TROUBLE DIAGNOSIS
EC-905
[YD (WITH EURO-OBD)]
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Basic InspectionEBS0117A
Precaution:
Perform Basic Inspection without electrical or mechanical loads applied;
Headlamp switch is OFF.
On vehicles equipped with daytime light systems, set lighting switch to the 1st position to light
only small lamps.
Air conditioner switch is OFF.
Rear defogger switch is OFF.
Steering wheel is in the straight-ahead position, etc.
Priority Detected items (DTC)
1
U1000 CAN communication line
P0016 Crankshaft position - camshaft position correlation
P0101 P0102 P0103 Mass air flow sensor
P0112 P0113 Intake air temperature sensor
P0117 P0118 Engine coolant temperature sensor
P0122 P0123 P0222 P0223 P2135 Accelerator pedal position sensor
P0182 P0183 Fuel pump temperature sensor
P0192 P0193 Fuel rail pressure sensor
P0237 P0238 Turbocharger boost sensor
P0335 P0336 Crankshaft position sensor
P0340 P0341 Camshaft position sensor
P0563 Battery voltage
P0605 P0606 ECM
P0642 P0643 P0652 P0653 Sensor power supply
P1260 - P1267 Fuel injector adjustment resistor
P1610 - P1617 NATS
P2228 P2229 Barometric pressure sensor
2
P0045 Turbocharger boost control solenoid valve
P0089 P0628 P0629 P1272 - P1275 Fuel pump
P0200 - P0204 P1268 - P1271 P2146 - P2149 Fuel injector
P0380 Glow relay
P0404 EGR volume control valve
P0686 ECM relay
P1212 TCS communication line
3
P0088 P0093 Fuel system
P0217 Engine over temperature (OVERHEAT)
P0234 Turbocharger system
P0401 EGR function
P1211 TCS control unit
TROUBLE DIAGNOSIS
EC-1231
[YD (WITHOUT EURO-OBD)]
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Basic InspectionEBS011XF
Precaution:
Perform Basic Inspection without electrical or mechanical loads applied;
Headlamp switch is OFF.
On vehicles equipped with daytime light systems, set lighting switch to the 1st position to light
only small lamps.
Air conditioner switch is OFF.
Rear defogger switch is OFF.
Steering wheel is in the straight-ahead position, etc.
Priority Detected items (DTC)
1
U1000 CAN communication line
P0016 Crankshaft position - camshaft position correlation
P0102 P0103 Mass air flow sensor
P0112 P0113 Intake air temperature sensor
P0117 P0118 Engine coolant temperature sensor
P0122 P0123 P0222 P0223 P2135 Accelerator pedal position sensor
P0182 P0183 Fuel pump temperature sensor
P0192 P0193 Fuel rail pressure sensor
P0237 P0238 Turbocharger boost sensor
P0335 P0336 Crankshaft position sensor
P0340 P0341 Camshaft position sensor
P0563 Battery voltage
P0605 P0606 ECM
P0642 P0643 P0652 P0653 Sensor power supply
P1260 - P1267 Fuel injector adjustment resistor
P1610 - P1617 NATS
P2228 P2229 Barometric pressure sensor
2
P0089 P0628 P0629 P1272 - P1275 Fuel pump
P0200 - P0204 P1268 - P1271 P2146 - P2149 Fuel injector
P0686 ECM relay
P1212 TCS communication line
3
P0088 P0093 Fuel system
P0217 Engine over temperature (OVERHEAT)
P0234 Turbocharger system
P1211 TCS control unit
TF-2 DIAGNOSTIC PROCEDURE .............................. 40
COMPONENT INSPECTION .............................. 42
Engine Control Signal ............................................. 42
DIAGNOSTIC PROCEDURE .............................. 42
CAN Communication Line ...................................... 43
DIAGNOSTIC PROCEDURE .............................. 43
TROUBLE DIAGNOSIS FOR SYMPTOMS .............. 44
4WD Indicator Lamp and LOCK Indicator Lamp Do
Not Turn ON for Approx. 1 Second When The Igni-
tion Switch Is Turned to ON .................................... 44
DIAGNOSTIC PROCEDURE .............................. 44
4WD Warning Lamp Does Not Turn ON When The
Ignition Switch Is Turned to ON .............................. 45
DIAGNOSTIC PROCEDURE .............................. 45
4WD Warning Lamp Does Not Turn OFF Several
Seconds after Engine Started ................................. 46
DIAGNOSTIC PROCEDURE .............................. 46
4WD Mode Cannot Be Switched after Engine Is
Started .................................................................... 47
DIAGNOSTIC PROCEDURE .............................. 47
Heavy Tight-corner Braking Symptom Occurs
When The Vehicle Is Driven in AUTO Mode and The
Steering Wheel Is Turned Fully to Either Side after
The Engine Is Started ............................................. 48
DIAGNOSTIC PROCEDURE .............................. 48
Vehicle Does Not Enter 4WD Mode Even Though
4WD Warning Lamp Turned to OFF ....................... 49
DIAGNOSTIC PROCEDURE .............................. 50
While Driving, 4WD Warning Lamp Flashes Rapidly
(When Flashing in Approx. 1 Minute and Then Turn-
ing OFF) ................................................................. 50
While Driving, 4WD Warning Lamp Flashes Slowly
