6-62 ENGINE GENERAL INFORMATION AND DIAGNOSIS (G16/J20 ENGINES)
TROUBLESHOOTING
Step
Action
Yes
No
1
Was “Engine Diag. Flow Table” performed?
Go to Step 2.
Go to “Engine Diag. Flow
Table”.
2
MAF sensor Check :
1) Connect scan tool to DLC with ignition
switch OFF.
2) Start engine and check MAF value dis-
played on scan tool. (Refer to “Scan Tool
Data” for normal value.)
Is normal value indicated?
Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection” in
Section 0A.
Go to Step 3.
3
MAF sensor power supply Check :
1) With ignition switch OFF, disconnect MAF
sensor coupler.
2) With ignition switch ON, check voltage
between “BLU/BLK” wire terminal of MAF
sensor coupler and ground.
Is voltage 10 – 14 V?
Go to Step 4.
Faulty “BLU/BLK” wire.
4
MAF sensor output voltage Check :
1) With ignition switch OFF, connect MAF sen-
sor coupler.
2) Remove ECM (PCM) cover.
3) With ignition switch ON leaving engine OFF,
check voltage between C51-3-10 and C51-
3-5 terminal.
Is voltage 1.0 – 1.6 V?
Poor C51-3-10 connec-
tion.
If OK, substitute a known-
good ECM (PCM) and
recheck.
Faulty “PPL/WHT” wire.
Poor MAF sensor coupler
terminal connection. If
wire and connection are
OK, substitute
a known-good MAF sen-
sor and recheck.
Содержание Engine 2002 GRAND VITARA SQ625
Страница 5: ......
Страница 248: ...ENGINE GENERAL INFORMATION AND DIAGNOSIS H25 ENGINE 6 1 107 Fig for Step 4...
Страница 274: ...ENGINE GENERAL INFORMATION AND DIAGNOSIS H25 ENGINE 6 1 133 Fig and Table for Step 3...
Страница 291: ...6 1 150 ENGINE GENERAL INFORMATION AND DIAGNOSIS H25 ENGINE...
Страница 360: ...ENGINE MECHANICAL G16 ENGINE 6A1 69 Main Bearings Crankshaft and Cylinder Block COMPONENTS...
Страница 489: ...6A2 114 ENGINE MECHANICAL H25 ENGINE...
Страница 572: ...ENGINE MECHANICAL J20 ENGINE 6A4 83 Main Bearings Crankshaft and Cylinder Block COMPONENTS...
Страница 591: ...6A4 102 ENGINE MECHANICAL J20 ENGINE...
Страница 598: ...ENGINE COOLING 6B 7...
Страница 623: ...6B 32 ENGINE COOLING...
Страница 635: ...6E1 4 ENGINE AND EMISSION CONTROL SYSTEM G16 J20 ENGINES ENGINE AND EMISSION CONTROL SYSTEM DIAGRAM FOR G16 ENGINE...
Страница 637: ...6E1 6 ENGINE AND EMISSION CONTROL SYSTEM G16 J20 ENGINES ENGINE AND EMISSION CONTROL SYSTEM DIAGRAM FOR J20 ENGINE...
Страница 643: ...6E1 12 ENGINE AND EMISSION CONTROL SYSTEM G16 J20 ENGINES ELECTRONIC CONTROL SYSTEM COMPONENT LOCATION FOR G16 ENGINE...
Страница 645: ...6E1 14 ENGINE AND EMISSION CONTROL SYSTEM G16 J20 ENGINES ELECTRONIC CONTROL SYSTEM COMPONENT LOCATION FOR J20 ENGINE...
Страница 693: ...6E1 62 ENGINE AND EMISSION CONTROL SYSTEM G16 J20 ENGINES...
Страница 697: ...6E2 4 ENGINE AND EMISSION CONTROL SYSTEM H25 ENGINE ENGINE AND EMISSION CONTROL SYSTEM DIAGRAM...
Страница 743: ...6E2 50 ENGINE AND EMISSION CONTROL SYSTEM H25 ENGINE...
Страница 814: ...CHARGING SYSTEM 6H 21 Disassembly 70 A and 80 A types...
Страница 827: ...6H 34 CHARGING SYSTEM...
Страница 833: ...6K 6 EXHAUST SYSTEM...
Страница 834: ...Prepared by 1st Ed Dec 2002 Printed in Japan 824...