Part 1
INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION
1. Procedures necessary when cable is disconnected/reconnected to battery terminal
Procedures Necessary when Cable is Disconnected/Reconnected to Battery Terminal
w/ Navigation system:
NOTICE:
After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal.
2. Procedures necessary when ECU or other parts are replaced
Procedures Necessary when ECU or Other Parts are Replaced
3. REGISTRATION RELATED TO ECM
NOTICE:
The Vehicle Identification Number (VIN) must be input into the replacement ECM.
HINT:
The VIN is in the form of a 17-digit alphanumeric vehicle identification number. The Techstream is required to register the VIN.
(a) DESCRIPTION
HINT:
This registration section consists of two parts: Read VIN and Write VIN.
(1) Read VIN: Explains the VIN reading process in a flowchart. This process allows the VIN stored in the ECM to be read in order to confirm that the two VINs, provided with the vehicle and stored in the vehicle ECM, are the same.
(2) Write VIN: Explains the VIN writing process in a flowchart. This process allows the VIN to be input into the ECM. If the ECM is changed, or the ECM VIN and vehicle VIN do not match, the VIN can be registered, or overwritten in the ECM by following this procedure.
(b) READ VIN
(1) Confirm the vehicle VIN.
(2) Connect the Techstream to the DLC3.
(3) Turn the engine switch on (IG).
(4) Turn the Techstream on.
(5) Enter the following menus: Powertrain / Engine and ECT / Utility / VIN / VIN Read.
(c) WRITE VIN
(1) Confirm the vehicle VIN.
(2) Connect the Techstream to the DLC3.
(3) Turn the engine switch on (IG).
(4) Turn the Techstream on.
(5) Enter the following menus: Powertrain / Engine and ECT / Utility / VIN / VIN Write.
4. INITIALIZATION RELATED TO DISTANCE CONTROL ECU
NOTICE:
After removing and installing or replacing the distance control ECU, be sure to perform the following procedures.
(a) INITIALIZE DISTANCE CONTROL ECU
(1) Turn the engine switch on (IG).
(2) Turn the cruise control main switch on.
(3) Depress the brake pedal (brake switch on).
(4) With the brake pedal depressed, push the cruise control main switch to +RES 3 times within 3 seconds, and check that the buzzer sounds.
NOTICE:
At this time, do not turn the headlight dimmer switch on. Due to the activation of the beam axis automatic adjustment mode, turning the headlight dimmer switch on may result in an incorrect setting. If the headlight dimmer switch is turned on by mistake, perform the beam axis adjustment again.
5. INITIALIZATION RELATED TO AUTOMATIC TRANSMISSION
(a) RESET MEMORY
NOTICE:
- Perform the Reset Memory (AT initialization) when replacing the automatic transmission assembly, valve body assembly or any of the shift solenoid valves.
- The Reset Memory can only be performed with the Techstream.
HINT:
The ECM memorizes the control conditions of the automatic transmission assembly and engine assembly. Therefore, when the automatic transmission assembly, valve body assembly or any of the shift solenoid valves has been replaced, it is necessary to reset the memory so that the ECM can memorize the new information.
(1) Connect the Techstream to the DLC3.
(2) Turn the engine switch on (IG).
(3) Turn the Techstream on.
(4) Enter the following menus: Powertrain / Engine and ECT / Utility / Reset Memory.
NOTICE:
After performing the Reset Memory, be sure to perform the Road Test described earlier.
HINT:
The ECM learns through the Road Test.
6. INITIALIZATION RELATED TO SUSPENSION
(a) DESCRIPTION
(1) If replacing the suspension control ECU and/or height control sensor, perform the vehicle height offset calibration.
(b) VEHICLE HEIGHT OFFSET CALIBRATION
NOTICE:
- Make sure that the pressure of the tires is normal.
- Make sure that the vehicle is empty.
- Make sure that the parking brake is released and that the shift lever is in N.
- Make sure that the easy access mode switch is off.
(1) PERFORM VEHICLE HEIGHT INSPECTION
1 Adjust the pressure of the tires.
2 Stabilize the suspension by releasing the parking brake and bouncing the corners of the vehicle up and down.
3 Start the engine.
4 Perform the following operation twice:
Set the vehicle height to LO with the height control switch, and then return the vehicle height to NORMAL.