(When Continuing to Flash until Turning Ignition Switch OFF) ............................................................ 51
DIAGNOSTIC PROCEDURE ............................... 51
4WD CONTROL UNIT ............................................... 52
Removal and Installation ......................................... 52
REMOVAL ............................................................ 52
INSTALLATION .................................................... 52
SIDE OIL SEAL ......................................................... 53
Removal and Installation ......................................... 53
REMOVAL ............................................................ 53
INSTALLATION .................................................... 53
AIR BREATHER HOSE ............................................. 54
Components ............................................................ 54
Removal and Installation ......................................... 54
TRANSFER ASSEMBLY ........................................... 55
Removal and Installation ......................................... 55
COMPONENTS ................................................... 55
REMOVAL ............................................................ 55
INSTALLATION .................................................... 56
Disassembly and Assembly .................................... 57
COMPONENTS ................................................... 57
ASSEMBLY INSPECTION ................................... 58
DISASSEMBLY .................................................... 62
INSPECTION AFTER DISASSEMBLY ................ 66
SELECTING ADJUSTING SHIMS ....................... 67
ASSEMBLY .......................................................... 68
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 74
General Specifications ............................................ 74
Inspection and Adjustment ...................................... 74
PRELOAD TORQUE BEFORE DISASSEMBLY ... 74
PRELOAD TORQUE AFTER DISASSEMBLY
AND REASSEMBLY ............................................ 74
BACKLASH .......................................................... 74
COMPANION FLANGE RUNOUT ....................... 74
SELECTIVE PARTS ............................................ 74
BRC-2
ESP/TCS/ABS
PRECAUTIONS ......................................................... 49
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ................................................................. 49
Precautions for Brake System ................................ 49
Precautions for Brake Control ................................ 49
PREPARATION ......................................................... 50
Special Service Tools ............................................. 50
ON-VEHICLE SERVICE ............................................ 51
Adjustment of Steering Angle Sensor Neutral Posi-
tion .......................................................................... 51
SYSTEM DESCRIPTION .......................................... 52
System Diagram ..................................................... 52
ESP Function .......................................................... 52
TCS Function .......................................................... 52
ABS Function .......................................................... 53
EBD Function ......................................................... 53
Fail-Safe Function .................................................. 53
ESP/ TCS SYSTEM ............................................ 53
ABS, EBD SYSTEM ............................................ 53
Hydraulic Circuit Diagram ....................................... 54
CAN COMMUNICATION ........................................... 55
System Description ................................................. 55
CAN Communication Unit ....................................... 55
TYPE 3/TYPE4 .................................................... 55
TYPE 5 ................................................................ 56
TROUBLE DIAGNOSIS ............................................ 58
How to Proceed With Diagnosis ............................. 58
BASIC CONCEPT ............................................... 58
DIAGNOSIS FLOWCHART ................................. 59
ASKING COMPLAINTS ....................................... 60
EXAMPLE OF DIAGNOSIS SHEET .................... 60
Component Parts and Harness Connector Location ... 61
Schematic ............................................................... 62
Wiring Diagram —ESP/TCS/ABS— ..................... 63
LHD MODEL ........................................................ 63
RHD MODEL ....................................................... 69
Control Unit Input/Output Signal Standard .............. 75
REFERENCE VALUE FROM CONSULT-II ......... 75
