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This test step serves as a
learning and checking value for better comprehension of the system and to
evaluate the system with external influences.
The injection period is composed
of several elements which have an effect on the size of the signal.
If the measurements of the
following test steps deviate from the nominal values, carry out trouble -
shooting.
Test
Step Check of Further additional causes
of fault are:
No.
· Lead interruptions
01 BATTERY VOLTAGE - injector relay
K 43 / Ter. 8 (+) to injectors
02 TPS SIGNAL - control unit K
61 / Ter. 16, Ter. 17, Ter. 34, Ter. 35 to injectors
05 INTAKE AIR TEMP.
06 COOLANT TEMP.
07 MASS AIR FLOW S.
17 ENGINE LOAD SIG. · Pressure regulator defective
19 FUEL PUMP RELAY · Injectors stick
28 ENGINE SPEED · Electromagnetic interference caused by
36 02 SENSOR - ignition leads
(reroute further away from wiring harness)
39 02 INTEGRATOR - alternator
(worn carbon brushes produce sparks)
40 02 BLM IDLE THR. · Control unit K 61 defective
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