2007 ISUZU KB P190 wheel

FRONT WHEEL DRIVE 4C1-69
6. FRONT WHEEL SHIMMY
Checkpoint Trouble Cause Countermeasure



Ball joint or bush

Replace the ball joint or bush

Worn


Front alignment

Adjust the front alignment


Adjust or replace


Incorrect


W orn or improperly adjusted

OK
OK NG
NG
NG
OK
W heel bearing

Tighten or replace

Loose or worn

NG

Shock absorber

Replace the shock absorber

Worn


Tire

Replace or adjust the inflation

W orn or improperly inflated

OK NG
NG
OK

Steering unit


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ISUZU KB P190 2007

4C1-70 FRONT WHEEL DRIVE
PROPELLER SHAFT 1. NOISE

Checkpoint Trouble Cause Countermeasure

Spider bearingReplaceWorn or jammed
ReplaceDamaged or worn
NG
NG
OKYoke spline



2. VIBRATION

Shaft balanceAdjustUnbalance
ReplaceIncorrect
NG
NG
OKShaft runout
Transmission rear housing
bushing, transfer case
housing bushing
ReplaceWorn
NG
OK
Yoke splineReplaceJammed
NG
OK



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ISUZU KB P190 2007

FRONT WHEEL DRIVE 4C1-71
SPECIAL SERVICE TOOL
ILLUSTRATION PART NO. PART NAME
5-8840-2309-0 Ft axle mount bushing installer & remover
5-8840-2745-0 Pliers
5-8840-00
13-0
(J-22888) Side bearing remover
9-852
1-1 743-0
(J-8 107-2) Side bearing plug adapter
5-8840-0
133-0
(J-86 14-0 1) Pinion flange holder

9-852
1-5032-0 Final pinion spindle
5-8840-00
15-0
(J-229 12-0 1) Separator
9-8522-
1141-0
(J-24256) Outer bearing outer race installer
5-8840-0007-0
(J-8092) Grip

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ISUZU KB P190 2007

4C1-72 FRONT WHEEL DRIVE
ILLUSTRATION PART NO. PART NAME
9-8522-
1274-0
(J-24252) Inner bearing outer race installer
5-8840-2085-0
(J-2 1777-42) Pilot
5-8840-2089-0
(J-23597-9) Nut & bolt
5-8840-2087-0
(J-23597-7) Gauge plate
5-8840-0
126-0
(J-800 1) Dial indicator
5-8840-0
128-0
(J-23597- 1) Arbor
5-8840-2088-0
(J-23597-8) Disc (2 pcs. required)
9-8522-
1165-0
(J-6 133-0 1) Pinion bearing installer (for 4W D)
9-8522-
1275-0
(J-24250) Pinion oil seal installer

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ISUZU KB P190 2007

FRONT WHEEL DRIVE 4C1-73
ILLUSTRATION PART NO. PART NAME
9-8522-
1164-0
(J-24244) Side bearing installer

5-8840-2852-0
Outer bearing installer
(for 2W D)
5-8522-0054-0
(J-290 15) Inner bearing installer
(for 4W D)
5-8840-2853-0
Hub oil seal installer
(for 2W D)

5-8840-2
117-0
(J-36827) Hub nut wrench

5-8840-2
119-0
(J-36829) Inner bearing installer (for 4W D)
5-8840-2854-0
Oil seal installer (for 4W D)
5-8840-2789-0
ABS sensor rotor installer
9-8522-
1270-0 Inner bearing installer (for 2W D)


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ISUZU KB P190 2007

4C2-2 SHIFT ON THE FLY SYSTEM
SHIFT ON THE FLY SYSTEM
Outline of Shift on The Fly System
The shift on the fly system switches between 2 wheel
drive (2W D) and 4 wheel drive (4W D) electrically b
y
driver's pressing the 4W D switch (push button type) on
instrument panel.
This system controls below operations.
1. Shifting the transfer front output gear (Connecting to,
and disconnecting from, front propeller shaft b
y
motor actuator).
2. Retrial of shifting the transfer front output gear.
3. Connecting front wheels to, and disconnecting them from, the front axles by axle motor actuator.
4. Indicator on instrument panel.
5. 4W D out signal to other Electronic Hydraulic Control Unit.

