 V T1/2 or T1/8,
N3/11 or N3/12,

< 0.3 V: wire from T1/2 to N3/12
or T1/8 to N3/11 open circuit,
> 0.5 V: T1/2 or T1/8

14.0 Closing duration for ignition coil (T1/3 or T1/9)

85
(2.85)

N3/11
N3/12

25
(1.25)
Starter: Crank

Engine: at Idle 20 - 100 ms

2 - 4 ms 14.1 ,
N3/11 or N3/12

14.1 Rest current shut-off: T1/3 or T1/9

85
(2.85)

N3/11
N3/12

25
(1.25)
Ignition: ON

Starter: Crank

0 V

0.3 - 0.5 V T1/3 or T1/9,
N3/11 or N3/12,

< 0.3 V: wire from T1/3 to N3/12
or T1/9 to N3/11 open circuit,
> 0.5 V: T1/3 or T1/9

15.0 Closing duration for ignition coil (T1/4 or T1/10)

115
(2.115)

N3/11
N3/12

25
(1.25)
Starter: Crank

Engine: at Idle 20 - 100 ms

2 - 4 ms 15.1 ,
N3/11 or N3/12

15.1 Rest current shut-off: T1/4 or T1/10

115
(2.115)

N3/11
N3/12

25
(1.25)
Ignition: ON

Starter: Crank

0 V

0.3 - 0.5 V T1/4 or T1/10,
N3/11 or N3/12,

< 0.3 V: wire from T1/4 to N3/12
or T1/10 to N3/11 open circuit,
> 0.5 V: T1/4 or T1/10

16.0 Closing duration for ignition coil (T1/5 or T1/11)

84
(2.84)

N3/11
N3/12

25
(1.25)
Starter: Crank

Engine: at Idle 20 - 100 ms

2 - 4 ms 16.1 ,
N3/11 or N3/12

16.1 Rest current shut-off: T1/5 or T1/11

84
(2.84)

N3/11
N3/12

25
(1.25)
Ignition: ON

Starter: Crank

0 V

0.3 - 0.5 V T1/5 or T1/11,
N3/11 or N3/12,

< 0.3 V: wire from T1/5 to N3/12
or T1/11 to N3/11 open circuit,
> 0.5 V: T1/5 or T1/11

17.0 Closing duration for ignition coil (T1/6 or T1/12)

95
(2.95)

N3/11
N3/12

25
(1.25)
Starter: Crank

Engine: at Idle 20 - 100 ms

2 - 4 ms 17.1 ,
N3/11 or N3/12

17.1 Rest current shut-off: T1/6 or T1/12

95
(2.95)

N3/11
N3/12

25
(1.25)
Ignition: ON

Starter: Crank

0 V

0.3 - 0.5 V T1/6 or T1/12,
N3/11 or N3/12,

< 0.3 V: wire from T1/6 to N3/12
or T1/12 to N3/11 open circuit,
> 0.5 V: T1/6 or T1/12

18.0 P 0 3 0 0
P 0 3 0 1
P 0 3 0 7 Primary voltage
Ignition coil (T1/1 or T1/7)

83
(2.83)

N3/11
N3/12

25
(1.25)
Test connection Note:
Individual primary pattern
Range 400 V
Duration 100%
Starter: Crank
200 - 350 V 18.1 ,
N3/11 or N3/12

18.1 Primary winding of T1/1 and T1/2 or T1/7 and T1/8

83
(2.83)

N3/11
N3/12

94
(2.94)
Ignition: OFF

0.9 - 1.4
The resistance of a single coil is 0.5 - 0.7 T1/1 or T1/2 and/or T1/7 or T1/8

19.0 P 0 3 0 0
P 0 3 0 2
P 0 3 0 8 Primary voltage
Ignition coil (T1/2 or T1/8)

94
(2.94)

N3/11
N3/12

25
(1.25)
Test connection Note:
Individual primary pattern
Range 400 V
Duration 100%
Starter: Crank 200 - 350 V 19.1 ,
N3/11 or N3/12

