Table Of Contents - Suzuki 2000 Grand Vitara SQ625 Service Manual

6-2 ENGINE GENERAL INFORMATION AND DIAGNOSIS (G16 / J20 ENGINES)
GENERAL INFORMATION
ENGINE DIAGNOSIS
General Description . . . . . . . . . . . . . . . . . . . .
On-Board Diagnostic System
Precaution in Diagnosing Trouble
Engine Diagnostic Flow Table
Customer Problem Inspection Form
Malfunction Indicator Lamp
(MIL) Check . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC)
Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC)
Clearance . . . . . . . . . . . . . . . . . . . . . . . . . .
Fail-Safe Table . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code (DTC) Table
Scan Tool Data . . . . . . . . . . . . . . . . . . . . . . .
Visual Inspection . . . . . . . . . . . . . . . . . . . . .
Engine Basic Check
Engine Diagnosis Table
Inspection of PCM (ECM) and Its
Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage Check . . . . . . . . . . . . . . . . . . . . .
Resistance Check
Table A-1 MIL Circuit Check
(MIL does not come ON)
Table A-2 MIL Circuit Check
(MIL remains ON)
Table A-3 MIL Circuit Check
(MIL flashes) . . . . . . . . . . . . . . . . . . . . . . .
Table A-4 MIL Circuit Check
(MIL does not flash or just remains
ON) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table A-5 ECM (PCM) Power and
Ground Circuit Check
DTC P0100 (DTC No.33, 34) MAF
Circuit Malfunction
DTC P0110 (DTC No.23, 25)
IAT Circuit Malfunction
DTC P0115 (DTC No.14, 15) Engine
Coolant Temp. Sensor Circuit
Malfunction . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0120 (DTC No.21, 22) TP
Circuit Malfunction
DTC P0121 TP Range/Performance
Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0130 (DTC No.13) HO2S-1
Circuit Malfunction
DTC P0133 HO2S-1 Circuit Slow
Response . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0134 HO2S-1 No Activity
Detected . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0135 HO2S-1 Heater Circuit
Malfunction . . . . . . . . . . . . . . . . . . . . . . . . .
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CONTENTS
6- 3 DTC P0136 HO2S-2 Circuit
Malfunction
6- 6
DTC P0141 HO2S-2 Heater Circuit
6- 6
Malfunction
6- 6
DTC P0171 Fuel System too Lean or
6- 11
DTC P0172 Fuel System too Rich
6- 12
DTC P0300 Random Misfire Detected,
6- 14
DTC P0301 Cylinder 1 Misfire Detected,
DTC P0302 Cylinder 2 Misfire Detected,
DTC P0303 Cylinder 3 Misfire Detected
6- 15
or DTC P0304 Cylinder 4 Misfire
Detected
6- 15
DTC P0325 (DTC No.43) Knock
Sensor Circuit Malfunction
6- 16
DTC P0335 CKP Sensor Circuit
6- 17
Malfunction
6- 18
DTC P0340 (DTC No.42) CMP Sensor
6- 21
Circuit Malfunction
6- 27
DTC P0400 EGR Flow Malfunction
6- 28
DTC P0403 (DTC No.51) EGR Circuit
6- 29
Malfunction
DTC P0420 Catalyst System Efficiency
6- 34
Below Threshold
6- 34
DTC P0443 EVAP Control System
6- 40
Purge Control Valve Circuit
Malfunction
DTC P0500 (DTC No.24) Vehicle
6- 41
Speed Sensor Malfunction
DTC P0505 Idle Air Control System
6- 42
Malfunction
DTC P0601 (DTC No.71) Internal
6- 42
Control Module Memory Check Sum
Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1408 Manifold Absolute Pressure
6- 42
Sensor Circuit Malfunction
DTC P1450 Barometric Pressure Sensor
6- 43
Circuit Malfunction
DTC P1451 Barometric Pressure Sensor
6- 45
Performance Problem
DTC P1500 Engine Starter Signal Circuit
6- 47
Malfunction
DTC P1510 ECM Back-Up Power
Supply Malfunction
6- 49
Table B-1 Fuel Pump Circuit
Inspection
6- 51
Table B-2 Fuel Injectors and Circuit
Inspection
6- 53
Table B-3 Fuel Pressure Inspection
6- 55 Table B-4 Idle Air Control System
Inspection
6- 58 Table B-5 A/C Signal Circuits Inspection
Table B-6 A/C Condenser Fan Motor
6- 59 Relay Control System Inspection
SPECIAL TOOLS
6- 60
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