Suzuki GRAND VITARA XL-7 User Manual

ENGINE GENERAL INFORMATION AND DIAGNOSIS (H27 ENGINE) 6-1-77
TROUBLESHOOTING
Step Action Yes No
1 Was “ENGINE DIAG. FLOW TABLE” per-
formed?
Go to Step 2. Go to “ENGINE DIAG.
FLOW TABLE” in this
section.
2 Is there DTC (s) other than “DTC P0171/
P0172”?
Go to applicable DTC
FLOW TABLE.
Go to Step 3.
3 Check intake system and exhaust system for
leakage.
Are intake system and exhaust system in good
condition?
Go to Step 4. Repair or replace.
4 Check fuel pressure referring to “TABLE B-3” in
this section.
Is check result satisfactory?
Go to Step 5. Repair or replace.
5 Check fuel injectors referring to “FUEL INJEC-
TOR INSPECTION” in Section 6E2.
Is check result satisfactory?
Go to Step 6. Faulty injector (s).
6 Check fuel level sensor referring to “FUEL
LEVEL SENSOR” in Section 6E2.
Is check result satisfactory?
Go to Step 7. Faulty fuel level sensor or
its circuit.
7 Check MAF sensor for performance referring to
“MASS AIR FLOW SENSOR” in Section 6E2.
Is check result satisfactory?
Go to Step 8. Faulty MAF sensor or its
circuit.
8 Check ECT sensor referring to Section 6E2.
Is check result satisfactory?
Go to Step 9. Faulty ECT sensor.
9 Check HO2S-1 referring to “DTC P0130 DIAG.
FLOW TABLE”.
Is check result satisfactory?
Substitute a known-good
ECM (PCM) and recheck.
Faulty HO2S-1.

Suzuki GRAND VITARA XL-7 Specifications

General

Brand	Suzuki
Model	GRAND VITARA XL-7
Category	Automobile
Language	English