19.1 Primary winding of T1/2 and T1/1 or T1/8 and T1/7

94
(2.94)

N3/11
N3/12

83
(2.83)
Ignition: OFF

0.9 - 1.4
The resistance of a single coil is 0.5 - 0.7 T1/2 or T1/1 and/or T1/8 or T1/7

20.0 P 0 3 0 0
P 0 3 0 3
P 0 3 0 9 Primary voltage
Ignition coil (T1/3 or T1/9)

85
(2.85)

N3/11
N3/12

25
(1.25)
Test connection Note:
Individual primary pattern
Range 400 V
Duration 100%
Starter: Crank 200 - 350 V 20.1 ,
N3/11 or N3/12

20.1 Primary winding of T1/3 and T1/4 or T1/9 and T1/10

85
(2.85)

N3/11
N3/12

115
(2.115)
Ignition: OFF

0.9 - 1.4
The resistance of a single coil is 0.5 - 0.7 T1/3 or T1/4 and/or T1/9 or T1/10

21.0 P 0 3 0 0
P 0 3 0 4
P 0 3 1 0 Primary voltage
Ignition coil (T1/4 or T1/10)

115
(2.115)

N3/11
N3/12

25
(1.25)
Test connection Note:
Individual primary pattern
Range 400 V
Duration 100%
Starter: Crank 200 - 350 V 21.1 ,
N3/11 or N3/12

21.1 Primary winding of T1/4 and T1/3 or T1/10 and T1/9

115
(2.115)

N3/11
N3/12

85
(2.85)
Ignition: OFF
0.9 - 1.4
The resistance of a single coil is 0.5 - 0.7 T1/4 or T1/3 and/or T1/10 or T1/9

22.0 P 0 3 0 0
P 0 3 0 5
P 0 3 1 1 Primary voltage
Ignition coil (T1/5 or T1/11)

84
(2.84)

N3/11
N3/12

25
(1.25)
Test connection Note:
Individual primary pattern
Range 400 V
Duration 100%
Starter: Crank 200 - 350 V 22.1 ,
N3/11 or N3/12

22.1 Primary winding of T1/5 and T1/6 or T1/11 and T1/12

84
(2.84)

N3/11
N3/12

95
(2.95)
Ignition: OFF

0.9 - 1.4
The resistance of a single coil is 0.5 - 0.7 T1/5 or T1/6 and/or T1/11 or T1/12

23.0 P 0 3 0 0
P 0 3 0 6
P 0 3 1 2 Primary voltage
Ignition coil (T1/6 or T1/12)

95
(2.95)

N3/11
N3/12

25
(1.25)
Test connection Note:
Individual primary pattern
Range 400 V
Duration 100%
Starter: Crank 200 - 350 V 23.1 ,
N3/11 or N3/12

23.1 Primary winding of T1/6 and T1/5 or T1/12 and T1/11

95
(2.95)

N3/11
N3/12

84
(2.84)
Ignition: OFF

0.9 - 1.4
The resistance of a single coil is 0.5 - 0.7 T1/6 or T1/5 and/or T1/12 or T1/11

24.0 P 0 3 0 0
P 0 3 0 1
P 0 3 0 2
P 0 3 0 3
P 0 3 0 4
P 0 3 0 5
P 0 3 0 6
P 0 3 0 7
P 0 3 0 8
P 0 3 0 9
P 0 3 1 0
P 0 3 1 1
P 0 3 1 2
Firing voltage
Ignition coil (T1/1) to (T1/12)

Engine analyzer

Test connection Note:
Individual secondary
pattern
Range 20 kV
Duration 100%
Connect kV pick-ups
successively to T1/1
through T1/12.

Starter: Crank 8 - 20 kV
The resistance of the secondary winding can not be measured due to an installed diode. Spark plugs,
T1/1 to T1/12,
N3/11 or N3/12

2) Test with oscilloscope.
3) Test with multimeter only if oscilloscope is unavailable.