YH4
GRAND
VITARA
6-46
ENGINE 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 displayed on scan
tool. (Refer to “Scan Tool Data” for normal value.)
Is normal value indicated?
Intermittent trouble.
Check for intermit-
tent 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 C32-3
of MAF sensor coupler and ground.
Is voltage 10 – 14 V?
Go to Step 4.
Faulty “Bl / B” wire.
4
MAF sensor output voltage Check:
1) With ignition switch OFF, connect MAF sensor
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
connection.
If OK, substitute
a known-good
ECM (PCM) and
recheck.
Faulty “V / W” wire.
Poor C32 coupler
terminal connection.
If wire and connec-
tion are OK, substi-
tute a known-good
MAF sensor and
recheck.
Содержание 2000 Grand Vitara SQ416
Страница 75: ...ENGINE DIAGNOSIS G16 J20 ENGINES 6 71 Fig 1 for Step 3...
Страница 179: ...6 1 68 ENGINE H25 ENGINE a Fig for STEP 2 3 a HO2S heater relay...
Страница 190: ...ENGINE H25 ENGINE 6 1 79 a Fig for STEP 2 3 a HO2S heater relay...
Страница 205: ...6 1 94 ENGINE H25 ENGINE Fig for STEP 4 1 Disconnected CMP sensor coupler 2 BI B wire terminal 3 Gr Y wire terminal...
Страница 541: ...6E1 4 ENGINE AND EMISSION CONTROL SYSTEM G16 J20 ENGINES G16 ENGINE...
Страница 542: ...ENGINE AND EMISSION CONTROL SYSTEM G16 J20 ENGINES 6E1 5...
Страница 543: ...6E1 6 ENGINE AND EMISSION CONTROL SYSTEM G16 J20 ENGINES J20 ENGINE...
Страница 544: ...ENGINE AND EMISSION CONTROL SYSTEM G16 J20 ENGINES 6E1 7...
Страница 549: ...Or W Bl G Bl Y C51 1 22 C51 1 23 C51 1 10 C51 1 11 6E1 12 ENGINE AND EMISSION CONTROL SYSTEM G16 J20 ENGINES...
Страница 552: ...ENGINE AND EMISSION CONTROL SYSTEM G16 J20 ENGINES 6E1 15...
Страница 592: ...6E2 4 ENGINE AND EMISSION CONTROL SYSTEM H25 ENGINE...
Страница 593: ...ENGINE AND EMISSION CONTROL SYSTEM H25 ENGINE 6E2 5...
Страница 597: ...ENGINE AND EMISSION CONTROL SYSTEM H25 ENGINE 6E2 9...
Страница 661: ...IGNITION SYSTEM FOR J20 H25 ENGINES 6F2 13 INSTALLATION For installation reverse removal procedure...
Страница 723: ...6H 30 CHARGING SYSTEM 17 Make sure that rotor turns smoothly...
Страница 729: ...Prepared by Overseas Service Department 1st Ed April 2000 Printed in Japan Printing April 2000 736...