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Diagnostic Manual, Engines, Volume 2

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 1.1  HFM Sequential Multiport Fuel Injectin/Ignition System (HFM-SFI)   >   24 Electrical Test Program - Ignition System Test


Electrical Test Program - Ignition System Test

Test scope
Test connection
Test condition Nominal value Possible cause/Remedy
1.0   Engine control
module (N3/4)
Voltage supply, circuit 30

33
(1.33)
N3/4



40
(1.40)
Ignition: ON 11 - 14 V 1.1
1.1   Ground wire N3/4

33
(1.33)


X11/4

2 1)
Ignition: ON 11 - 14 V Wiring, Model 124
Battery ground (W10).
Model 129
Ground, module box
bracket (W27).
Model 140
Output ground, right
footwell (W15).
Model 202, 210
Ground, component compartment - right (W16/4).
1.2   Voltage supply, circuit 30 X11/4

1


N3/4

40
(1.40)
Ignition: ON 11 - 14 V Wire to terminal block X4/10 or X4/22.
2.0   Engine control
module (N3/4)
Voltage supply, circuit 87U

32
(1.32)
N3/4



39
(1.39)
Ignition: ON 11 - 14 V 2.1
2.1   Electronics ground N3/4

32
(1.32)


X11/4

2 1)
Ignition: ON 11 - 14 V Wiring, Model 124
Electronics ground (W10/1),
Models 129, 140
Electronics ground, right
footwell (W15/1),
Model 202, 210
Electronics ground, component compartment - right (W16/6),
2.2
2.2   Voltage supply, circuit 87


1
X11/4
N3/4




39
(1.39)
Ignition: ON



Ignition: OFF
11 - 14 V



< 1 V 		Wiring,
Overvoltage protection relay
module (K1/2), base module (N16/1) or relay module (K40),
Ignition/starter switch (S2/1).
3.0   Engine control
module (N3/4)
Voltage supply, circuit 87

66
(2.22)
N3/4



27
(1.27)
Ignition: ON 11 - 14 V Wiring,
Fuse,
Overvoltage protection relay
module (K1/2), base module (N16/1) or relay module (K40),
3.1
3.1   Electronics ground N3/4

66
(2.22)


X11/4

2 1)
Ignition: ON 11 - 14 V Wiring,
Model 124
Electronics ground (W10/1).

Models 129, 140
Electronics ground, right
footwell (W15/1).

Model 202, 210
Ground component compartment - right (W16/6).
4.0   Ignition coil (T1/1)
Voltage supply

Up to end of M.Y. 1995


As of M.Y. 1996

33
(1.33)






33
(1.33)
N3/4





N3/4



53
(2.9)






65
(2.21)
Ignition: ON

Starter: Crank 		11 - 14 V

> 6 V 		Wire to T1/1,
Ignition coil T1/1,
Engine control module (N3/4).
5.0   Ignition coil (T1/2)
Voltage supply

Up to end of M.Y. 1995




As of M.Y. 1996

33
(1.33)






33
(1.33)
N3/4





N3/4



54
(2.10)






53
(2.9)
Ignition: ON

Starter: Crank 		11 - 14 V

> 6 V 		Wire to T1/2,
Ignition coil T1/2,
Engine control module (N3/4).
6.0   Ignition coil (T1/3)
Voltage supply

Up to end of M.Y. 1995




As of M.Y. 1996

33
(1.33)






33
(1.33)
N3/4





N3/4



65
(2.21)






54
(2.10)
Ignition: ON

Starter: Crank 		11 - 14 V

> 6 V 		Wire to T1/3,
Ignition coil T1/3,
Engine control module (N3/4).
7.0 0 6 4
0 6 5
0 6 6 		CKP sensor (L5)

73
(2.29)






73
(2.29)
N3/4 2)





N3/4 3)



74
(2.30)






74
(2.30)
Starter: Crank






Starter: Crank

Engine: at Idle 		Signal, see
Figure 1 and 2.




> 0.4 V~

> 1 V~ 4) 		7.1 ,
Segments (magnets) on starter ring gear.
7.1   Resistance of L5

73
(2.29)
N3/4



74
(2.30)
Ignition: OFF
Unplug connector 2 on engine control
module (N3/4). 		700 - 1400 7.2
7.2   Insulation of L5

32
(1.32)
N3/4



74
(2.30)
Ignition: OFF
Unplug connector 2 on engine control
module (N3/4). 		> 20 k CKP sensor (L5).
8.0 0 6 7 Model 124, 129, 140, 202

CMP sensor (L5/1)

63
(2.19)






63
(2.19)
N3/4 2)





N3/4 3)



52
(2.8)






52
(2.8)


Engine: at Idle





Engine: at Idle

Signal, see
Figure 3.




