STEERING COLUMN – STEERING SYSTEM |
SR–1 |
|
STEERING SYSTEM
PRECAUTION
1.HANDLING PRECAUTIONS FOR STEERING SYSTEM
(a)Care must be taken when replacing parts. Incorrect replacement may affect the performance of the steering system and result in driving hazards.
2.HANDLING PRECAUTIONS FOR SRS AIRBAG SYSTEM
(a)The vehicle is equipped with SRS (Supplemental Restraint System) such as airbags. Failure to carry out service operations in the correct sequence could cause the SRS to unexpectedly deploy during servicing. This may cause a serious accident. Before servicing (including inspection, replacement, removal and installation of parts), be sure to read the precautionary notices for the Supplemental Restraint System (See page RS-1).
SR
SR–2 |
STEERING COLUMN – STEERING SYSTEM |
|
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of the problem. The numbers indicate likely causes of the problem in descending order. Check each part in order. If necessary, repair or replace the faulty parts.
STEERING SYSTEM
|
|
|
Symptom |
|
Suspected area |
See page |
|
|
|
|
|
|
|
|
|
|
|
1. |
Tires (Improperly inflated) |
TW-3 |
|
|
|
|
|
|
|
|
|
|
|
2. |
Front wheel alignment (Incorrect) |
SP-4 |
|
|
|
|
|
|
|
|
|
Hard steering |
|
3. |
Steering system joints (Worn) |
- |
|
|
|
|
|
|
|
|
|
|
4. |
Suspension arm ball joints (Worn) |
SP-28 |
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
5. |
Steering column (Binding) |
SR-38 |
|
|
|
|
|
|
|
|
|
|
|
6. |
Power steering gear |
PS-40 |
|
|
|
|
|
|
|
|
|
|
|
1. |
Tires (Improperly inflated) |
TW-3 |
|
|
|
|
|
|
|
|
|
Poor return |
|
2. |
Front wheel alignment (Incorrect) |
SP-4 |
|
|
|
|
|
|
|
|
|
|
3. |
Steering column (Binding) |
SR-38 |
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
4. |
Power steering gear |
PS-40 |
|
|
|
|
|
|
|
|
|
|
|
1. |
Steering system joints (Worn) |
- |
|
|
|
|
|
|
|
|
|
|
|
2. |
Suspension arm ball joints (Worn) |
SP-28 |
|
|
|
|
|
|
|
|
|
Excessive free play |
|
3. Intermediate shaft, universal joint, sliding yoke (Worn) |
- |
|
|
|
|
|
|
|
|
|
|
|
|
4. |
Front wheel bearing (Worn) |
AH-5 |
SR |
|
|
||||
|
|
|
|
|
||
|
|
|
5. Power steering gear |
PS-40 |
||
|
|
|
|
|
|
|
|
|
Abnormal noise |
|
1. |
Steering system joints (Worn) |
- |
|
|
|
|
|
|
|
|
|
|
2. |
Power steering gear |
PS-40 |
|
|
|
|
|
|||
|
|
|
|
|
|
|
STEERING COLUMN – STEERING SYSTEM |
SR–3 |
|
|
ON-VEHICLE INSPECTION |
|
1. INSPECT STEERING WHEEL FREE PLAY |
|
(a) Stop the vehicle and align the tires facing straight |
|
ahead. |
Maximum Free Play |
(b) Gently turn the steering wheel right and left by hand, |
and check the steering wheel free play. |
|
|
Maximum free play: |
|
30 mm (1.18 in.) |
|
HINT: |
|
If the free play exceeds the maximum, check the |
|
steering column, steering intermediate shaft, |
30 mm (1.18 in.) |
steering sliding yoke, or steering gear. |
C132537E01 |
|
SR
SR–4 |
STEERING COLUMN – STEERING SYSTEM |
|
|
|
ADJUSTMENT |
Steering Wheel |
Masking Tape |
Upper Steering |
Column Cover |
C132538E01 |
1.STEERING OFF CENTER ADJUSTMENT PROCEDURE
HINT:
This is the adjustment procedure for steering off center.