5 Turn the engine switch off.
6 Connect the Techstream to the DLC3.
7 Move the shift lever to N and move the vehicle forward and rearward.
8 Turn the engine switch on (IG) and the Techstream on.
HINT:
Make sure the engine is not running.
9 Check that the vehicle height is NORMAL.
HINT:
The N of the multi-information display height control indicator in the combination meter turns on.
10 Perform the vehicle height inspection.
Measuring points:
A
Ground clearance of front wheel center
B
Ground clearance of the front adjusting cam bolt center
C
Ground clearance of the rear axle shaft center
D
Ground clearance of the rear lower control arm front side center
Standard Vehicle Height:
11 Using a jack, set the vehicle to the standard vehicle height and eliminate any difference in height between the left and right sides of the vehicle.
NOTICE:
The vehicle height may be outside the calibration range if there is a difference in height between the left and right sides of the vehicle.
12 Using the Techstream, enter the following menus: Chassis / AHC / Data List. Then read and record the values for "After Height Adjust" and "Height Adjust" for each wheel.
AHC
13 Turn the engine switch off.
(2) PERFORM VEHICLE HEIGHT OFFSET CALIBRATION
NOTICE:
The possible vehicle height automatic adjustment value is 20 mm (0.787 in.). If the "Height Adjust value + (Standard value - Measurement value - After Height Adjust value)" is 20 mm (0.787 in.) or more, first perform the vehicle height adjustment for the front side, and for the rear side.
1 Turn the engine switch off.
2 Connect the Techstream to the DLC3.
3 Turn the engine switch on (IG) and the Techstream on.
4 Enter the following menus: Chassis / AHC / Utility / Height offset.
5 For each wheel, follow the instructions on the Techstream screen and input the input value to complete the vehicle height offset calibration.
HINT:
Input value = Measurement value and standard value
6 Remove the jack.
7 Start the engine.
8 Set the vehicle height to LO and check that LO of the multi-information display height control indicator stops blinking and illuminates.
9 Set the vehicle height to NORMAL and check that N of the height control indicator stops blinking and illuminates.
10 Turn the engine switch off.
11 Perform the vehicle height inspection. Check that the result is within +/-8 mm (+/-0.315 in.) of the standard value.
12 Perform yaw rate and G sensor zero point calibration.
7. REGISTRATION RELATED TO TIRE PRESSURE WARNING
(a) DESCRIPTION OF CODE REGISTRATION
It is necessary to register the transmitter ID in the tire pressure warning ECU when replacing a tire pressure warning valve and transmitter and/or the tire pressure warning ECU:
Prepare all transmitter ID data before starting registration.
(1) Before registration
1 In case of tire pressure warning ECU replacement:
- Read the registered transmitter IDs that are stored in the old ECU using the Techstream and note them down.
- If reading the stored transmitter IDs is impossible due to malfunctions of components such as the tire pressure warning antenna and receiver, remove the tires from the wheels and check the IDs located on the tire pressure warning valve and transmitters.
2 In case of tire pressure warning valve and transmitter replacement:
- Take a note of the 7 digit number (transmitter ID) written on the tire pressure warning valve and transmitter.
NOTICE:
The transmitter ID is written on the tire pressure warning valve and transmitter. It will be unable to be read after installing the tire pressure warning valve and transmitter to the tire and wheel. Therefore, take a note of the transmitter ID before installing the tire pressure warning valve and transmitter.
(b) REGISTER TRANSMITTER ID (USING TECHSTREAM)
(1) Set the air pressure of all tires to the specified value(s).
(2) Turn the engine switch off.
(3) Connect the Techstream to the DLC3.
(4) Turn the engine switch on (IG) and the Techstream on.
(5) Enter the following menus: Chassis / Tire Pressure Monitor / Utility / ID Registration.
(6) Perform the procedures displayed on the Techstream.
HINT:
- The previously registered IDs will be cleared from the memory when the registration is completed.
- Registration can be performed during initialization. However, the initialization will be canceled when the registration is started.