> 0.2 V~ 4) 		8.1 ,
Check distance between sensor (L5/1) and pickup (Refer to SMS, Engine 111, Engine Combustion,
Job No. 15-2143)
8.1   Resistance of L5/1

63
(2.19)
N3/4



52
(2.8)
Ignition: OFF
Unplug connector 2 on engine control
module (N3/4). 		900 - 1600 Wiring,
8.2
8.2   Insulation of L5/1

32
(1.32)
N3/4



52
(2.8)
Ignition: OFF
Unplug connector 2 on engine control
module (N3/4). 		> 20 k CMP sensor (L5/1).
9.0 0 6 7 Model 210

Camshaft Hall-effect sensor (B6/1)
Signal

63
(2.19)





52
(2.8)
N3/4 2)




N3/4 3)



52
(2.8)





27
(1.27)


Engine: at Idle




Engine: at Idle

Signal see Figure 4



1.3 - 2 V
Value changes 		Wiring,
9.1 ,
Camshaft Hall-effect sensor (B6/1).

9.1   Camshaft Hall-effect sensor (B6/1)
Voltage supply
1
B6/1

3
Ignition: ON
Unplug connector on camshaft Hall-effect sensor and measure at socket 1 (rd/bl) and 3 (pk/gn).
11 - 14 V Wiring.
10.0 0 9 3
0 9 4
0 9 5
0 9 6 		Transmission overload protection switch (S65)

33
(1.33)
N3/4



9
(1.9)
Engine: at Idle
Selector lever in transmission range "D" 5)

Selector lever in park/neutral position.



< 1 V


> 4 V 		Wiring,
S65.
11.0 0 5 5
0 5 6
0 5 7 		Closure duration for ignition coil (T1/1)

Up to end of M.Y. 1995


As of M.Y. 1996

53
(2.9)






65
(2.21)
N3/4





N3/4



39
(1.39)






39
(1.39)
Starter: Crank


Engine: at Idle 		20 - 100 ms


2 - 4 ms 		7.0
Engine control module (N3/4).
[11.0]   Testing with multimeter: T1/1

Up to end of M.Y. 1995


As of M.Y. 1996

53
(2.9)





65
(2.21)
N3/4




N3/4



39
(1.39)





39
(1.39)
Ignition: ON

Starter: Crank 		0 V

0.3 - 0.5V 		Ignition coil (T1/1),
Engine control module (N3/4),
< 0.3 V: Open circuit in wire from T1/1 to N3/4,
> 0.5 V: T1/1.
12.0 0 5 8
0 5 9
0 6 0 		Closure duration for ignition coil (T1/2)

Up to end of M.Y. 1995


As of M.Y. 1996

54
(2.10)






53
(2.9)
N3/4





N3/4



39
(1.39)






39
(1.39)
Starter: Crank


Engine: at Idle 		20 - 100 ms

2 - 4 ms 		7.0 ,
Engine control module (N3/4).
[12.0]   Testing with multimeter: T1/2

Up to end of M.Y. 1995


As of M.Y. 1996

54
(2.10)





53
(2.9)
N3/4




N3/4



39
(1.39)





39
(1.39)
Ignition: ON

Starter: Crank 		0 V

0.3 - 0.5V 		Ignition coil (T1/2),
Engine control module (N3/4),
< 0.3 V: Open circuit in wire from T1/2 to N3/4,
> 0.5 V: T1/2.
13.0 0 6 1
0 6 2
0 6 3 		Closure duration for ignition coil (T1/3)

Up to end of M.Y. 1995


As of M.Y. 1996

65
(2.21)






54
(2.10)
N3/4





N3/4



39
(1.39)






39
(1.39)
Starter: Crank


Engine: at Idle 		20 - 100 ms

2 - 4 ms 		7.0 ,
Engine control module (N3/4).
[13.0]   Testing with multimeter: T1/3

Up to end of M.Y. 1995



As of M.Y. 1996

65
(2.21)





54
(2.10)
N3/4




N3/4



39
(1.39)





39
(1.39)
Ignition: ON

Starter: Crank 		0 V

0.3 - 0.5V 		Ignition coil (T1/3),
Engine control module (N3/4),
< 0.3 V: Open circuit in wire from T1/3 to N3/4,
> 0.5 V: T1/3.
14.0 0 5 5
0 5 6
0 5 7
1 0 7 		Primary voltage
of ignition coil (T1/1) for
cylinder no. 2 and 5

Up to end of M.Y. 1995



As of M.Y. 1996

53
(2.9)







65
(2.21)
N3/4






N3/4



39
(1.39)







39
(1.39)
Note to test connection:
Primary pattern, measurement range
400 V, duration 100%, voltage signal pick-up connected to T1/1.