(a)Inspect steering wheel off center.
(1)Apply masking tape on the top center of the steering wheel and steering column upper cover.
(2)Drive the vehicle in a straight line for 100 meters at a constant speed of 35 mph (56 km/ h), and hold the steering wheel to maintain the course.
SR Upper Steering |
(3) |
Draw a line on the masking tape as shown in |
(4) |
the illustration. |
|
Column Cover |
Turn the steering wheel to the center position. |
|
|
|
HINT: |
Marked Line |
|
Look at the upper surface of the steering |
|
|
wheel, steering spoke, and SRS airbag line to |
Steering Wheel |
|
find the center position. |
|
|
|
|
C132539E01 |
|
STEERING COLUMN – STEERING SYSTEM |
SR–5 |
|
Upper Steering |
(5) |
Draw a new line on the masking tape on the |
|
|
steering wheel as shown in the illustration. |
|
|
Column Cover |
(6) |
Measure the distance between the 2 lines on |
|
|
|
||
Marked Line |
|
the masking tape on the steering wheel. |
|
(7) |
Convert the measured distance to steering |
|
|
|
|
||
|
|
angle. |
|
Steering Wheel |
|
HINT: |
|
|
• Measured distance 1 mm (0.04 in.) = |
|
|
|
|
Steering angle of approximately 1 degree. |
|
|
|
• Make a note of the steering angle. |
|
C132540E01 |
|
|
|
(b) |
Adjust steering angle. |
|
|
|
(1) |
Draw a line on the RH and LH tie rod ends and |
|
|
|
rack ends respectively where it can be easily |
|
|
|
seen. |
|
|
(2) |
Using a paper gauge, measure the distance |
|
|
|
from the RH and LH tie rod ends to the rack |
|
Marked Line |
|
end screws. |
SR |
|
HINT: |
||
|
|
||
|
|
• Measure both the RH and LH sides. |
|
C132045E02 |
|
• Make a note of the measured values. |
|
|
(3) |
Remove the RH and LH boot clips from the |
|
|
|
rack boots. |
|
|
(4) |
Loosen the RH and LH lock nuts. |
|
|
(5) |
Turn the RH and LH rack ends by the same |
|
|
|
amount (but in different directions) according to |
|
|
|
the steering angle. |
|
|
|
HINT: |
|
|
|
One 360 degree turn of the rack end (1.5 mm |
|
|
|
(0.059 in.) horizontal movement) equals to 12 |
|
C132541 |
|
degrees of steering angle. |
|
|
(6) |
Tighten the RH and LH lock nuts to the |
|
|
|
specified torque. |
|
|
|
Torque: 74 N*m (755 kgf*cm, 55 ft.*lbf) |
|
|
|
NOTICE: |
|
|
|
Make sure that the difference in length |
|
|
|
between the RH and LH tie rod ends and |
|
|
|
rack end screws is within 1.5 mm (0.059 in.). |
|
|
(7) |
Install the RH and LH boot clips. |
|
SR–4
SR
STEERING COLUMN – ELECTRIC STEERING LOCK
ELECTRIC STEERING LOCK
PRECAUTION
1.PRECAUTIONS WHEN WORKING ON ELECTRIC STEERING LOCK
(a)After replacing the steering lock actuator assembly (steering lock ECU), perform the key ID code registration.
(b)If the steering lock actuator assembly is replaced, open and close the driver's door. The engine may not start until the driver's door is opened or closed. HINT:
Opening and closing the driver's door causes the steering lock actuator assembly (steering lock ECU) to memorize the correct steering lock bar position.
(c)If checking for DTCs of the smart access system with push-button start function or if checking the DATA LIST with the engine switch off, make sure that the driver's door is open.
HINT:
When the engine switch is off, the main body ECU may be in a sleep mode. If the main body ECU is in this sleep mode, it will not be possible for the intelligent tester to communicate with it. Opening and closing the driver's door will cause the ECU to exit the sleep mode.
