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Diagnostic Manual, Engines, Volume 2

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 3.1 LH Sequential Multiport Fuel Injectin System (LH-SFI)   >   12 Complaint Related Diagnostic Chart


Diagnosis - Complaint Related Diagnostic Chart

Complaint/Problem Possible cause Test step/Remedy 1)
Engine starts poorly No TN-signal (rpm signal) 23 12.0
Engine starts poorly and accelerates poorly Hot wire MAF sensor (B2/2) defective
ECT sensor (B11/2) defective
23 5.0 - 6.0
23 9.0 - 10.0
Engine does not start No voltage supply from base module (N16/1)
FP relay module (K27) defective

ECT sensor (B11/2) defective
Injector control and injection timing
23 1.0 - 4.0
23 8.0
34 2.0
23 9.0 - 10.0
23 33.0
Engine runs uneven at CTP (idle) EGR valve defective
Injector control and injection timing
23 22.0
23 33.0
Engine has uneven idle and insufficient engine output Camshaft timing adjustment defective 23 26.0 - 29.0
1) Observe Preparation for Test, see 22 .