Part 1
INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION
INITIALIZATION
Procedures necessary when battery terminal is disconnected / reconnected
NOTE:
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.
Procedures necessary when ECU or other parts are replaced
1. SFI SYSTEM
NOTE:
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 (Using Techstream)
NOTE:
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.
- 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's 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 VIN and VIN do not match, the VIN can be registered, or overwritten in the ECM by following this procedure.
1 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 / Utility / VIN / VIN Read.
2 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 / Utility / VIN / VIN Write.
2. AUTOMATIC TRANSMISSION SYSTEM (REGISTRATION)
NOTICE:
- When the automatic transmission is replaced, the transmission compensation code must be input into the TCM (Proceed to step 1).
After the automatic transmission is installed, the Quick Response (QR) code label will be positioned where the code cannot be read. Therefore, before installing the automatic transmission, record the transmission compensation codes or input them into the Techstream.
- When the TCM is replaced, the existing transmission compensation codes must be input into the new TCM (Proceed to step 2).
(a) SET TRANSMISSION COMPENSATION CODE INTO TCM (step 1)
NOTE:
Transmission compensation codes are unique, 60-digit alphanumeric values printed on the QR label. If an incorrect transmission compensation code is input into the TCM, shift shock may occur.
(1) Record the transmission compensation code specified on the QR label.
HINT: The transmission compensation code is a 60-digit alphanumeric value imprinted on the QR label.
(2) Move the shift lever to the N or P position.
(3) Connect the Techstream to the DLC3.
(4) Turn the engine switch on (IG).
NOTE:
Do not start the engine.
(5) Turn the Techstream on.
(6) Enter the following menus: Powertrain / ECT / Utility / A/T Code Registration.
(7) Select "Set Compensation Code".
(8) Register the compensation code.
(9) Manually input the transmission compensation code.
(10) Check that the compensation code displayed on the screen is correct by comparing it with the 60-digit alphanumeric value on the QR label.
NOTE:
If an incorrect transmission compensation code is input into the TCM, shift shock will occur.
HINT: Input alphabetical letters using the Techstream.
(11) Set the compensation code to the TCM.
(b) TRANSFER TRANSMISSION COMPENSATION CODE (step 2)
NOTE:
Transmission compensation codes are unique, 60-digit alphanumeric values printed on the QR label. If an incorrect transmission compensation code is input into the TCM, shift shock may occur.
HINT: The following operation is available for use with TCMs that can transmit the registered transmission compensation code to the Techstream.
(1) Read the transmission compensation code.
1 Move the shift lever to the N or P position.
2 Connect the Techstream to the DLC3.
3 Turn the engine switch on (IG).
NOTE:
Do not start the engine.
4 Turn the Techstream on.
5 Enter the following menus: Powertrain / ECT / Utility / A/T Code Registration.
6 Select "Read Compensation Code".
NOTE:
Do not use the code specified on the transmission QR label even if the transmission compensation code cannot be read using the Techstream. The code printed on an in-service transmission may not match its current characteristics. Replace the TCM with a new one and perform a road test to allow the TCM to learn.
7 Turn the engine switch off.
8 Replace the TCM.
(2) Set the transmission compensation code.
1 Turn the engine switch on (IG).
NOTE:
Do not start the engine.
2 Turn the Techstream on.
3 Enter the following menus: Powertrain / ECT / Utility / A/T Code Registration.
4 Select "Set Compensation Code".
5 Press "Open".
6 Select "Open".
7 Set the compensation code to the TCM.
3. AUTOMATIC TRANSMISSION SYSTEM (INITIALIZATION)
(a) PERFORM ROAD TEST TO ALLOW TCM TO LEARN
CAUTION:
- Perform the following procedures while strictly observing all traffic laws and speed limits.
- Do not accelerate or decelerate rapidly.
(1) "Road test" procedure is as follows:
1 Warm up the engine.
2 According to the replacement parts, perform the road test shown below.
HINT:
- *1: After gradually accelerating a distance of approximately 130 m (426.4 ft.) for a period of approximately 15 seconds, gradually decelerate a distance of approximately 45 m (147.6 ft.) for a period of approximately 5 seconds.
- *2: After gradually accelerating a distance of approximately 40 m (131.2 ft.) for a period of approximately 8 seconds, gradually decelerate a distance of approximately 20 m (65.6 ft.) for a period of approximately 5 seconds.
- When decelerating, apply the brakes as necessary to adjust the vehicle speed.
HINT:
- *1: The speed, time and distance values are approximate values.
- *2: After accelerating, the deceleration does not need to be performed immediately.
3 Repeat until the shift shock and engine speed overrun settles down.
NOTE:
Before repeating tests, stop the vehicle once, and then start moving the vehicle again.
(b) RESET MEMORY
NOTICE:
- Perform the Reset Memory (AT initialization) when replacing the engine assembly or ECM.