Starter: Crank








200 - 350V 		14.1 ,
Engine control module (N3/4).
14.1 1 0 7 Primary winding of T1/1 and T1/2

Up to end of M.Y. 1995



As of M.Y. 1996

53
(2.9)






65
(2.21)
N3/4





N3/4



54
(2.10)






54
(2.10)
Ignition: OFF 0.9 - 1.9 6) T1/1 or T1/2.
15.0 0 5 8
0 5 9
0 6 0
1 0 7 		Primary voltage
of ignition coil (T1/2) for
cylinder no. 3 and 4
Up to end of M.Y. 1995



As of M.Y. 1996

54
(2.10)







53
(2.9)
N3/4






N3/4



39
(1.39)







39
(1.39)
Note to test connection:
Primary pattern, measurement range
400 V, duration 100%, voltage signal pick-up connected to T1/2.

Starter: Crank









200 - 350V 		15.1 ,
Engine control module (N3/4).
15.1 1 0 7 Primary winding of T1/2 and T1/3

Up to end of M.Y. 1995


As of M.Y. 1996

54
(2.10)





53
(2.9)
N3/4




N3/4



65
(2.21)





54
(2.10)
Ignition: OFF
0.9 - 1.9 6) Ignition coils (T1/2 or T1/3).
16.0 0 6 1
0 6 2
0 6 3
1 0 7 		Primary voltage
of ignition coil (T1/3) for
cylinder no. 1 and 6

Up to end of M.Y. 1995


As of M.Y. 1996


65
(2.21)






54 (2.10)

N3/4





N3/4




39
(1.39)






39
(1.39)
Starter: Crank 200 - 350V Primary winding of ignition coil T1/3,
Engine control module (N3/4).
17.0 0 5 5
0 5 6
0 5 7 		Firing voltage
of ignition coil (T1/1) for
cylinder no. 2 and 5 		 
Engine
analyzer
Note to test connection:
Secondary pattern, measurement range
20 kV, duration 100%, voltage signal pick-up connected to ignition coil (T1/1).

Starter: Crank











8 - 30 kV 		17.1 ,
Spark plugs,
Spark plug cable,
Spark plug connector,
Engine control module (N3/4).
17.1   Secondary winding of T1/1
ter. 4a
T1/1

ter. 4b
Unplug both ignition cables on T1/1. 5.2 - 8.5 k Ignition coil (T1/1).
18.0 0 5 8
0 5 9
0 6 0 		Firing voltage
of ignition coil (T1/2) for
cylinder no. 3 and 4

 
Engine analyzer


 
Note to test connection:
Secondary pattern, measurement range
20 kV, duration 100%, voltage signal pick-up connected to ignition coil (T1/2).

Starter: Crank








8 - 30 kV 		18.1 ,
Spark plugs,
Spark plug cable,
Spark plug connector,
Engine control module (N3/4).
18.1   Secondary winding of T1/2
ter. 4a
T1/2

ter. 4b
Unplug both ignition cables on T1/2. 5.2 - 8.5 k Ignition coil (T1/2).
19.0 0 6 1
0 6 2
0 6 3 		Firing voltage
of ignition coil (T1/3) for
cylinder no. 1 and 6 		 
Engine analyzer
Note to test connection:
Secondary pattern, measurement range
20 kV, duration 100%, voltage signal pick-up connected to ignition coil (T1/3).

Starter: Crank











8 - 30 kV 		19.1 ,
Spark plugs,
Spark plug cable,
Spark plug connector,
Engine control module (N3/4).
19.1   Secondary winding of T1/3
ter. 4a
T1/3

ter. 4b
Unplug both ignition cables on T1/3. 5.2 - 8.5 k Ignition coil (T1/3).
1) On models 129, 140 and 202. On model 124, connect to socket 16.
2) Test with oscilloscope.
3) Test with multimeter only if oscilloscope is unavailable.
4) Voltage increases with increasing rpm.
5) Vehicles starting off in first gear must be driven on the dynamometer with selector lever in transmission range "D" at > 12 mph (20 km/h).
On vehicles with ASR, sockets 1 and 6 on the data link connector (DTC readout) (X11/4) must be bridged.
6) Resistance of coil T1/2 and T1/3. Resistance of single coil is 0.3 - 0.6



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