2005 SUZUKI JIMNY valve

Downloaded from www.Manualslib.com manuals search engine POWER STEERING (P/S) SYSTEM (If equipped) 3B1-15
Check free length of relief valve spring (1).
Replace pump assembly if any defective is found.
Relief valve spring free length
Standard : 36.5 mm (1.44 in.)
Limit : 33.5 mm (1.32 in.)
ASSEMBLY
Reverse disassembly procedure for assembly, noting the follow-
ing.
1) Apply power steering fluid to shaft (2) outer surface and
grease to oil seal lip (1) and insert it from oil seal side.
“A” : Grease 99000-25010
2) Apply power steering fluid to O-rings and fit them to pump
body.
3) Install side plate (2) to pump body.
4) Apply power steering fluid to sliding surface of rotor (1).
5) Install rotor (1) to shaft, directing “dot” (2) marked side of
rotor toward pump cover (facing up).
6) Install new snap ring to shaft, then make sure to fit snap ring
into shaft groove securely.
NOTE:
Carefully align the dowel pins (3) on the side plate (2) at
bolt hole (1) as shown in figure.
NOTE:
Never reuse the removed snap ring.

Downloaded from www.Manualslib.com manuals search engine POWER STEERING (P/S) SYSTEM (If equipped) 3B1-17
16) Apply power steering fluid to relief valve (flow control valve)
(1).
17) Install relief valve (flow control valve) (1) to pump body.
18) Apply power steering fluid to O-ring of plug (3).
19) Install O-ring to plug (3).
20) Tighten plug to specified torque.
Tightening torque
Plug
(a) : 60 N·m (6.0 kg-m, 43.5 lb-ft)
21) Apply power steering fluid to O-rings of pressure switch (1).
22) Install O-rings to pressure switch (1).
23) Install pressure switch (1) to pump body.
Tightening torque
Pressure switch
(a) : 28 N·m (2.8 kg-m, 20.0 lb-ft)
24) Apply power steering fluid to O-ring (2) of suction connector
(1).
25) Install O-ring (2) to suction connector (1).
26) Install suction connector (2) to pump body as shown in fig-
ure. Tighten suction connector bolt (3) to specified torque.
Tightening torque
Suction connector bolt
(a) : 12 N·m (1.2 kg-m, 8.5 lb-ft) NOTE:
Check that relief valve (flow control valve) slides
smoothly.
2. Flow control valve spring
1. P/S pump

Downloaded from www.Manualslib.com manuals search engine 3D-2 FRONT SUSPENSION
General Description
4WD Control System
The 4WD control system consists of a 4WD switch, a vacuum switch, a vacuum tank, two vacuum switching
valves (VSV1 and VSV2) and air locking hub assemblies.
The 4WD controller controls locking or unlocking of the air locking hub according to operation of the transfer shift
control lever.
Vacuum generated in the intake manifold passes through the check valve and stored in the vacuum tank.
According to signals from the 4WD switch, the 4WD controller activates VSV1 (for unlocking) or VSV2 (for lock-
ing) to apply vacuum from the vacuum tank so that the front axle and the wheel hub are disengaged or engaged.
1. Front axle housing 3. Steering knuckle 5. Wheel spindle 7. Wheel bearing
2. Shock absorber 4. Kingpin 6. Wheel hub 8. Front axle shaft (4WD)

Downloaded from www.Manualslib.com manuals search engine FRONT SUSPENSION 3D-3
1. Air locking hub assembly 4. VSV2 7. 4WD controller 10. 4WD indicator light 13. ABS controller
2. VSV1 5. Vacuum accumulation tank 8. Intake manifold 11. 4WD switch 14. Transfer
3. Check valve 6. Vacuum switch 9. Wheel spindle 12. Combination meter

Downloaded from www.Manualslib.com manuals search engine 3D-6 FRONT SUSPENSION
OPERATION
2WD
→ 4WD
When the transfer shift control lever is shifted from the 2WD (2H) position to the 4WD (4H or 4L) position, a 4WD
“ON” signal is transmitted to the 4WD controller which then activates VSV2 to apply vacuum in the intake mani-
fold to the chamber “B” in the hub housing.
When vacuum is applied, the slide gear is separated from the magnet, moves toward the center of the vehicle
body and gets engaged with the outer gear. In this way, the front axle shaft and the front wheel hub rotate as one
unit.
If vacuum in the circuit fails to reach 260 mmHg within 15 seconds after operation of VSV2 due to such trouble
as a hole in the vacuum pipe, the slide gear does not operate and the 4WD indicator light flashes to warn that
the hub is unlocked.
1. ECM 8. Engine speed signal 15. Chamber B 22. Slide gear
2. 4WD controller 9. Intake manifold 16. Piston A 23. Wheel hub
3. 4WD indicator lamp 10. Check valve 17. Magnet 24. Spindle
4.4WD switch 11. Vacuum tank 18. Housing 25. Front axle shaft
5. A/C switch (if equipped) 12. VSV1 19. Spring 26. To opposite side
6. Vacuum switch 13. VSV2 20. Diaphragm 27. A/C controller
7. A/C cut signal (if equipped) 14. Outer gear 21. Sleeve A: Vacuum circuit