STEERING COLUMN – ELECTRIC STEERING LOCK |
SR–5 |
|
PARTS LOCATION
STEERING COLUMN ASSEMBLY
-STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU)
ENGINE ROOM J/B AND R/B
- STR LOCK FUSE |
CERTIFICATION ECU |
|
|
- D.C.C. FUSE |
ID CODE BOX |
|
|
- IG2 FUSE |
|
- AM2 FUSE |
|
- IG2 RELAY |
|
SR
INSTRUMENT PANEL J/B
-MAIN BODY ECU
-IGN FUSE
C113501E01
SR–6 |
STEERING COLUMN – ELECTRIC STEERING LOCK |
|
SYSTEM DIAGRAM
Enigine Switch |
|
|
- Transponder Key |
Certification ECU |
|
Amplifier (with Key Coil) |
|
|
|
|
|
Main Body ECU |
ID Code Box |
Steering Lock ECU |
SR |
|
|
|
ECM |
|
LIN Communication Line |
|
|
|
|
B126245E02 |
Input and output signals of each ECU:
Transmitting ECU (transmitter) |
|
Receiving ECU |
Signals |
Communication Method |
|
|
|
|
|
|
|
Main Body ECU |
Steering Lock ECU |
Power supply status (to steering |
LIN |
||
lock motor) |
|||||
|
|
|
|
||
|
|
|
|
|
|
|
• |
Certification ECU |
|
|
|
Steering Lock ECU |
• |
Main Body ECU |
Sleep available status |
LIN |
|
|
• |
ID Code Box |
|
|
|
|
|
|
|
|
|
|
• |
Certification ECU |
|
|
|
Steering Lock ECU |
• |
Main Body ECU |
Lock / Unlock sensor status |
LIN |
|
|
• |
ID Code Box |
|
|
|
|
|
|
|
|
|
|
• |
Certification ECU |
|
|
|
Steering Lock ECU |
• |
Main Body ECU |
Steering lock status |
LIN |
|
|
• |
ID Code Box |
|
|
|
|
|
|
|
|
|
|
• |
Certification ECU |
|
|
|
Steering Lock ECU |
• |
Main Body ECU |
Motor control status |
LIN |
|
|
• |
ID Code Box |
|
|
|
|
|
|
|
|
|
|
• |
Certification ECU |
|
|
|
Steering Lock ECU |
• |
Main Body ECU |
Diagnostic response status |
LIN |
|
|
• |
ID Code Box |
|
|
|
|
|
|
|
|
|
|
• |
Certification ECU |
|
|
|
Steering Lock ECU |
• |
Main Body ECU |
Lock / Unlock sensor malfunction |
LIN |
|
|
• |
ID Code Box |
|
|
|
|
|
|
|
|
|
|
STEERING COLUMN – ELECTRIC STEERING LOCK |
SR–7 |
|||
|
|
||||
|
|
|
|
|
|
Transmitting ECU (transmitter) |
|
Receiving ECU |
Signals |
Communication Method |
|
|
|
|
|
|
|
|
• |
Certification ECU |
Power supply malfunction |
LIN |
|
Steering Lock ECU |
• |
Main Body ECU |
|||
(to steering lock motor) |
|||||
|
• |
ID Code Box |
|
||
|
|
|
|||
|
|
|
|
|
|
|
• |
Certification ECU |
|
|
|
Steering Lock ECU |
• |
Main Body ECU |
Motor driver malfunction |
LIN |
|
|
• |
ID Code Box |
|
|
|
|
|
|
|
|
|
|
• |
Certification ECU |
|
|
|
Steering Lock ECU |
• |
Main Body ECU |
Lock bar (stuck) status |
LIN |
|
|
• |
ID Code Box |
|
|
|
|
|
|
|
|
|
|
• |
Certification ECU |
|
|
|
Steering Lock ECU |
• |
Main Body ECU |
Push start status |
LIN |
|
|
• |
ID Code Box |
|
|
|
|
|
|
|
|
|
|
• |
Certification ECU |
|
|
|
Steering Lock ECU |
• |
Main Body ECU |
Lock / Unlock relay drive status |
LIN |
|
|
• |
ID Code Box |
|
|
|
|
|
|
|
|
|
|
• |
Certification ECU |
|
|
|
Steering Lock ECU |
• |
Main Body ECU |
Engine start control status |
LIN |
|
|
• |
ID Code Box |
|
|
|
|
|
|
|
|
|
SR
SR–8 |
STEERING COLUMN – ELECTRIC STEERING LOCK |
|
SYSTEM DESCRIPTION
1. DESCRIPTION
(a) The steering lock system locks or unlocks the steering lock by activating the steering lock bar with a motor. The steering lock ECU activates the motor based on signals from the certification ECU and main body ECU.