System Diagrams
RUW 34BLF000201


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ISUZU KB P190 2007

BRAKE CON TROL SY STE M 5 A


EHCU, Brake Pipe Diagram .......................................................................................... 5A-5
Hydraulic Unit (H/U) ...................................................................................................... 5A-6
Normal Braking ............................................................................................................. 5A- 7
Pressure Isolation (Pressure Maintain)....................................................................... 5A-8
Pressure Reduction ...................................................................................................... 5A-9
Brake Release ............................................................................................................... 5A -10
Circuit Diagram ............................................................................................................. 5A -11
Connector List ............................................................................................................... 5 A-14
Parts Location ............................................................................................................... 5 A-16
EHCU Pin-Assignment .................................................................................................. 5A-20
System Components .................................................................................................... 5A-22
Electronic Hydraulic Control Unit (EHCU).............................................................. 5A-22
ABS Warning Lamp .................................................................................................. 5A-22
Wheel Speed Sensor (WSS) .................................................................................... 5A-22
G Sensor ................................................................................................................... 5A- 22
Normal and Anti-lock Braking ................................................................................. 5A-22
Electronic Brake-force Distribution (EBD) System................................................ 5A-23
Brake Pedal Travel ................................................................................................... 5A-23
Acronyms and Abbreviations....................................................................................... 5A-23
General Diagnosis ............................................................................................................. 5A-23
General Information ...................................................................................................... 5A-23
ABS Service Precautions ............................................................................................. 5A-23
Computer System Service Precautions ...................................................................... 5A-24
General Service Precautions ....................................................................................... 5A-24
Note on Intermittents .................................................................................................... 5A-24
Test Driving ABS Complaint Vehicles ......................................................................... 5A-24
"ABS" Warning Lamp ................................................................................................... 5A-25
Normal Operation .......................................................................................................... 5A-2 5
SECTION 5A
BRAKE CONTROL SYSTEM
TABLE OF CONTENTS
Ser vice Precau tion ............................................................................................................ 5A -3
General Descrip tio n........................................................................................................... 5A -4

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ISUZU KB P190 2007

5A -1 BR AKE CON TROL SY STE M
Brake (E BD) Warning Lamp ......................................................................................... 5 A -25
Tech 2 Scan Tool .......................................................................................................... 5 A -2 6
Da ta List ( T ech 2 ).......................................................................................................... 5 A -32
Diagnostic Trouble Codes ................................................................................................ 5 A -33
Diagnosis By " A BS" Warning Lamp Illumination Patter n.............................................. 5 A -35
Basic Diagnostic Flow Chart ............................................................................................ 5 A -38
Basic Inspec tion Procedure ............................................................................................. 5 A -40
1. Basic Inspec tion of Ser vice Brake .......................................................................... 5 A -40
2. Ground Inspection .................................................................................................... 5 A -40
W heel Speed Sensor Inspec tion Procedure.................................................................... 5 A -41
Symptom Diagnosis .......................................................................................................... 5A- 42
ABS Works Frequently But Vehicle Does Not Decelerate ......................................... 5A-42
Uneven Braking Occurs While ABS Works ................................................................ 5A-43
The Wheels Are Locked................................................................................................ 5A-43
Brake Pedal Feed Is Abnormal .................................................................................... 5A-44
Braking Sound (From EHCU) Is Heard While Not Braking ........................................ 5A-45
No ABS Warning Lamp ................................................................................................. 5A-46
ABS Warning Lamp ON Steady.................................................................................... 5A-47
DTC C0221 (Flash Code 21) Front Right Wheel Speed Sensor
Short Circuit or Circuit Open ......................................................................................... 5A-48
DTC C0222 (Flash Code 22) Front Right Wheel Speed Sensor Signal Malfunction..... 5A-50
DTC C0225 (Flash Code 25) Front Left Wheel Speed Sensor Short Circuit or
Circuit Open ................................................................................................................ .... 5A-52
DTC C0226 (Flash Code 26) Front Left Wheel Speed Sensor Signal Malfunction ....... 5A-54
DTC C0231 (Flash Code 31) Rear Right Wheel Speed Sensor Short Circuit or
Circuit Open ................................................................................................................ .... 5A-56
DTC C0232 (Flash Code 32) Rear Right Wheel Speed Sensor Signal Malfunction ...... 5A-58
DTC C0235 (Flash Code 35) Rear Left Wheel Speed Sensor Short Circuit or
Circuit Open ................................................................................................................ .... 5A-60
DTC C0236 (Flash Code 36) Rear Left Wheel Speed Sensor Signal Malfunction ........ 5A-62
DTC C0238 (Flash Code 38) Front Speed Sensor Correlation ....................................... 5A-64
DTC C0241 (Flash Code 41) Front Right Hold Solenoid Valve Circuit .......................... 5A-66
DTC C0242 (Flash Code 42) Front Right Release Solenoid Valve Circuit..................... 5A-66
DTC C0245 (Flash Code 45) Front Left Hold Solenoid Valve Circuit ............................. 5A-68
DTC C0246 (Flash Code 46) Front Left Release Solenoid Valve Circuit ....................... 5A-68

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ISUZU KB P190 2007