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Diagnostic Manual, Engines, Volume 2

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 5.3 Distributer Ignition System (DI)   >   23 Electrical Test Program - Test (Engine Does Not Run)


Electrical Test Program - Test (Engine Does Not Run)

Test step
DTC Scope of test
Test connection
Test condition
Nominal value
Possible cause/remedy
1.0   Ignition control module
(N1/4 or N1/5)
Voltage supply
Circuit 15


2
(A.2)
N1/4 or N1/5




3
(A.3)
Connect socket box to
N1/4 or N1/5.
Ignition: ON
11 - 14 V Open circuit in wire to ground, left or right front wheelhousing (W3/2 or W3/3),
Open circuit in wire to base
module (N16/1).
1.1   Ground connection at W3/2 or W3/3

N1/4
or
N1/5

2
(A.2)








X11/4

2
Ignition: ON 11 - 14 V Ground (W3/2 or W3/3)
2.0   Ignition control module
(N1/4 or N1/5)
Voltage supply
Circuit 30


2
(A.2)
N1/4 or N1/5





16
(B.8)
Ignition: ON



11 - 14 V



Wiring to ignition/starter switch (S2/1).
3.0 1 7 Ignition coil (T1/1 or T1/2)
Voltage supply



W3




T1/1
or
T1/2
Cir. 15
Ignition: ON
11 - 14 V
Wire from T1/1 or T1/2 to ignition/starter switch (S2/1).
4.0 1 7 Left or right crankshaft position sensor (L5/4 or L5/5)

18




18
N1/4 or N1/5 1)




N1/4 or N1/5 2)




17




17
Engine: Crank




Engine: Crank
Signal, see
24 , Figure 1 and 2.

> 0.35 V~
4.1 ,
4.2 ,
Segments on starter ring gear.
4.1   Resistance from crankshaft position sensor (L5/4 or L5/5)

18
N1/4 or N1/5




17
Ignition: OFF
Unplug connector (2) for
L5/4 or L5/5 at ignition control module (N1/4 or N1/5) (see 24 , Figure 4).
680 - 1300 4.2
4.2 1 7 Insulation of L5/4 or L5/5

2
(A.2)
N1/4 or N1/5




17

 
>200 k Crankshaft position sensor
(L5/4 or L5/5).


5.0   Dwell angle  
Engine analyzer
  Engine: Start 1 - 30° or
1 - 50 %
4.0 ,
5.1 ,
Ignition control module
(N1/4 or N1/5).
5.1   Rest current shut-off


Cir. 1



Cir. 1
T1/1 or T1/2



T1/1 or T1/2


Cir. 15



Cir. 15
Ignition: ON



Engine: Start
0 V



0.3 - 0.5 V
Ignition control module (N1/4 or N1/5) and ignition coil (T1/1 or T1/2)


< 0.3 V: Open circuit in wire from ignition coil (T1/1 or T1/2) to N1/4 or N1/5,

> 0.5 V: Ignition coil T1/1 or T1/2.
6.0   Ignition coil (T1/1 or T1/2)
Primary voltage
 
Engine analyzer


Primary pattern
measurement range
400 V, duration 100%,
voltage signal pick-up
connected to ignition coil (T1/1 or T1/2).
  Engine: Start 200 - 350 V Ignition control module
(N1/4 or N1/5),
Ignition coil (T1/1 or T1/2).
7.0 1 5 Ignition coil (T1/1 or T1/2)
Firing voltage
 
Engine analyzer


Secondary pattern
measurement range
10 kV, duration 100%,
voltage signal pick-up
connected to ignition coil (T1/1 or T1/2).
  Engine: Start 8 - 20 kV 7.1 ,
7.2 ,
Ignition control module (N1/4 or N1/5).
7.1 1 5 Primary winding of ignition coil (T1/1 or T1/2)
 
T1/1 or T1/2
Cir. 1 Cir. 15
  Ignition: OFF
Disconnect wires of circuit 1 and 15 at ignition coil (T1/1 or T1/2).
0.3 - 0.6 Ignition coil (T1/1 or T1/2).
7.2 1 5 Secondary winding of ignition coil (T1/1 or T1/2)
 
T1/1 or T1/2
Cir. 1 Cir. 4
  Ignition: OFF
Disconnect wire of circuit 4 from ignition coil
(T1/1 or T1/2).
8 - 13 k Ignition coil (T1/1 or T1/2).
8.0   Left high voltage
distributor (S5/5)
Firing voltage
 
Engine analyzer

Secondary Parade,
measurement range 20
kV, voltage signal pick-up connected to ignition cable for cylinder 7.
  Engine: Start 8 - 20 kV 8.1 ,
8.2 ,
8.1   Distributor cap
(individual terminals)

inside

center
Distributor cap



outside electrode

outside

center
Ignition: OFF
Remove distributor cap.
Unplug ignition cables
(Disconnect cables one at a time).
700 - 1300
at each connection
Distributor cap.
8.2   Rotor
center
Rotor



point
Distributor cap removed.
700 - 1300
and visual inspection
Rotor.
9.0   Right high voltage distributor
(S5/6)
Firing voltage
 
Engine analyzer


Secondary Parade,
measurement range 20
kV, voltage signal pick-up connected to ignition cable for cylinder 1.
  Engine: Start 8 - 20 kV 9.1 ,
9.2 ,
9.1   Distributor cap
(individual terminals)

inside

center
Distributor cap



outside electrode

outside

center
Ignition: OFF
Remove distributor cap.
Unplug ignition cables
(Disconnect cables one at a time).
700 - 1300
at each connection
Distributor cap,
9.2   Rotor
center
Rotor


point
Distributor cap removed.
700 - 1300
and visual inspection.
Rotor.
1) Test with oscilloscope.
2) Test with multimeter only if oscilloscope is unavailable.