High Strength Steel (HSS)
High strength steel is used for body panels in order to reduce vehicle weight.
Accordingly, precautions in repairing automotive bodies made of high strength steel are described below:
Tensile strength |
Major applicable parts |
440 - 780 MPa |
|
980 - 1350 MPa |
|
Read the following precautions when repairing HSS:
When heating is unavoidable, do not heat HSS parts above 550°C (1,022°F).
Verify heating temperature with a thermometer.
(Crayon-type and other similar type thermometer are appropriate.)
Instead, use a saw to avoid weakening surrounding areas due to heat. If gas (torch) cutting is unavoidable, allow a minimum margin of 50 mm (1.97 in).
If spot welding is impossible, use MIG. welding. Do not use gas (torch) for welding because it is inferior in welding strength.
Therefore, when cutting spot welds on a HSS panel, use a low speed high torque drill (1,000 to 1,200 rpm) to increase drill bit durability and facilitate the operation.
Always note the following when spot welding HSS:
Handling of Ultra High Strength Steel Plate Parts
PROHIBITION OF CUT AND CONNECTION
Never cut and Joint the stiffener front side member (front floor inside frame parts) because its material is high strength steel plate (ultra high strength steel plate).
The front floor assembly must be replaced if this part is damaged.
Warning systems switch (if so equipped)
Warning systems switch (if so equipped)
The warning systems switch is used to turn on
and off the warning systems (Lane Departure
Warning (LDW), Forward Collision Warning
(FCW) and Blind SpotWarning (BSW) systems)
that are activated using the settings menu on the
vehicle information displa ...
DTC/circuit diagnosis
U1000 CAN COMM CIRCUIT
Description
Refer to LAN-8, "System Description".
DTC Logic
DTC DETECTION LOGIC
NOTE:
U1000 can be set if a module harness was disconnected and reconnected, perhaps
during a repair. Confirm
that there are actual CAN diagnostic symptoms and a present DTC by p ...
Periodic maintenance
HEADLAMP AIMING ADJUSTMENT
Inspection
PREPARATION BEFORE ADJUSTING
Before performing aiming adjustment, check the following:
Make sure all tires are inflated to correct pressure.
Place vehicle and screen on level surface.
Make sure there is no load in vehicle other than ...