(b) A LIN (Local Interconnect Network) is used for communication between different ECUs in this system.
2. |
FUNCTIONS OF COMPONENTS |
||||
|
|
|
(a) The steering lock ECU controls the system based |
||
|
|
|
|
on information from the following components. |
|
|
|
|
|
|
|
|
|
Item |
|
Function |
|
|
|
|
|
|
|
|
|
Steering lock actuator assembly |
|
Consists of a motor, lock bar, lock and unlock position sensors, etc. |
|
|
|
|
|
Activated by the steering lock ECU. |
|
|
|
|
|
|
|
|
|
Steering lock ECU |
|
Included in the steering lock actuator assembly. This ECU activates |
|
|
|
|
|
the steering lock motor based on permission signals from the main |
|
|
|
|
|
body ECU and certification ECU. |
|
|
|
|
|
Detects steering lock or unlock state and transmits this status to other |
|
|
|
|
|
ECUs. |
|
|
|
|
|
|
|
|
|
Main body ECU |
|
Permits the steering lock ECU to supply power to activate the motor. |
|
|
|
|
|
The main body ECU and certification ECU permit engine start after |
|
|
|
|
|
receiving an unlock signal from the steering lock ECU. |
|
SR |
|
|
|||
|
|
|
|
||
|
Certification ECU |
|
Orders the steering lock ECU to lock / unlock the steering. The main |
||
|
|||||
|
|
|
|
body ECU and certification ECU permit engine start after receiving an |
|
|
|
|
|
unlock signal from the steering lock ECU. |
|
|
|
|
|
|
|
|
|
IG2 relay |
|
Controlled by the main body ECU. This ECU sends IG signals to the |
|
|
|
|
|
steering lock ECU. |
|
|
|
|
|
|
|
STEERING COLUMN – ELECTRIC STEERING LOCK |
SR–9 |
|
HOW TO PROCEED WITH
TROUBLESHOOTING
The intelligent tester can be used at steps 2, 6, 9 and 12.
1VEHICLE BROUGHT TO WORKSHOP
NEXT
2CHECK AND CLEAR DTCS
NEXT
3 PROBLEM SYMPTOM CONFIRMATION
SYMPTOM DOES NOT OCCUR (Go to step 4)
SYMPTOM OCCURS (Go to step 5)
4SYMPTOM SIMULATION
NEXT
5CHECK CAN COMMUNICATION SYSTEM
SR
HINT:
Check that there are no problems in the CAN communication system before troubleshooting the steering lock system.
