Suzuki 2006 SX4, Service Manual

Page: 39 / 1478

Table of Contents 1- i
1
Section 1
CONTENTS
Engine
Precautions .................................................1-1
Precautions............................................................. 1-1
Precautions for Engine.......................................... 1-1
Engine General Information and
Diagnosis ................................................. 1A-1
Precautions...........................................................1A-1
Precautions on Engine Service ........................... 1A-1
Precaution on On-Board Diagnostic (OBD)
System .............................................................. 1A-1
Precautions in Diagnosing Trouble ..................... 1A-1
Precautions for DTC Troubleshooting................. 1A-2
Precautions of ECM Circuit Inspection................ 1A-2
Precautions of Electric Throttle Body System
Calibration......................................................... 1A-2
Precaution on CAN Troubleshooting .................. 1A-3
General Description .............................................1A-4
Statement on Cleanliness and Care ................... 1A-4
Engine Diagnosis General Description ............... 1A-5
On-Board Diagnostic System Description........... 1A-5
DLC (Data Link Connector)................................. 1A-7
Engine and Emission Control System
Description ........................................................ 1A-7
CAN Communication System Description........... 1A-8
Air Intake System Description........................... 1A-10
Description of Electric Throttle Body System .... 1A-11
Description of Electric Throttle Body System
Calibration.......................................................1A-12
A/F Sensor Description ..................................... 1A-12
Electronic Control System Description.............. 1A-13
Engine and Emission Control Input / Output
Table ............................................................... 1A-18
Schematic and Routing Diagram......................1A-22
Engine and Emission Control System
Diagram ..........................................................1A-22
Component Location .........................................1A-24
Electronic Control System Components
Location ..........................................................1A-24
Diagnostic Information and Procedures..........1A-25
Engine and Emission Control System Check.... 1A-25
Malfunction Indicator Lamp (MIL) Check .......... 1A-28
DTC Check .......................................................1A-29
DTC Clearance ................................................. 1A-29
Troubleshooting for Communication Error
with Scan Tool Using CAN..............................1A-29
DTC Table.........................................................1A-34
Fail-Safe Table..................................................1A-40
Scan Tool Data .................................................1A-42
Visual Inspection ...............................................1A-47
Engine Basic Inspection....................................1A-47
Engine Symptom Diagnosis ..............................1A-49
MIL Does Not Come ON with Ignition Switch
ON and Engine Stop (but Engine Can Be
Started) ...........................................................1A-55
MIL Remains ON after Engine Starts................1A-57
DTC P0030: HO2S Heater Control Circuit
(Sensor-1, Bank-1)..........................................1A-58
DTC P0031 / P0032: HO2S Heater Control
Circuit Low / High (Sensor-1, Bank-1).............1A-59
DTC P0037 / P0038: HO2S Heater Control
Circuit Low / High (Sensor-2, Bank-1).............1A-61
DTC P0101: Mass or Volume Air Flow Circuit
Range / Performance ......................................1A-62
DTC P0102 / P0103: Mass or Volume Air
Flow Circuit Low / High Input ..........................1A-64
DTC P0111: Intake Air Temperature Sensor 1
Circuit Range / Performance...........................1A-66
DTC P0112 / P0113: Intake Air Temperature
Sensor Circuit Low / High Input.......................1A-66
DTC P0116: Engine Coolant Temperature
Circuit Range / Performance...........................1A-68
DTC P0117 / P0118: Engine Coolant
Temperature Circuit Low / High ......................1A-70
DTC P0122 / P0123: Throttle / Pedal Position
Sensor / Switch “A” Circuit Low / High ............1A-71
DTC P0131 / P0132: O2 Sensor Circuit Low
Voltage / High Voltage (Sensor-1, Bank-1) .....1A-74
DTC P0133: O2 Sensor Circuit Slow
Response / Performance (Sensor-1, Bank-
1) .....................................................................1A-75
DTC P0134: O2 Sensor Circuit No Activity
Detected (Sensor-1, Bank-1) ..........................1A-77
DTC P0137 / P0138: O2 Sensor (HO2S)
Circuit Low Voltage / High Voltage (Sensor-
2, Bank-1)........................................................1A-78
DTC P0140: O2 Sensor (HO2S) Circuit No
Activity Detected (Sensor-2, Bank-1) ..............1A-80