- The Reset Memory can be performed only with the Techstream.
- Reset Memory cannot be completed by only reconnecting the cable to the negative (-) battery terminal.
HINT: The TCM memorizes the vehicle conditions when the ECT controls the automatic transmission assembly and engine assembly.
(1) The "Reset Memory" procedure is as follows:
1 Turn the engine switch off.
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 / ECT / Utility / Reset Memory.
NOTE:
After performing the Reset Memory, be sure to perform the ROAD TEST described previously.
4. AIR SUSPENSION SYSTEM
(a) DESCRIPTION
(1) If the suspension control ECU is replaced with a new one, enter test mode and perform registration of vehicle identification information.
(2) If replacing the suspension control ECU and/or height control sensor, perform the vehicle height offset calibration.
(b) REGISTRATION OF VEHICLE IDENTIFICATION INFORMATION
NOTICE:
- The CAN communication system must be functioning normally.
- Make sure that the ECM and AFS ECU are the correct type, normally functioning and correctly installed.
HINT: Vehicle identification information is obtained automatically through CAN communication when in test mode.
(1) Turn the engine switch off.
(2) Connect the Techstream to the DLC3.
(3) Turn the engine switch on (IG).
(4) Turn the Techstream on.
(5) Enter the following menus: Chassis / Air suspension / Utility / Signal Check.
(6) Confirm that the system is in test mode by checking that the "SPORT" indicator light in the combination meter blinks at 0.125 second intervals (0.125 seconds on and 0.125 seconds off).
- When the vehicle identification information is stored, the "SPORT" indicator light blinks at 0.125 second intervals (0.125 seconds on and 0.125 seconds off).
- When vehicle identification information is not stored, the "SPORT" indicator light blinks at 1 second intervals (1 second on and 1 second off).
5. 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 on N.
1. PERFORM VEHICLE HEIGHT INSPECTION
(a) Adjust the pressure of the tires.
(b) Stabilize the suspension by releasing the parking brake and bouncing the corners of the vehicle up and down.
(c) Turn the engine switch off.
(d) Connect the Techstream to the DLC3.
(e) Start the engine and the Techstream on.
(f) Enter the following menus: Chassis / Air suspension / Data List.
(g) Press the height control switch and adjust the vehicle height to "HEIGHT HIGH".
(h) Press the height control switch and return the vehicle height to normal.
(i) Using the Data List, confirm that the vehicle height control operation is complete.
Air suspension
(j) Turn the engine switch off.
(k) Move the shift lever to N and move the vehicle forward and rearward.
(l) Turn the engine switch on (IG).
(m) Using the Techstream
Enter the following menus: Chassis / Air suspension / Data List. Then read and write the values for "After Height Adjust" and "Height Adjust" for each wheel.
Air suspension
(n) Turn the engine switch off.
(o) Perform the vehicle height inspection.
(1) for 2WD:
Standard vehicle height:
Measuring points:
A
Ground clearance of front wheel center
B
Ground clearance of front suspension lower No. 2 arm assembly front bush installation bolt head rear
C
Ground clearance of protrusion of rear suspension arm attachment (lower No. 2 installation cam bolt)
D
Ground clearance of rear wheel center
(2) for AWD:
- Bounce the vehicle at the corners up and down to stabilize the suspension and inspect the vehicle height.
Standard vehicle height:
Measuring points:
A
Ground clearance of front wheel center
B
Ground clearance of head center of bolt used to install the front No. 1 suspension lower arm to the front suspension member
C
Ground clearance of rear wheel center
D
Ground clearance of pit center of the attachment rear suspension arm
NOTE:
Before inspecting the wheel alignment, adjust the vehicle height to the specified value.
If the vehicle height is not as specified, adjust the height by pressing down on the vehicle several times to stabilize the suspension.
NEXT -- Continue to next step.
2. PERFORM VEHICLE HEIGHT OFFSET CALIBRATION
NOTE:
The possible vehicle height automatic adjustment value is 20 mm (0.78 in.). If the "Height Adjust" value + (Standard value - Measurement value - "After Height Adjust" value) is 20 mm (0.78 in.) or more, first perform the vehicle height adjustment (height control link adjustment).
(a) Turn the engine switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the engine switch on (IG).
(d) Turn the Techstream on.
(e) Enter the following menus: Chassis / Air suspension / Utility / Height Offset.
(f) 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
(g) Start the engine.
(h) In the Data List, enter "Height Control".
(i) Press the height control switch and adjust the vehicle height to "HEIGHT HIGH".
(j) Press the height control switch and return the vehicle height to normal.
(k) Using the Data List, confirm that the vehicle height control operation is complete.
Air suspension
(l) Turn the engine switch off.
(m) Perform the vehicle height inspection. Check that the result is within +/-14.3 mm (+/-0.56 in.) of the standard value.
NEXT -- END