NEXT
6 DTC CHECK
DTC IS NOT OUTPUT (Go to step 7)
DTC IS OUTPUT (Go to step 8)
7 PROBLEM SYMPTOMS TABLE
Go to step 9
SR–10 |
STEERING COLUMN – ELECTRIC STEERING LOCK |
|
8DTC CHART
NEXT
9CIRCUIT INSPECTION
NEXT
10PROBLEM IDENTIFICATION
NEXT
11REPAIR OR REPLACEMENT
NEXT
|
|
12 |
|
|
SR |
CONFIRMATION TEST |
|||
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
NEXT |
|
|
|
|
|
|
|
|
|
END |
|
|
|
|
|
|
|
STEERING COLUMN – ELECTRIC STEERING LOCK |
SR–11 |
|
INITIALIZATION |
||
HINT: |
|
|
In vehicles equipped with the smart access system with push- |
||
button start function, the starting function may not operate |
||
after recharging or while jump-starting a discharged battery. |
||
This condition is most common if the battery voltage drops |
||
below 9 V. The following procedure has been developed to |
||
address this condition. |
||
1. |
INITIALIZATION PROCEDURE |
|
Engine Room J/B |
(a) |
Confirm that the D.C.C. fuse is installed. |
|
|
HINT: |
|
|
If the D.C.C. fuse is not installed, install it at this |
|
|
time. |
|
(b) |
Move the shift lever to the P position. |
|
(c) |
Turn the engine switch off. |
|
(d) |
Open the driver's door. |
|
|
HINT: |
|
|
Opening the driver's door will start an initialization |
|
|
process between the steering lock ECU and the |
|
|
engine room J/B. |
|
(e) |
Depress the brake pedal. |
|
(f) |
Press the "START STOP" switch. |
|
|
SR |
D.C.C Fuse |
|
|
C113506E01 |
|
|
SR–12 |
STEERING COLUMN – ELECTRIC STEERING LOCK |
|
PROBLEM SYMPTOMS TABLE
Inspect the suspected areas in numerical order by referring to the corresponding pages when any of the following symptoms occurs:
ELECTRIC STEERING LOCK FUNCTION:
|
|
Symptom |
|
Suspected area |
See page |
|
|
|
|
|
|
|
|
|
1. |
Initialization |
SR-9 |
|
|
|
|
|
|
|
|
|
2. |
Check for DTCs in the smart access system with push- |
ST-26 |
|
|
|
button start. |
|
|
|
|
|
|
|
|
|
|
|
3. |
Check for DTCs in the engine immobiliser system. |
EI-24 |
|
|
|
|
|
|
|
|
|
4. |
Check that the LCK/UNLCK REC item in the DATA LIST of |
SR-14 |
|
|
Steering wheel cannot be unlocked (the engine cannot |
the certification ECU displays YES within 10 seconds after |
|
|
|
|
be started). |
starting the engine. (If it displays NO, see "No steering unlock" |
|
|
|
|
|
command in this table.) |
|
|
|
|
|
|
|
|
|
|
|
5. Check the input signal from the IGE terminal of the steering |
SR-24 |
|
|
|
|
lock ECU. |
|
|
|
|
|
|
|
|
|
|
|
6. |
Steering lock ECU power source circuit. |
SR-30 |
|
|
|
|
|
|
|
|
|
7. |
Replace the steering lock ECU. |
SR-42 |
|
|
|
|
|
|
|
|
|
1. Check that the S CODE MACH item in the DATA LIST of the |
- |
|
|
|
|
certification ECU displays OK. (If it displays NG, replace the ID |
|
|
|
|
Steering wheel cannot be unlocked (no steering unlock |
code box.) |
|
|
|
|
|
|
|
|
|
|
2. Check that the L CODE MACH item in the DATA LIST of the |
- |
||
|
|
command). |
|||
|
|
certification ECU displays OK. (If it displays NG, replace the ID |
|
||
|
|
|
|
||
|
|
|
code box.) |
|
|
SR |
|
|
|
|
|
|
|
3. |
Replace the certification ECU. |
- |
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
1. |
Check for DTCs in the smart access system with push- |
ST-26 |
|
|
|
button start. |
|
|
|
|
|
|
|
|
|
|
|
2. |
Check for DTCs in the engine immobiliser system. |
EI-24 |
|
|
|
|
|
|
|
|
|
3. |
With the engine switch off and the shift in the P position, |
SR-14 |
|
|
|
open and close the driver's door. After that, check that the |
|
|
|
|
Steering wheel cannot be locked. |
