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Diagnostic Manual, Engines, Volume 2

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 5.2 Electronic Ignition System with Anti-Knock Control (EZL/AKR)   >   23 Electrical Test Program - Test (Engine Does Not Run)


Electrical Test Program - Test (Engine Does Not Run)

Test scope Test connection Test condition Nominal value Possible cause/Remedy
1.0   DI control module (N1/3)
Voltage supply
Circuit 15


2
(A.2)
N1/3



3
(A.3)
Connect to N1/3
Ignition: ON
11 - 14 V Open circuit in wire to ground,
left front wheel housing (W3/2),
Open circuit in wire to base module (N16/1).
1.1   Ground wire at W3/2 N1/3

2
(A.2)



X11/4
2
Ignition: ON 11 - 14 V W3/2.
2.0   DI control module (N1/3)
Voltage supply
Circuit 30


2
(A.2)
N1/3



16
(B.8)
Ignition: ON 11 - 14 V Open circuit in wire to ignition/starter switch (S2/1).
3.0   Ignition coil
Voltage supply
Engine 104



Engine 119

W3





W3








T1
Term. 15

T1/1
or
T1/2
Term. 15
Ignition: ON



Ignition: ON
11 - 14 V



11 - 14 V
Open circuit in wire from ignition coil (T1) to ignition/starter switch (S2/1),



Open circuit in wire from ignition coil (T1/1) or ignition coil (T1/2) to ignition/starter switch (S2/1).
4.0 1 7 CKP sensor (L5)

18





18
N1/3 1)




N1/3 2)



17





17
Engine: Start





Engine: Start
Signal, see
25 , figure 1 and 2.



> 0.4 V~
4.1 ,
4.2 ,
Segments on starter ring gear.

4.1 1 7 Resistance of L5

18
N1/3



17
Ignition: OFF
Unplug connector (2) for L5 at DI control module (N1/3) ( 25 , Figure 5).
680 - 1200 L5 defective.
4.2 1 7 Insulation of L5

2
N1/3



17
  > 200 k L5 defective.
5.0 1 8 Magnets for CKP sensor

Engine 119 only


18
N1/3



17
Engine: Start Signal see
25 , Figure 2.
Replace flexplate with ring gear and magnets
6.0   Dwell angle

 
Engine analyzer


 
Engine: Start Engine 104
1 - 30o or
1 - 50%


Engine 119
9 - 49o
10 - 54%
CKP sensor (L5),
4.0
Rest current shut-off inoperative,
6.0

DI control module (N1/3).
6.1   Rest current shut-off
Engine 104






Engine 119

Term. 1



Term. 1





Term. 1



Term. 1
T1



T1



T1/1 or T1/2



T1/1 or T1/2

Term. 15



Term. 15





Term. 15



Term. 15
Ignition: ON




Engine: Start





Ignition: ON



Engine: Start

0 V




0.3 - 0.5 V





0 V



0.3 - 0.5 V

N1/3,
Ignition coil (T1),



< 0.3 V: Open circuit in wire from T1 to N1/3.
> 0.5 V: T1



N1/3, T1/1 or T1/2,



< 0.3 V: Open circuit in wire from T1/1 or T1/2 to N1/3.
> 0.5 V: T1/1 or T1/2
7.0 1 5 Ignition coil (T1) or ignition coil 1 (right cylinder bank) (T1/1)
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 T1 or T1/1.

Engine: Start






200 - 350 V






N1/3,
T1 or T1/1.
8.0 1 6 Ignition coil 2 (left cylinder bank) (T1/2)
Primary voltage

Engine 119 only!
 
Engine analyzer
Primary pattern, Measurement range 400 V, duration 100%,
Voltage signal pick-up connected to T1/2.

Engine: Start






200 - 350 V






N1/3,
T1/2.
9.0 1 5 Ignition coil (T1) or ignition coil 1 (right cylinder bank) (T1/1)
Firing voltage

Engine 104: T1
Engine 119: T1/1


 
Engine analyzer


 
Secondary pattern, Measurement range 20 kV, duration 100%,
Voltage signal pick-up connected to T1 or T1/1.

Engine: Start
8 - 20 kV Primary winding of
ignition coil, 9.1 ,

Secondary winding of
ignition coil, 9.2 ,

DI control module (N1/3).
9.1 1 5 Primary winding of T1 or T1/1

Engine 104: T1
Engine 119: T1/1

Term. 1
T1 or T1/1

Term. 15
Ignition: OFF
Disconnect terninals 1 and 15 from ignition coil.
0.3 - 0.6 T1 or T1/1.
9.2 1 5 Secondary winding of T1 or T1/1

Engine 104: T1
Engine 119: T1/1

Term. 1
T1 or T1/1

Term. 4
Ignition: OFF
Disconnect cable of terminal 4 at ignition coil.
8 - 13 k T1 or T1/1.
10.0 1 6 Ignition coil 2 (right cylinder bank) (T1/2)
Firing voltage

Engine 119 only!


 
Engine analyzer


 
Secondary pattern, Measurement range 20 kV, duration 100%,
Voltage signal pick-up connected to T1/2.

Engine: Start
8 - 20 kV Primary winding of
ignition coil, 10.1 ,

Secondary winding of
ignition coil, 10.2 ,

DI control module (N1/3).
10.1 1 6 Primary winding of T1/2

Engine 119 only!

Term. 1
T1/2

Term. 15
Ignition: OFF
Disconnect terninals 1 and 15 from ignition coil.
0.3 - 0.6 T1/2.
10.2 1 6 Secondary winding of T1/2

Engine 119 only!

Term. 1
T1/2

Term. 4
Ignition: OFF
Disconnect cable of terminal 4 at ignition coil.
8 - 13 k T1/2.
11.0   High-voltage distributor (S5/3) or left high-voltage distributor (S5/5)
Firing voltage

Engine 104: S5/3
Engine 119: S5/5


 
Engine analyzer


 
Secondary pattern, Measurement range 20 kV, duration 100%,
Voltage signal pick-up connected to ignition cable, cylinder 5.

Engine: Start
8 - 20 kV Distributor cap 11.1 ,
Rotor 11.2.
11.1   Distributor cap
(individual terminals)


inside
Distributor cap


outside
Ignition: OFF
Remove distributor cap.
Unplug ignition cables (disconnect cables one at a time).
700 - 1300
per terminal
Distributor cap defective.
11.2   Rotor
center
Rotor

point
Ignition: OFF
Remove distributor cap.
700 - 1300
and visual inspection.
Rotor defective.
12.0   Right high-voltage distributor (S5/6)
Firing voltage

Engine 119 only!


 
Engine analyzer


 
Secondary pattern, Measurement range 20 kV, duration 100%,
Voltage signal pick-up connected to ignition cable, cylinder 1.

Engine: Start
8 - 20 kV Distributor cap 12.1 ,
Rotor 12.2.
12.1   Distributor cap
(individual terminals)


inside
Distributor cap


outside
Ignition: OFF
Remove distributor cap.
Unplug ignition cables (disconnect cables one at a time).
700 - 1300
per terminal
Distributor cap defective.
12.2   Rotor
center
Rotor

point
Ignition: OFF
Remove distributor cap.
700 - 1300
and visual inspection.
Rotor defective.
1) Test with oscilloscope.
2) Test with multimeter only if oscilloscope is not available.