Diagnostic Manual, Engines, Volume 2
Diagnosis - Complaint Related Diagnostic Chart 2)
| Complaint/Problem |
Possible cause |
Test step/Remedy 1) |
| Engine does not start or starts poorly i.e. does not run. |
Rest position of air flow sensor plate.
ECT sensor.
After-start enrichment.
Fuel pressures. |
Repair instructions 07.3 - 1612,
 23  13.0 ,
34 2.0 ,
32 4.0 |
| Engine is sluggish (poor transition) |
VAF sensor position indicator.
Fuel pressures.
ECT sensor. |
23 14.0 ,
32 4.0
23 13.0 , |
| Insufficient engine output |
Fuel pressures.
WOT/CTP switch, full load/idle
Mixture control (lambda) |
32 4.0
26 12.0 ,
See DM, Engines,
Volume 1 - B 2 31 6 |
1) Observe Preparation for Test, see 22 .
2) The following conditions must be met in order to use the Diagnostic Chart:
 The ignition system and the engine must be in proper operating condition,
All electrical connectors must fit properly,
Prescribed reference resistor must be installed. |
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