LCK/UNLCK REC item in the DATA LIST of the certification |
|
|
|
|
ECU displays YES within 10 seconds. (If it displays NO, see |
|
||
|
|
|
|
||
|
|
|
"No steering lock" command in this table.) |
|
|
|
|
|
|
|
|
|
|
|
4. Check the input signal from the IGE terminal of the steering |
SR-24 |
|
|
|
|
lock ECU. |
|
|
|
|
|
|
|
|
|
|
|
5. |
Steering lock ECU power source circuit. |
SR-30 |
|
|
|
|
|
|
|
|
|
6. |
Replace the steering lock ECU. |
SR-42 |
|
|
|
|
|
|
|
|
|
1. |
Courtesy light switch circuit |
LI-52 |
|
|
|
|
|
|
|
|
|
2. Check that the S CODE MACH item in the DATA LIST of the |
- |
|
|
|
|
certification ECU displays OK. (If it displays NG, replace the ID |
|
|
|
|
Steering wheel cannot be locked (no steering lock |
code box.) |
|
|
|
|
command). |
3. Check that the L CODE MACH item in the DATA LIST of the |
- |
|
|
|
|
certification ECU displays OK. (If it displays NG, replace the ID |
|
|
|
|
|
code box.) |
|
|
|
|
|
|
|
|
|
|
|
4. |
Replace the certification ECU. |
- |
|
|
|
|
|
|
|
STEERING COLUMN – ELECTRIC STEERING LOCK |
SR–13 |
|||||
|
|
|
|
|
|||
SMART ACCESS SYSTEM WITH PUSH-BUTTON START FUNCTION: |
|
|
|
|
|||
|
Symptom |
|
Suspected area |
See page |
|
|
|
|
|
|
|
|
|
|
|
|
|
1. |
Initialization |
SR-9 |
|
|
|
|
|
|
|
|
|
||
|
|
2. |
Check for DTCs in the smart access system with push- |
ST-26 |
|
|
|
|
|
button start. |
|
|
|
|
|
|
|
|
|
|
|
||
|
|
3. |
Check for DTCs in the engine immobiliser system. |
EI-24 |
|
|
|
|
|
|
|
|
|
|
|
|
|
4. |
Check that the engine switch is turned on (IG). |
- |
|
|
|
|
|
|
|
|
|
|
|
|
|
5. Check cranking operation. (If cranking operation is possible, |
- |
|
|
|
|
|
|
see "Engine does not start due to the engine immobiliser" in |
|
|
|
|
|
|
|
this table.) |
|
|
|
|
|
|
|
|
|
|
|
|
|
Engine does not start. |
|
6. |
Check SHIFT P SIG in the DATA LIST of the power source |
- |
|
|
|
|
control ECU and confirm that the shift signal is normal. |
|
|
|
|
||
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
7. |
Check whether the steering wheel is locked or unlocked. (If |
- |
|
|
|
|
|
it is locked, see "Steering wheel cannot be unlocked" in the |
|
|
|
|
|
|
|
steering lock function table.) |
|
|
|
|
|
|
|
|
|
|
|
||
|
|
8. |
Check the output from the SLP terminal of the steering lock |
SR-28 |
|
|
|
|
|
ECU. |
|
|
|
|
|
|
|
|
|
|
|
||
|
|
9. |
Check the output signal from the ST SW of the certification |
ST-48 |
|
|
|
|
|
ECU (DTC B2275). |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
10. Replace the main body ECU. |
- |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1. Check that the L CODE MACH item in the DATA LIST of the |
- |
|
|
|
|
|
|
certification ECU displays OK. (If it displays NG, replace the ID |
|
|
|
|
|
|
|
code box.) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2. |
Check that the ENG START REQ item in the DATA LIST of |
- |
|
|
|
|
|
the certification ECU displays YES. (If it displays NO, replace |
|
|
|
|
|
Engine does not start due to the engine immobiliser. |
|
|
|
SR |
|||
the certification ECU.) |
|
|
|
||||
|
|
|
|
||||
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
3. Check that the S CODE MACH item in the DATA LIST of the |
- |
|
|
|
|
|
|
|
|||||
|
|
certification ECU displays OK. (If it displays NG, replace the ID |
|
|
|
|
|
|
|
code box.) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
4. |
Replace the ID code box. |
- |
|
|
|
|
|
|
|
|
|
|
|
SR–14 |
STEERING COLUMN – ELECTRIC STEERING LOCK |
|
|
|
TERMINALS OF ECU |
E51
C106482E05
1.STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU)
