2005 SUZUKI JIMNY lock

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Components and Functions
Component Function
4WD switch When the transfer shift lever is shifted to 4L or 4H position from 2H, this switch
turns ON and cause the 4WD control system to turn ON.
4WD controller When the 4WD switch turns on, the 4WD controller activates VSV2 to lock the
air locking hubs and when it receives an “ON” signal from the vacuum switch, it
makes VSV2 to complete operation within 5 seconds and causes the 4WD indi-
cator light to light up.
If vacuum in the vacuum circuit fails to reach the specified level due to a leakage
in the vacuum circuit (when no “ON” signal is inputted from the vacuum switch),
the 4WD controller stops operation of VSV2 in 15 seconds and makes the 4WD
indicator light to flash to warn occurrence of a trouble.
When the 4WD switch turns off, the 4WD controller activates VSV1 for 10 sec-
onds to unlock the hubs and at the same time makes the 4WD indicator light
turn off.
VSV1 VSV1 operates according to the signal from the 4WD controller. When it is acti-
vated, the port opens and vacuum in the intake manifold is applied through the
vacuum circuit to unlock to the slide gear in the air locking hub. As a result, the
air locking hubs are unlocked.
VSV2 VSV2 operates according to the signal from the 4WD controller. When it is acti-
vated, the port opens and vacuum in the intake manifold is applied through the
vacuum circuit to lock to the slide gear in the air locking hub. As a result, the air
locking hubs are locked.
Vacuum switch When VSV2 receives the “ON” signal from 4WD switch, vacuum is applied
through its circuit to the vacuum switch. The vacuum switch turns on when it
detects vacuum exceeding 260 mmHg.
“4WD” indicator lamp It lights up when 4WD control system is in the 4WD mode.
It flashes to warn that locking hub operation has not completed (4WD control
system fails to shift 4WD).

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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

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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.

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4WD Control System Check
AIR LOCKING HUB
1) Start engine and shift transfer shift control lever to 2H posi-
tion.
2) Connect vacuum pump gauge (special tool) to the spindle
hose (2) which is disconnected from upper side pipe as
shown. Apply vacuum and check operating sound from air
locking hub (1).
If there is not operating sound, replace air locking hub
assembly.
Vacuum specification
More than 40 kPa (0.40 kg/cm
2, 5.70 Psi)
Special tool
(A) : 09917-47910
3) Connect hose, then start engine and shift transfer shift con-
trol lever to 4H or 4L position.
4) Connect vacuum pump gauge to the spindle hose (2) dis-
connected from lower side pipe.
Apply vacuum and check operating sound from air locking
hub (1).
If there is no operating sound, replace air locking hub
assembly.
Vacuum specification
More than 40 kPa (0.40 kg/cm
2, 5.70 Psi)
Special tool
(A) : 09917-47910
VSV1 AND VSV2
1) Disconnect coupler from VSV1 (1) (VSV2) (2) and check
resistance between two terminals of VSV1 (1) (VSV2) (2).
If resistance is out of specification, replace.
Resistance of VSV1 and VSV2
: 33 – 39
Ω

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Wheel Disc, Nut and Bearing Check
1) Inspect each wheel disc for dents, distortion and cracks.
Disc in badly damaged condition must be replaced.
2) Check wheel nuts for tightness and as necessary, retighten
them to specification.
Tightening torque
Wheel nuts
(a) : 95 N·m (9.5 kg-m, 69.0 lb-ft)
3) Check wheel bearing for wear. After retightening lock nut to
specified torque, apply dial gauge to wheel hub center and
measure thrust play.
Wheel bearing thrust play limit
: 0.05 mm (0.002 in)
When measurement exceeds limit, replace bearing.
4) By rotating wheel actually, check wheel bearing for noise and
smooth rotation. If defective, replace bearing.

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Front Shock Absorber
REMOVAL
1) Hoist vehicle.
2) Support front axle housing by using floor jack to prevent it
from lowering, refer to “When Using Floor Jack” under “Vehi-
cle Lifting Points” in Section 0A.
3) Remove shock absorber lower mounting bolt (6).
4) Remove shock absorber upper mounting lock nut (2) and
absorber nut (3). Then remove shock absorber (1).
INSTALLATION
Install removed parts in reverse order of removal proceeded, not-
ing the followings.
As shown in figure, install washer (4) and bush (5) first and
after tightening absorber nut (3) tighten lock nut (2) to speci-
fied torque.
Tightening torque
Shock absorber lock nut
(a) : 29 N·m (2.9 kg-m, 21.0 lb-ft)
Install absorber lower mounting bolt (6) in proper direction as
shown in the figure and tighten it with no load applied to axle
housing.
Tightening torque
Shock absorber lower nut
(b) : 90 N·m (9.0 kg-m, 65.0 lb-ft)
Confirm front end (wheel) alignment referring to “Preliminary
Checks Prior to Adjusting Front Alignment” in Section 3A.
Coil Spring
REMOVAL
1) Hoist vehicle and remove wheel.
2) Disconnect stabilizer ball joint from axle housing.
3) Remove brake caliper carrier bolts and suspend caliper.
W: Wheel side
7. Lower mounting nut
CAUTION:
During removal, be careful not to damage brake flexible
hose and wheel speed sensor harness (vehicle with ABS)
and not to depress brake pedal.

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4) Remove brake disc.
5) Remove front wheel bearing lock nut as follows.
For 2WD model :
a) Remove hub cap.
b) Remove front wheel bearing lock plate (1) by loosening 4
screws (2).
For 4WD model :
a) Remove air locking hub assembly (1).
b) Remove front axle shaft circlip and wheel spindle thrust
washer.
c) Uncaulk front wheel bearing lock nut. NOTE:
If brake disc can not be removed by hand, using 8 mm
bolts.
1. Wheel hub

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6) Remove front wheel bearing lock nut by using special tool.
Special tool
(A) : 09944-77020 (For 4WD)
(A) : 09951-16050 (For 2WD)
7) Remove front wheel bearing washer.
8) Remove wheel hub complete (1) with bearings (2) and oil
seal (4).
Special tool
(A) : 09943-35511 or 09943-35512
(B) : 09942-15510
9) Remove sensor rotor from wheel hub as shown (if equipped
with ABS).
10) Remove wheel bearing oil seal and circlip.
3. Circlip
NOTE:
If wheel hub can not be removed by hand, use special
tools as shown.
CAUTION:
Pull out sensor rotor from wheel hub gradually and
evenly.
Attempt to pull it out partially may cause it to be
deformed.
1. Sensor rotor
2. Wheel hub
3. Vise
4. Flat end rod