- If this step is not completed within 300 seconds, this mode will be canceled.
(7) Confirmation of transmitter ID registration:
1 Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
2 Read the "ID Tire Inflation Pressure" values.
3 Confirm that the tire pressure data of all tires (including the spare tire) is displayed on the Techstream screen.
NOTICE:
- It may take up to about 2 or 3 minutes to update the tire pressure data. If the values are not displayed after a few minutes, perform troubleshooting according to the inspection procedure for DTCs C2121/21 to C2125/25.
- If the IDs have not been registered, DTC C2171/71 is stored in the tire pressure warning ECU after 3 minutes or more.
- If normal pressure values are displayed, the IDs have been registered correctly.
- If the tire pressure values are not displayed after a few minutes, the IDs may be incorrect or the system may have a malfunction.
- The tire pressure information reception condition can also be confirmed through the multi-information display tire pressure display screen.
- After all IDs are registered, DTC C2126/26 is stored in the tire pressure warning ECU and the tire pressure warning light blinks for 1 minute and then comes on. When the tire pressure warning ECU and receiver successfully receives information from all the transmitters whose IDs are stored in the ECU, DTC C2126/26 is cleared and the tire pressure warning light goes off.
8. INITIALIZATION RELATED TO TIRE PRESSURE WARNING
(a) DESCRIPTION OF INITIALIZATION
(1) Perform initialization in the following cases:
- Before delivery of a new vehicle.
- After replacement of the tire pressure warning ECU.*
- After replacement of a tire pressure warning valve and transmitter.*
- Specified tire pressure changes depending on the size or type of tire.
- Changing the standard tire inflation pressure value due to trailer towing.
HINT:
*: Perform initialization after the transmitter ID registration is completed.
(2) Before initialization
1 Set the tire pressure of all tires to the specified value(s).
NOTICE:
Make sure the tires are cooled down.
(b) INITIALIZATION PROCEDURE
(1) Turn the engine switch on (IG).
(2) Press and hold the tire pressure warning reset switch for 3 seconds or more so that the tire pressure warning light blinks 3 times.
(3) Turn the engine switch off.
(4) Connect the Techstream to the DLC3.
(5) Turn the engine switch on (IG) and turn the Techstream on.
(6) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
(7) Check that the initialization has been completed.
(8) Confirm that the tire pressure data of all tires is displayed on the Techstream screen.
NOTICE:
- The initialization is normally completed within 2 to 3 minutes.
- If the initialization has not been completed successfully, DTC C2177/77 is stored after a vehicle speed of 8 km/h (5 mph) or more continues for 20 minutes or more.
- While in test mode, the system will not change to initialization mode even if the tire pressure warning reset switch is pushed.
- The initialization can be terminated by connecting terminals 13 (TC) and 4 (CG) of the DLC3.
Tire Pressure Monitor
HINT:
- The initialization is complete when the Data List "ID Tire Inflation Pressure" display shows the correct pressures.
- *: It may take about 2 or 3 minutes until the values are displayed. If the values are not displayed after a few minutes, perform troubleshooting according to the inspection procedure for DTCs C2121/21 to C2125/25.
(c) INITIALIZATION PROCEDURE (MULTI-INFORMATION DISPLAY)
(1) Turn the engine switch on (IG).
(2) Press and hold the tire pressure warning reset switch for 3 seconds or more so that the tire pressure warning light blinks 3 times.
HINT:
- The initialization can be confirmed through the multi-information display.
- The order in which the data is received is random.
- If the signals from all the wheels are received, the initialization is complete.
- It may take about 2 or 3 minutes until the values are displayed. If the values are not displayed after a few minutes, perform troubleshooting according to the inspection procedure for DTCs C2121/21 to C2125/25.
NOTICE:
- If the initialization has not been completed successfully, DTC C2177/77 is stored after a vehicle speed of 8 km/h (5 mph) or more continues for 20 minutes or more.
- The initialization can be terminated by connecting terminals 13 (TC) and 4 (CG) of the DLC3.
- While in test mode, the system will not change to initialization mode even if the tire pressure warning reset switch is pushed.