CONSULT-II Functions ........................................... 77
CONSULT-II MAIN FUNCTION ........................... 77
CONSULT-II BASIC OPERATION PROCEDURE
... 77
SELF-DIAGNOSIS .............................................. 79
DATA MONITOR .................................................. 81
ACTIVE TEST ..................................................... 84
For Fast and Accurate Diagnosis ........................... 86
PRECAUTIONS FOR DIAGNOSIS ..................... 86
Basic Inspection ..................................................... 87
BASIC INSPECTION 1 BRAKE FLUID AMOUNT,
LEAKS, AND BRAKE PADS INSPECTION ......... 87
BASIC INSPECTION 2 POWER SYSTEM TER-
MINAL LOOSENESS AND BATTERY INSPEC-
TION .................................................................... 87
BASIC INSPECTION 3 ABS WARNING LAMP,
ESP OFF INDICATOR LAMP, SLIP INDICATOR
LAMP AND BRAKE WARNING LAMP INSPEC-TION .................................................................... 88
Inspection 1 Wheel Sensor System ........................ 89
INSPECTION PROCEDURE ............................... 89
Inspection 2 Engine System ................................... 91
Inspection 3 ESP/TCS/ABS Control Unit System ... 91
Inspection 4 Pressure Sensor and the Circuit
between Pressure Sensor and ESP/TCS/ABS Con-
trol Unit. ................................................................... 91
Inspection 5 Steering Angle Sensor and Circuit
between Steering Angle Sensor and ESP/TCS/ABS
Control Unit. ............................................................ 93
Inspection 6 Yaw Rate/Side G sensor and the Circuit
between Yaw Rate/Side G sensor and ESP/TCS/
ABS Control Unit. .................................................... 95
Inspection 7 Solenoid Valve, ESP Switch-over Sole-
noid Valve and Circuit ............................................. 96
Inspection 8 Actuator Motor, Motor Relay and Circuit
... 99
Inspection 9 Actuator Relay and Circuit ................101
Inspection 10 Stop Lamp Switch and Circuit .........103
Inspection 11 ESP/TCS/ABS Control Unit Power
Supply Circuit ........................................................103
Inspection 12 When “EMERGENCY BRAKE” is
indicated in the Self-Diagnosis Results .................105
Inspection 13 When “ST ANG SEN SIGNAL” is Indi-
cated in the Self-Diagnosis Results ......................105
Inspection 14 Brake Fluid Level of Reservoir Tank,
Communication Circuit between ESP/TCS/ABS
Control Unit and Brake Fluid Level Warning Switch .106
Inspection 15 CAN Communication Circuit, ESP/
TCS/ABS Control Unit and Steering Angle Sensor .107
Component Check ................................................107
ESP OFF SWITCH ............................................107
ESP RELAY BOX ...............................................107
ESP ACTUATOR ...............................................108
Symptom 1: ABS Works Frequently. .....................110
Symptom 2: Unexpected Pedal Action .................110
Symptom 3: Longer Stopping Distance ................. 111
Symptom 4: ABS Does Not Work. ........................112
Symptom 5: Pedal Vibration and Noise ................112
Symptom 6: ESP OFF Indicator Lamp Does Not Illu-
minate ...................................................................113
Symptom 7: SLIP Indicator Lamp Does Not Illumi-
nate .......................................................................114
Symptom 8: Vehicle Jerks During ESP/TCS/ABS
Control ..................................................................114
WHEEL SENSORS .................................................116
Removal and Installation .......................................116
SENSOR ROTOR ....................................................117
Removal and Installation .......................................117
REMOVAL ..........................................................117
INSTALLATION ..................................................117
ESP/TCS/ABS CONTROL UNIT .............................118
Removal and Installation .......................................118
REMOVAL ..........................................................118
INSTALLATION ..................................................118
ESP/TCS/ABS ACTUATOR AND RELAY BOX ......119
Removal and Installation .......................................119
ON-VEHICLE SERVICE
BRC-51
[ESP/TCS/ABS]
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ON-VEHICLE SERVICEPFP:00000
Adjustment of Steering Angle Sensor Neutral PositionEFS0019R
In case of doing work that applies to the list below, make sure to adjust neutral position of steering angle sen-
sor before running vehicle.
×: Required
–: Not required
CAUTION:
To adjust neutral position of steering angle sensor, make sure to use CONSULT-II.