|
|
Terminal No. (Symbols) |
Wiring Color |
Terminal Description |
|
Condition |
|
Specified Condition |
|
|
|
|
|
|
|
|
|
|
|
E51-1 (GND) - Body |
W-B - Body ground |
Ground |
Always |
Below 1 V |
||
|
|
ground |
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
E51-2 (SGND) - Body |
W-B - Body ground |
Signal ground |
Always |
Below 1 V |
||
|
|
ground |
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
E51-3 (IGE) - E51-1 |
|
Power source for driving |
• Motor is in operation |
• |
Below 1 V |
|
|
|
BR - W-B |
• Motor is not in |
|||||
|
|
(GND) |
motor |
• 10 to 12 V |
||||
|
|
|
|
operation |
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
E51-4 (SLP1) - E51-2 |
|
Unlock position sensor |
• |
Steering is locked |
• 10 to 14 V |
|
SR |
|
P - W-B |
• |
Steering lock is |
||||
|
(SGND) |
output signal |
• |
Below 1 V |
||||
|
|
|
released |
|||||
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
E51-5 (LIN) - E51-2 |
O - W-B |
LIN communication bus |
Engine switch on (IG) |
Pulse generation |
||
|
|
(SGND) |
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
E51-6 (IG2) - E51-1 |
B - W-B |
IG signal input |
Engine switch on (IG) |
10 to 14 V |
||
|
|
(GND) |
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
E51-7 (B) - E51-1 (GND) |
P - W-B |
Power source |
Always |
10 to 14 V |
||
|
|
|
|
|
|
|
|
|
STEERING COLUMN – ELECTRIC STEERING LOCK |
SR–15 |
|
DIAGNOSIS SYSTEM
CG |
SG CANH |
SIL |
|
CANL |
BAT |
|
|
H100769E16 |
1.DESCRIPTION
(a)DIAGNOSTIC SYSTEM
When troubleshooting a vehicle with a diagnostic system, the only difference from the usual troubleshooting procedure is connecting the intelligent tester to the vehicle and reading various data output from the vehicle's steering lock ECU. The steering lock ECU records DTCs when the computer detects a malfunction in the computer itself or in system circuits.
To check the DTCs, connect the intelligent tester to the DLC3 on the vehicle. The intelligent tester enables the DTCs to be cleared, the indicators to be activated, and the DATA LIST to be checked.
(b)The steering lock ECU diagnosis information cannot be read directly from the steering lock ECU by the tester. The diagnosis information from the steering lock ECU is transmitted to the tester via the certification ECU to the tester using the controller area network (CAN).
2.CHECK DLC3
(a) The certification ECU uses ISO 15765-4 for |
SR |
|
communication. The terminal arrangement of the |
||
|
||
DLC3 complies with SAE J1962 and matches the |
|
|
ISO 15765-4 format. |
|
Symbols (Terminal No.) |
Terminal Description |
Condition |
Specified Condition |
|
|
|
|
SIL (7) - SG (5) |
Bus "+" line |
During transmission |
Pulse generation |
|
|
|
|
CG (4) - Body ground |
Chassis ground |
Always |
Below 1 Ω |
|
|
|
|
SG (5) - Body ground |
Signal ground |
Always |
Below 1 Ω |
|
|
|
|
BAT (16) - Body ground |
Battery positive |
Always |
11 to 14 V |
|
|
|
|
CANH (6) - CANL (14) |
CAN bus line |
Engine Switch off* |
54 to 69 Ω |
|
|
|
|
CANH (6) - CG (4) |
HIGH-level CAN bus line |
Engine Switch off* |
200 Ω or higher |
|
|
|
|
CANL (14) - CG (4) |
LOW-level CAN bus line |
Engine Switch off* |
200 Ω or higher |
|
|
|
|
CANH (6) - BAT (16) |
HIGH-level CAN bus line |
Engine Switch off* |
6 kΩ or higher |
|
|
|
|
CANL (14) - BAT (16) |
LOW-level CAN bus line |
Engine Switch off* |
6 kΩ or higher |
|
|
|
|
NOTICE:
*: Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the engine switch, and other switches or the doors.
