Suzuki Wagon R Manual page 3682

ENGINE GENERAL INFORMATION AND
(Z10XEP AND Z12XEP ENGINES)
WARNING:
For vehicles equipped with a Supplemental Restraint (Air Bag) System:
• Service on and around the air bag system components or wiring must be performed only by an
authorized SUZUKI dealer. Refer to "Air Bag System Components and Wiring Location View" under
"General Description" in air bag system section in order to confirm whether you are performing ser-
vice on or near the air bag system components or wiring. Please observe all WARNINGS and "Pre-
cautions" under "On-Vehicle Service" in air bag system section before performing service on or
around the air bag system components or wiring. Failure to follow WARNINGS could result in unin-
tentional activation of the system or could render the system inoperative. Either of these two condi-
tions may result in severe injury.
• Technical service work must be started at least 90 seconds after the ignition switch is turned to the
"LOCK" position and the negative cable is disconnected from the battery. Otherwise, the system
may be activated by reserve energy in the Sensing and Diagnostic Module (SDM).
General Information ....................................... 6-4-3
Statement of Cleanliness and Care ............. 6-4-3
General Information on Engine Service ....... 6-4-3
Precaution on fuel system service............ 6-4-4
Fuel pressure relief procedure ................. 6-4-4
Fuel leakage check procedure ................. 6-4-5
Engine Diagnosis ........................................... 6-4-6
General Description ..................................... 6-4-6
Precaution in Diagnosing Trouble ................ 6-4-7
Diagnostic Trouble Code (DTC) Check........ 6-4-8
Diagnostic Trouble Code (DTC)
Clearance ..................................................... 6-4-8
A: Diagnostic System Check ........................ 6-4-9
B-01: Diagnostic Trouble Code .................. 6-4-11
B-02: Data List ........................................... 6-4-13
B-03: Connect Scan Tool and Establish
Communication .......................................... 6-4-22
B-04: Symptom Chart / Customer
Complaint ................................................... 6-4-22
B-05: Complaint: Engine Start.................... 6-4-22
B-06: Complaint: Engine Operation ........... 6-4-22
B-07: No Matching Customer Complaint.... 6-4-23
B-08: Check: Intake - Air System ............... 6-4-23
B-09: Check: Exhaust System ................... 6-4-24
B-10: Fuel System...................................... 6-4-24
B-11: Mechanical Function Check ............. 6-4-25
B12: Actuator Test ..................................... 6-4-25
ENGINE GENERAL INFORMATION AND DIAGNOSIS (Z10XEP AND Z12XEP ENGINES) 6-4-1
SECTION 6-4
DIAGNOSIS
CONTENTS
B-13: Additional Functions ......................... 6-4-31
B-14: Programming.................................... 6-4-31
B-15: Control Test...................................... 6-4-32
B-16: Check: Knock Sensor....................... 6-4-34
B-17: Check: Misfire................................... 6-4-35
B-18: Mechanical Function Check
(Twinport)................................................... 6-4-35
B-19: Check: Intermittent Faults ................ 6-4-36
C-01: No Communication between Scan
tool and Control Module............................. 6-4-37
C-02: Control Module Hard- and
Software..................................................... 6-4-45
C-03: Power Supply Circuit........................ 6-4-45
C-04: Crankshaft Sensor Circuit ................ 6-4-52
C-05: Fuel Pump Relay Circuit .................. 6-4-54
C-06: Pedal Position Sensor Circuit........... 6-4-59
C07: Throttle Position Motor Control
Circuit......................................................... 6-4-69
C-08: Mass Air Flow Circuit ....................... 6-4-74
C-09: Engine Coolant Temperature
Sensor Circuit ............................................ 6-4-78
C-10: Intake Air Temperature
Sensor Circuit ............................................ 6-4-80
C-11: Air Conditioning System Information
Switch Circuit ............................................. 6-4-82
C-12: Air Conditioning System Refrigerant
Pressure Sensor ........................................ 6-4-84
6C3
6E3
6B3
6C3
6E3
6G3
6H3
6K3
6-4