(Adjustment cannot be done without CONSULT-II.)
1. Stop vehicle with front wheels in straight-ahead position.
2. Connect CONSULT-II and CONSULT-II CONVERTER to data link connector on vehicle, and turn ignition
switch ON (do not start engine).
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
3. Touch “ABS”, “WORK SUPPORT” and “ST ANGLE SENSOR ADJUSTMENT” on CONSULT-II screen in
this order. Refer to BRC-77, "
CONSULT-II BASIC OPERATION PROCEDURE" .
4. Touch “START”.
CAUTION:
Do not touch steering wheel while adjusting steering angle
sensor.
5. After approximately 10 seconds, touch “END”. (After approxi-
mately 60 seconds, it ends automatically.)
6. Turn ignition switch OFF, then turn it ON again.
CAUTION:
Be sure to carry out above operation.
7. Run vehicle with front wheels in straight-ahead position, then
stop.
8. Select “DATA MONITOR”, “SELECTION FROM MENU”, and “STR ANGLE SIG” on CONSULT-II screen.
Then make sure “STR ANGLE SIG” is within 0 ±3.5 deg. If value is more than specification, repeat steps 3
to 7.
9. Erase memory of ABS actuator and electric unit (control unit) and ECM.
10. Turn ignition switch OFF.
Situation Adjustment of Steering Angle Sensor Neutral Position
Removing/Installing ESP/TCS/ABS control unit−
Replacing ESP/TCS/ABS control unit−
Removing/Installing steering angle sensor×
Removing/Installing steering components×
Removing/Installing suspension components×
Change 4 tires to new ones –
Tire rotation–
Adjusting wheel alignment×
SFIA0371E
BRC-86
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
For Fast and Accurate DiagnosisEFS004H8
PRECAUTIONS FOR DIAGNOSIS
Before performing diagnosis, always read precautions. Refer to BRC-58, "How to Proceed With Diagno-
sis" .
If ESP/TCS/ABS control unit steering angle sensor, steering system parts or suspension system parts
have been replaced, or if alignment has been adjusted, be sure to adjust neutral position of steering angle
sensor before driving. Refer to BRC-51, "
Adjustment of Steering Angle Sensor Neutral Position" .
After diagnosis is finished, be sure to erase memory. Refer to BRC-79, "SELF-DIAGNOSIS" .
When checking continuity and voltage between units, be sure to check for disconnection, looseness,
bend, or collapse of connector terminals. If any malfunction is found, repair or replace connector termi-
nals.
For intermittent symptoms, possible cause is malfunction in harness, harness connector, or terminals.
Move harness, harness connector, and terminals to check for poor connections.
If a circuit tester is used for the check, be careful not to forcibly extend any connector terminal.
To use CONSULT-II to perform self-diagnosis of ESP/TCS/ABS control unit active tests, or work support,
first stop work, then connect CONSULT-II and select “ABS”.
While self-diagnostic results of CONSULT-II shows malfunction, if CONSULT-II active test is performed,
an engine system error may be indicated. In this case, start engine to resume the normal screen.
ESP/TCS/ABS system electronically controls brake operation and engine output. The following symptoms
may be caused by normal operations:
Symptom Symptom description Result
Motor operation noiseThis is noise of motor inside ESP/TCS/ABS control unit. Slight noise
may occur during ESP, TCS, and ABS operation.
Normal
When the vehicle speed goes over 20 km/h (12.5 MPH), motor and
valves operating noise may be heard. It happens only once after IGN
(ignition) is ON. This is a normal status of the system operation check.
System operation check
noiseWhen engine starts, slight “click” noise may be heard from engine room.
This is normal and is part of system operation check.Normal
ESP/TCS operation
(SLIP indicator lamp blink-
ing)TCS may activate momentarily if wheel speed changes when driving
over location where friction coefficient varies, when up/downshifting, or
when fully depressing accelerator pedal.
Normal
Cancel the ESP/TCS
function for the
inspection on a chas-
sis dynamometer. For inspection of speedometer or other instruments, press ESP OFF
SW to turn ESP/TCS function off.
When accelerator pedal is depressed on a chassis dynamometer (fixed
front-wheel type), vehicle speed will not increase. This is not normal. It is
result of TCS being activated by stationary front wheels. Warning lamp
may also illuminate to indicate “sensor system error”. This is also nor-
mal, and is the result of the stationary front wheels being detected. To be
certain, restart engine, and drive vehicle at 30 km/h (19 MPH) or more.