Downloaded from www.Manualslib.com manuals search engine FRONT SUSPENSION 3D-7
4WD
→ 2WD
When the transfer shift control lever is shifted from the 4WD (4H or 4L) to the 2WD (2H) position, the 4WD con-
troller activates VSV1 and the intake manifold vacuum is applied to the chamber “A” in the hub housing. As the
slide gear is shifted to the wheel side by the vacuum force and disengaged from the outer gear, rotation of the
front wheel hub is not transmitted to the front axle shaft.
1. EPI & A/C controller 8. Engine speed signal 15. Chamber A 22. Slide gear
2. 4WD controller 9. Intake manifold 16. Piston A 23. Wheel hub
3. 4WD indicator lamp 10. Check valve 17. Magnet 24. Spindle
4.4WD switch 11. Vacuum tank 18. Housing 25. Front axle shaft
5. A/C switch (if equipped) 12. VSV1 19. Spring 26. To opposite side
6. Vacuum switch 13. VSV2 20. Diaphragm 27. A/C controller
7. A/C cut signal (if equipped) 14. Outer gear 21. Sleeve A: Vacuum circuit

Downloaded from www.Manualslib.com manuals search engine 3D-8 FRONT SUSPENSION
Diagnosis
Diagnosis Table
For description not found in the table below, refer to “Diagnosis Table” in Section 3.
4WD CONTROL SYSTEM
4WD CONTROL SYSTEM DIAGNOSTIC FLOW TABLE
Before performing the trouble diagnosis, check that the air locking hub assemblies are in good condition and
there is no air leakage from vacuum hoses and vacuum pipe. Refer to “4WD Control System Check” in this sec-
tion for air leakage.
[NOTES ON SYSTEM CIRCUIT INSPECTION]
Be sure to read “Precautions for Electrical Circuit Service” in Section 0A before circuit inspection and
observe what is written there.
For system circuit, refer to the figure of “System Circuit” in this section. Condition Possible Cause Correction
4WD Indicator light
flashingHub locking procedure error
Defective VSV2
Defective vacuum switch
Defective check valve or vacuum tank
Air leak from vacuum circuit
Clogged vacuum hose or pipe
Faulty 4WD controllerShift transfer shift control lever
2WD → 4WD once again
Replace
Replace
Replace
Check and repair
Replace
Check and replace
2WD/4WD switching
errorDefective air locking hub assembly
Abnormality in 4WD control system
Air leakage from vacuum circuit
Clogged vacuum hose or pipe
Defective check valve or vacuum tankReplace
Inspect referring to “4WD Control
System Diagnostic Flow Table”
Check and replace
Replace
Replace
Step Action Yes No
1 Check ground circuit.
1) Disconnect coupler from 4WD controller
with ignition switch OFF.
2) Check for proper connection to 4WD con-
troller at all terminals.
3) If OK, check continuity between A5 terminal
and body ground.
Is there continuity between A5 terminal and
body ground?Go to Step 2.“B” wire is open.
2 Check power circuit.
1) Disconnect coupler from 4WD controller.
2) Turn ignition switch ON.
3) Check voltage between A10 terminal and
ground.
Is it 10 – 14 V?Go to Step 3.“Y/R” circuit is open or
short.

Downloaded from www.Manualslib.com manuals search engine FRONT SUSPENSION 3D-13
CHECK VALVE
1) Remove check valve (1).
2) Close B side of check valve with finger as shown and apply
–50 cmHg vacuum by means of vacuum pump. Then check
that vacuum is applied. Apply vacuum to another side of
check valve and check that vacuum is not applied.
Replace if defective.
Special tool
(A) : 09917-47910
Stabilizer bar / bushing check
BAR
Inspect for damage or deformation. If defective, replace.
BUSHING
Inspect for damage, wear or deterioration. If defective, replace.
A : Intake manifold side
B : Vacuum switching valve side