If the result is not as specified, the DLC3 may have a malfunction. Repair or replace the harness and connector.
SR–16 |
STEERING COLUMN – ELECTRIC STEERING LOCK |
|
|
Intelligent Tester |
(b) Connect the cable of the intelligent tester to the |
DLC3, turn the engine switch on (IG) and attempt to |
|
|
use the tester. If the display indicates that a |
|
communication error has occurred, there is a |
|
problem either with the vehicle or with the tester. |
|
• If communication is normal when the tester is |
|
connected to another vehicle, inspect the DLC3 |
|
of the original vehicle. |
|
• If communication is still not possible when the |
|
tester is connected to another vehicle, the |
|
problem may be in the tester itself. Consult the |
|
Service Department listed in the tester's |
DLC3 |
instruction manual. |
|
|
CAN VIM |
|
|
C131977E05 |
3.WARNING FUNCTION OF ENGINE SWITCH
Indicator Light |
|
INDICATOR |
|
(a) The steering lock ECU blinks the LED indicator of the engine switch when any of the following problems occurs in the system:
SR
B083100E01
Detection Item |
Indicator Light Blink Pattern |
Indication Status |
Countermeasure |
|
|
|
|
|
|
|
• Blinks green at 1-second |
The motor operates to release the |
Push the engine switch while |
|
|
steering lock, but the steering |
|||
|
intervals |
|||
Steering lock is still not released |
lock cannot be released (e.g. the |
turning the steering wheel left or |
||
• Goes off 15 seconds after |
||||
|
lock bar is stuck in the steering |
right. |
||
|
blinking starts |
|||
|
column). |
|
||
|
|
|
||
|
|
|
|
|
|
• Blinks amber at 2-second |
• There is a short in the |
Troubleshoot by following "HOW |
|
|
intervals |
devices activating the motor. |
||
Malfunction in smart access |
TO PROCEED WITH |
|||
• Goes off 15 seconds after the |
• There is a problem in the |
|||
system with push-button start |
TROUBLESHOOTING" (See |
|||
engine switch is turned off |
steering lock ECU or power |
|||
|
page SR-7). |
|||
|
while blinking |
source control ECU. |
||
|
|
|||
|
|
|
|
4.WARNING FUNCTION OF COMBINATION METER
(a)The steering lock ECU displays a warning on the combination meter when any of the following problems occurs in the system.
Detection Item |
Display |
Indication Status |
Countermeasure |
|
|
|
|
|
|
|
|
The motor operates to release the |
Push the engine switch while |
|
|
"S/T is not Unlocked" |
steering lock, but the steering |
||
Steering lock is still not released |
• Goes off 15 seconds after |
lock cannot be released (e.g. the |
turning the steering wheel left or |
|
|
blinking starts |
lock bar is stuck in the steering |
right. |
|
|
|
column). |
|
|
|
|
|
|
|
|
"Check S/T Lock" |
• There is a short in the |
Troubleshoot by following "HOW |
|
|
devices activating the motor. |
|||
|
• Goes off 15 seconds after the |
TO PROCEED WITH |
||
Malfunction in push start system |
• There is a problem in the |
|||
engine switch is turned off |
TROUBLESHOOTING" (See |
|||
|
steering lock ECU or power |
|||
|
while blinking |
page SR-7). |
||
|
source control ECU. |
|||
|
|
|
||
|
|
|
|
Loading...