Make sure warning lamp does not illuminate.
ABS operation (Longer stop-
ping distance)On roads with low friction coefficients, such as snowy roads or gravel
roads, vehicles with ABS may require a longer stopping distance. There-
fore, when driving on such roads, avoid overconfidence and keep speed
sufficiently low.Normal
Insufficient feeling of accel-
erationDepending on road conditions, driver may feel that feeling of accelera-
tion is insufficient. This is because traction control, which controls
engine and brakes to achieve optimal traction, has the highest priority
(for safety). As a result, there may be times when acceleration is slightly
less than usual for the same accelerator pedal operation.Normal
BRC-94
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
3. STEERING ANGLE SENSOR CIRCUIT CHECK
1. Disconnect ESP/TCS/ABS control unit connector and steering angle sensor connector.
2. Check for continuity between ESP/TCS/ABS control unit and
steering angle sensor (harness connector M81).
3. Check for the continuity between the steering angle sensor and
ground.
Is inspection result OK?
YES >> GO TO 4.
NO >> Repair or replace the disconnected harness.
4. DATA MONITOR CHECK
Perform the “STR ANGLE SIG” value in “DATA MONITOR” and check that it is in normal condition.
Is inspection result OK?
YES >> Perform the ESP/TCS/ABS control unit self-diagnosis again.
NO >> Replace the spiral cable (with the steering angle sensor) and adjust the neutral position of steer-
ing angle sensor. BRC-51, "
Adjustment of Steering Angle Sensor Neutral Position" .
SFIA2032E
ESP/TCS/ABS control unit
(harness connector E122)Steering angle sensor
(harness connector M81)Continuity
2 (Y/R) 3 (Y/R) Yes
SFIA2033E
Steering angle sensor
(harness connector M81)ground Continuity
2 (B/R) — Yes
Steering condition STR ANGLE SIG (Data monitor)
Straight-ahead – 5 ° to + 5 °
Turn the wheel to the right by 90°Approx. + 90 °
Turn the wheel to the left by 90°Approx. – 90 °
PS-8
STEERING WHEEL
Start engine. With engine at idle, turn steering wheel from stop
to stop and measure steering angles.
If angles are outside specification, measure rack stroke.
If rack stroke is outside of specification, disassemble steering
gear to check rack stroke.
Steering angles are not adjustable. If any of steering angles is different from specified value, check steer-
ing gear, the column and the front suspension components for wear or damage. If any abnormality exists,
replace the malfunctioning parts.
Removal and InstallationEGS0004F
REMOVAL
1. Remove air bag module. Refer to SRS-30, "DRIVER AIR BAG MODULE" .
2. Remove horn connector.
3. Remove steering wheel mounting nut and paint mating marks on steering wheel body and top of column
shaft.
4. Using a steering wheel puller (SST), remove steering wheel.
INSTALLATION
Paying attention to following items, install in the reverse order of removal.
NOTE:
When reconnecting spiral cable, fix cable with a tape so that fixing case and rotating part keep aligned.
This will omit neutral position alignment procedure during spiral cable installation.
Neutral position (refer to figure)... Gently turn spiral cable clock-
wise until it comes to the stop. Then turn it counter clockwise
(approximately 3.0 turns) until centering mark is aligned with
adjustment mark. (Service part is fixed in neutral position with
stopper. It can be installed onto steering wheel without align-
ment once stopper is removed.)
CAUTION:
Place steering wheel as follows: Front wheels in straight-
ahead position. R mark on the cancel claw faces down. 3
bosses align with 3 holes behind steering wheel assembly.
Check that spiral cable is placed in neutral position and that
locating pin on the left of the spiral cable is aligned with the
locating pinhole behind the steering wheel assembly.
Do not rotate spiral cable more than necessary. Do not tighten them excessively. (The cable may
be torn off.)
After installation, check system for proper operation by observing air bag warning lamp.
If air bag indicator indicates any abnormal condition, use self-diagnosis function or CONSULT to
reset or cancel memory.Inner wheel Minimum : 36°
Nominal : 39°
Maximum : 40°
Outer wheel : 31°
Rack stroke : 66.5 mm (2.618 in)
SGIA0055E
SGIA0080E
SGIA0096E