Suzuki GRAND VITARA JB416 Service Manual page 116

3-ii Table of Contents
Function of 4WD Control System
Component .......................................................3C-6
4WD Control System Operation..........................3C-6
4WD Control System Wiring Circuit Diagram....3C-11
Terminal Arrangement of 4WD Control
Module ............................................................3C-12
Input / Output Signal Table of 4WD Control
Module ............................................................3C-12
On-Board Diagnostic System Description.........3C-13
CAN Communication System Description.........3C-14
Diagnostic Information and Procedures..........3C-14
4WD Control System Check .............................3C-14
Transfer Position Indicator Operation Check ....3C-17
4WD Control System Operation Inspection ......3C-17
Visual Inspection ...............................................3C-18
DTC Check........................................................3C-19
DTC Clearance .................................................3C-20
DTC Table.........................................................3C-20
Fail-Safe Table..................................................3C-21
Scan Tool Data .................................................3C-22
Scan Tool Data Definitions................................3C-22
4WD Control Symptom Diagnosis.....................3C-23
Transfer Position Indicator Does Not Come
ON at Ignition Switch ON but Engine Stops....3C-25
Transfer Position Indicator Remains ON
Steady at Ignition Switch ON ..........................3C-27
DTC C1213: Transfer Switch Circuit Open .......3C-28
DTC C1214: Transfer Switch Circuit Short .......3C-29
DTC C1223 / C1235: Transfer Shift
Actuator Motor Position Switch 1 Circuit
Open / Transfer Shift Actuator Motor Position
Switch 2 Circuit Open .....................................3C-31
DTC C1224 / C1236: Transfer Shift
Actuator Motor Position Switch 1 Circuit
Short / Transfer Shift Actuator Motor Position
Switch 2 Circuit Short......................................3C-33
DTC C1227: 4L/N Switch Circuit Open .............3C-35
DTC C1228: 4L/N Switch Circuit Short .............3C-36
DTC C1230: Transfer Actuator Circuit
Malfunction......................................................3C-38
DTC C1237: Center Differential Lock Switch
Circuit Open ....................................................3C-40
DTC C1238: Center Differential Lock Switch
Circuit Short ....................................................3C-42
DTC C1240: 4WD Control Module Power
Supply Circuit Malfunction ..............................3C-44
DTC C1243: Internal Circuit Malfunction of
4WD Control Module.......................................3C-45
DTC C1246: Clutch Pedal Position (CPP)
Switch Circuit Short.........................................3C-45
DTC U1073: Control Module Communication
Bus Off ............................................................3C-47
DTC U1100: Lost Communication with ECM ....3C-50
DTC U1101: Lost Communication with TCM ....3C-51
DTC U1121: Lost Communication with ABS
/ Electronic Stability Program Hydraulic Unit
/ Control Module..............................................3C-52
Inspection of 4WD Control Module and Its
Circuits ............................................................3C-53
Repair Instructions ............................................3C-55
Transfer Oil Level Check...................................3C-55
Transfer Oil Change..........................................3C-55
Transfer Oil Seal Removal and Installation .......3C-56
Transfer Switch Removal and Installation .........3C-57
Transfer Switch Inspection................................3C-57
4WD Control Module Removal and
Installation .......................................................3C-57
Transfer Assembly Dismounting and
Remounting.....................................................3C-58
Transfer Assembly Components .......................3C-59
Transfer Assembly Disassembly and
Reassembly ....................................................3C-60
Transfer Assembly Inspection ...........................3C-68
Input Gear Assembly, Counter Gear
Assembly, Front Output Shaft Assembly
and Rear Output Shaft Assembly
Components....................................................3C-70
Input Gear Assembly Disassembly and
Reassembly ....................................................3C-70
Counter Gear Assembly Disassembly
and Reassembly .............................................3C-71
Front Output Shaft Assembly Disassembly
and Reassembly .............................................3C-72
Rear Output Shaft Assembly Disassembly
and Reassembly .............................................3C-73
Specifications .....................................................3C-74
Tightening Torque Specifications......................3C-74
Special Tools and Equipment ...........................3C-74
Recommended Service Material .......................3C-74
Special Tool ......................................................3C-74
Non-Shift Type (Transfer without Shift
Actuator) ..............................................................3C-76
Precautions.........................................................3C-76
Transfer Warning ..............................................3C-76
General Description ...........................................3C-76
Transfer Construction........................................3C-76
Diagnostic Information and Procedures ..........3C-77
Transfer Symptom Diagnosis............................3C-77
Repair Instructions ............................................3C-78
Transfer Oil Change..........................................3C-78
Transfer Oil Level Check...................................3C-78
Transfer Oil Seal Removal and Installation .......3C-78
Transfer Assembly Dismounting and
Remounting.....................................................3C-78
Transfer Assembly Components .......................3C-79
Transfer Assembly Disassembly and
Reassembly ....................................................3C-80
Input Gear Assembly Disassembly and
Reassembly ....................................................3C-86
Front Output Shaft Assembly Disassembly
and Reassembly .............................................3C-87
Rear Output Shaft Assembly Disassembly
and Reassembly .............................................3C-87
Specifications .....................................................3C-87
Tightening Torque Specifications......................3C-87
Special Tools and Equipment ...........................3C-87
Recommended Service Material .......................3C-87
Special Tool ......................................................3C-87