ENGINE GENERAL INFORMATION AND DIAGNOSIS (H25 ENGINE) 6-1-87
DTC P0154 (Vehicle without Diagnosis Connector)/P0150 (Vehicle with Diag-
nosis Connector) HO2S (Bank-2 Sensor-1) No Activity Detected (DTC No.26)
WIRING DIAGRAM
Refer to DTC P0150.
DTC DETECTING CONDITION AND TROUBLE AREA
DTC CONFIRMATION PROCEDURE
• Intake air temperature : between –14°C and 70°C (6.8°F and 158°F)
• Atmospheric pressure : higher than 560 mmHg (Altitude : lower than 2790 m (9150 ft))
• Following DTCs are not detected : P0100 (No.33, 34), P0115 (No.14, 15) and P0135
1) With ignition switch OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC by using scan tool if any.
3) Start engine and warm up to normal operating temperature (Run engine for 2 min. or more).
4) Increase vehicle speed to 65 – 80 km/h (40 – 50 mph).
5) Keep above vehicle speed for 2 min. (Throttle valve operating is kept constant in this step.)
6) Stop vehicle and check DTC and pending DTC by using scan tool.
DTC TROUBLESHOOTING
DTC DETECTING CONDITION
TROUBLE AREA
HO2S voltage is lower than 0.5 V.
HO2S
HO2S circuit
Fuel injector
Fuel pressure control system
ECM (PCM)
NOTE:
Check to make sure that following conditions are satisfied when using this DTC CONFIRMATION PRO-
CEDURE.
WARNING:
• When performing a road test, select a place where there is no traffic or possibility of a traffic acci-
dent and very careful during to avoid occurrence of an accident.
• Road test, should be carried out with 2 person, a driver and tester, on a level road.
Step
Action
Yes
No
1
Was “Engine Diag. Flow Table” performed?
Go to Step 2.
Go to “Engine Diag.
Flow Table”.
2
HO2S Voltage check :
1) With ignition switch OFF, install scan tool.
2) Operate engine for 60 sec. or more with follow-
ing condition.
Engine coolant temp. > 70°C
Engine speed > 2000 r/min.
3) With above condition, check “O2S B2 S1”
(HO2S voltage) displayed on scan tool.
Does above voltage deflect over and under 0.5 V?
Intermittent trouble.
If OK, substitute a known-
good ECM (PCM) and
recheck.
Go to Step 3.
Содержание Engine 2002 GRAND VITARA SQ625
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Страница 274: ...ENGINE GENERAL INFORMATION AND DIAGNOSIS H25 ENGINE 6 1 133 Fig and Table for Step 3...
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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...