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Diagnostic Manual, Engines, Volume 4

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9.1 ME - SFI (ME2.1) > 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.

1. Review WARNING! on pages 11/1 and 11/2,
2. Review

11 ,

21 ,

22 ,

23 ,

24 ,

31 ,

33 ,
3. Review section 0,
4. Connect HHTand readout DTC memory, see

11 ,
5. Ignition: OFF
6. Connect test cable with socket box as per "Connection Diagram - Socket Box", see

22 /5.

Connector with red marking is not required at this time since the engine control module has presently no function installed for it.
When disconnecting the connectors on the engine control module remove center connector (D) first, when reconnecting connectors install center connector (D) last.

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

Test scope Test connection Test condition Nominal value Possible cause/Remedy

1.0 P 0 5 6 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

3 (3A)

7 (7A)

112
(8F)

119
(15F)
N3/10

X11/4 2

X11/4 2

X11/4 2

X11/4 2

Ignition: ON 11 - 14 V Wiring,
Model 129:
Ground (W27), module box bracket.
Model 140:
Output ground (W15), right footwell.
Model 202, 210:
Output ground (W16/6), right
component compartment,

1.2 Voltage supply
circuit 30
X11/4
1
N3/10

12
(4B)
Ignition: ON 11 - 14 V Wiring,
Model 129, 140:
Base module (N16/1) or fuse on base module,
Model 202:
Passenger-side fuse and relay module box (K40/4),
Model 210:
Relay module (K40).

2.0 P 0 5 6 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

8
(8A)
N3/10

X11/4
2
Ignition: ON 11 - 14 V Wiring,
Model 129:
Ground (W27), module box
bracket,
Model 140:
Output ground (W15), right footwell,
Model 202, 210:
Output ground (W16/6), right component compartment.

2.2 Voltage supply
circuit 87
X11/4
1
N3/10

2
(2A)
Ignition: ON

Ignition: OFF 11 - 14 V

< 1 V Wiring,
Model 129, 140:
Base module (N16/1) or fuse on base module,
Model 202:
Passenger-side fuse and relay module box (K40/4),
Model 210:
Relay module (K40).

3.0 Ignition coil (T1/1)
Cylinder 2 and 5
Voltage supply

3
(3A)
N3/10

117

(13F)
Ignition: ON

Starter: Crank 11 - 14 V

> 10 V Wiring,
Fuses:
Model 129, fuse 34,
Model 140, fuse 22,
Model 202, fuse and relay module
box fuse 6,
Model 210, fuse 19
Ignition coil (T1/1).

4.0 Ignition coil (T1/2)
Cylinder 3 and 4
Voltage supply

3
(3A)
N3/10

110

(6F)
Ignition: ON

Starter: Crank 11 - 14 V

> 10 V Wiring,
Fuses:
Model 129, fuse 34,
Model 140, fuse 22,
Model 202, fuse and relay module
box fuse 6,
Model 210, fuse 19,
Ignition coil (T1/2).

5.0 Ignition coil (T1/3)
Cylinder 1 and 6
Voltage supply

3
(3A)
N3/10

124

(20F)
Ignition: ON

Starter: Crank 11 - 14 V

> 10 V Wiring,
Fuses:
Model 129, fuse 34,
Model 140, fuse 22,
Model 202, fuse and relay module
box fuse 6,
Model 210, fuse 19,
Ignition coil (T1/3).

6.0 P 0 3 3 5 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.

> 2.5 V~

> 5 V~
Voltage increase = rpm increase.
6.1 ,
Teeth on starter ring gear.

6.1 CKP sensor (L5)
Resistance

93
(37E)
N3/10

94
(38E)
Ignition: OFF
Unplug connector E on engine control
module (N3/10).

(at 20°C):
600 - 1200

Wiring,
L5.

7.0 P 0 3 4 1 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 - 1.7 V
Value changes
7.1 ,
Wiring,
B6/1.

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

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

8.0 P 0 3 0 0
P 0 3 0 2
P 0 3 0 5 Primary voltage
Ignition coil (T1/1),
Cylinders 2 and 5
117
(13F)
N3/10

2
(2A)
Test connection Note:
Individual primary
pattern:
Range 400 V
Duration 100%

Starter: Crank
200 - 350V 8.1

8.1 Primary winding of T1/1 and T1/2
117
(13F)
N3/10

110

(6F)
Ignition: OFF

0.9 - 1.6
The resistance
of a single coil
at 20oC is
approx. 0.6 .
Wiring,
T1/1 or T1/2

9.0 P 0 3 0 0
P 0 3 0 3
P 0 3 0 4 Primary voltage
Ignition coil (T1/2)
Cylinders 3 and 4
110
(6F)
N3/10

2
(2A)
Test connection Note:
Individual primary
pattern:
Range 400 V
Duration 100%

Starter: Crank
200 - 350 V 9.1

9.1 Primary winding of T1/2 and T1/1
110
(6F)
N3/10

117

(13F)
Ignition: OFF 0.9 - 1.6
The resistance
of a single coil
at 20oC is
approx. 0.6 .
Wiring,
T1/2 or T1/1

10.0 P 0 3 0 0
P 0 3 0 1
P 0 3 0 6 Primary voltage
Ignition coil (T1/3)
Cylinders 1 and 6
124
(20F)
N3/10

2
(2A)
Test connection Note:
Individual primary
pattern:
Range 400 V
Duration 100%

Starter: Crank
200 - 350 V 10.1

10.1 Primary winding of T1/3 and T1/2
124
(20F)
N3/10

110

(6F)
Ignition: OFF 0.9 - 1.6 , The resistance
of a single coil at 20oC is
approx. 0.6 .
Wiring,
T1/3 or T1/2

11.0 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 Firing voltage
Ignition coil (T1/1) to (T1/3)
Engine analyzer

Test connection Note:
Individual secondary
pattern:
Range 20 kV
Duration 100%
Connect kV pick-ups
successively to T1/1
through T1/3.

Starter: Crank
8 - 20 kV 11.1 ,
Spark plugs,
N3/10.

11.1 Secondary winding of T1/1,
T1/2 and T1/3

cir. 4a
T1/1
T1/2
T1/3

cir. 4b

Disconnect both ignition
cables on T1/1, T1/2 or
T1/3 6 - 8.5 k T1/1, T1/2 or T1/3