YH4
GRAND
VITARA
ENGINE (H25 ENGINE)
6-1-99
DTC DETECTING CONDITION AND TROUBLE AREA
DTC DETECTING CONDITION
TROUBLE AREA
Output waveform of HO2S (S-2) becomes similar to that of
HO2S (S-1).
TWC converter
Exhaust system
HO2S (SENSOR 2)
HO2S (SENSOR 2) circuit
ECM (PCM)
DTC CONFIRMATION PROCEDURE
NOTE:
Check to make sure that following conditions are satisfied when using this DTC CONFIRMATION PROCE-
DURE.
WARNING:
When performing a road test, select a place where there is no traffic or possibility of a traffic accident
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.
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), P0110 (No.23, 25), P0115 (No.14, 15), P0130, P0133,
P0134 (No.13), P0135, P0136, P0141, P0335, P0460, P0500 (No.24), P1450 and P1451
(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.
(4) Increase vehicle speed to 56 km / h (35 mph) or more.
(5) Keep above vehicle speed for 5 min. (Throttle valve operating is kept constant in this step.)
(6) Increase vehicle speed to 80 – 100 km / h (50 – 60 mph). (engine speed; 2500 – 3000 r / min.)
(7) Keep above vehicle speed for 1 min. (Throttle valve operating is kept constant in this step.)
(8) Stop vehicle and check DTC and pending DTC by using scan tool.
DTC TROUBLESHOOTING
STEP
ACTION
YES
NO
1
Was “ENGINE DIAG. FLOW TABLE” performed?
Go to Step 2.
Go to “ENGINE
DIAG. FLOW
TABLE”.
2
Exhaust System Visual inspection:
(1) Check exhaust system for leaks, damage and loose.
Is it in good condition?
Go to Step 3.
Repair or replace.
3
HO2S BANK-1 (BANK-2) SENSOR-2 Circuit check:
(1) Check “R / B” and “Gr / Y” wire (“R / Y” and “Gr / Y” wire).
Are they in good condition?
Go to Step 4.
Repair or replace.
4
(1) Replace BANK-1 (BANK-2) HO2S SENSOR-2.
(2) Perform DTC confirmation procedure.
Is DTC P0420 (P0430) detected?
Go to Step 5.
Faulty BANK-1
(BANK-2) HO2S
SENSOR-2.
5
(1) Replace BANK-1 (BANK-2) warm up TWC converter.
(2) Perform DTC confirmation procedure.
Is DTC P0420 (P0430) detected?
Substitute a known-
good ECM (PCM)
and recheck.
Replace TWC
converter.
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...