Diesel Data: Automotive Repair
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Part 1








INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION

INITIALIZATION

Procedures necessary when battery terminal is disconnected / reconnected





Procedures necessary when ECU or other parts are replaced









1. PERFORM INITIALIZATION (SFI SYSTEM)
(a) Apply the parking brake and chock the vehicle.
(b) Connect Techstream to the DLC3.
(c) Put the engine in the inspection mode Component Tests and General Diagnostics.
(d) Select the following menu items: Powertrain / Engine / Data List / Coolant Temp.
(e) Warm up the engine with the A/C switch off until the coolant temperature becomes 83°C (181°F) or more.
(f) Select the following menu items: Powertrain / Hybrid Control / Data List / SOC.
(g) Move the shift lever to the N position, set the A/C switch to MAX cool or turn on the front defroster, and leave the vehicle until the SOC value becomes below 40%.
HINT: If the SOC is substantially below 40%, the HV battery may become fully discharged. Therefore, do not allow the SOC to reach substantially below 40%.

(h) Move the shift lever to the P position and turn the power switch off.
(i) Disconnect the negative terminal from the auxiliary battery and leave it for 1 minute or more.
(j) Reconnect the negative terminal to the auxiliary battery and turn the power switch on (IG).
(k) Select the following menu items: Powertrain / Engine / Data List / Coolant Temp.
(l) Check that the engine coolant temperature is 83°C (181°F) or more.
HINT: If the engine coolant temperature is below 83°C (181°F), start the engine by depressing the accelerator pedal with the shift lever in the P position to increase the coolant temperature.

(m) Select the following menu items: Powertrain / Hybrid Control / Data List / Calculate Load.
(n) Move the shift lever to the D position while depressing the brake pedal with your left foot.
(o) Depress the accelerator pedal with your right foot while firmly depressing the brake pedal with your left foot, and maintain an engine load value of 45% or more (accelerator pedal depressed 60 to 70%) for approximately 30 seconds.
NOTICE: Do not perform this step for 40 seconds or more.

(p) Shift the shift lever to the P position. Turn the power switch off and then wait for 5 seconds before putting the vehicle into the READY-on state again.
(q) Select the following menu items: Powertrain / Engine / Data List / ISC Learning.
(r) Check that the air conditioner is off. Lightly depress the accelerator pedal and release it when the engine starts.
(s) Check that "Complete" is displayed on the Techstream screen.
HINT:
- If "ISC Learning" is not completed within 1 minute, repeat steps (o) through (r).
- The engine will usually stop when "ISC Learning" is completed. However, the engine will not stop even when "ISC Learning" is completed in such cases when the charge level of the auxiliary battery is decreased.

2. DESCRIPTION OF INITIALIZATION (TIRE PRESSURE WARNING SYSTEM)
(a) Perform initialization in the following cases:
- Before delivery of a new vehicle.
- After replacement of the tire pressure warning ECU*.
- After replacement of the tire pressure warning valve and transmitter*.
- Specified tire pressure changes depending on the size or type of the tire.
HINT: *: Perform initialization after the transmitter ID registration is completed Registration.

(b) Before initialization
(1) Set the air pressure of all wheels to the specified value Component Tests and General Diagnostics.
NOTICE: Make sure the tires are cooled down.

3. INITIALIZATION PROCEDURE (TIRE PRESSURE WARNING SYSTEM)
(a) Turn the power switch to on (IG).





(b) Press and hold the tire pressure warning reset switch for 3 seconds or more so that the tire pressure warning light blinks 3 times.

(c) Turn the power switch off.
(d) Connect Techstream to the DLC3.
(e) Turn the power switch on (IG) and turn the tester on.
(f) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
(g) Check that the initialization has been completed.
(h) Confirm that the tire pressure data of all tires are displayed on the tester screen.
NOTICE:
- The initialization is normally completed within 2 to 3 minutes.
- If the initialization has not been completed successfully, DTC C2177/77 is set 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 TC and CG of the DLC3 connector.




(1) Techstream

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 C2124/24 C2121.

4. DESCRIPTION OF CODE REGISTRATION (TIRE PRESSURE WARNING SYSTEM)
It is necessary to register the transmitter ID in the tire pressure warning ECU when replacing the tire pressure warning valve and transmitter and/or tire pressure warning ECU.
Prepare all transmitter ID data before starting registration.
(a) Before registration
(1) If replacing the tire pressure warning ECU:

- Read the registered transmitter IDs that are stored in the old ECU using Techstream and note them down.
- If reading 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 valves and transmitters Service Precautions.
(2) If replacing the tire pressure warning valve and transmitter:

- 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 on the tire and wheel. Therefore, take a note of the transmitter ID before installing the tire pressure warning valve and transmitter.

5. REGISTER TRANSMITTER ID (USING TECHSTREAM) (TIRE PRESSURE WARNING SYSTEM)
(a) Set the air pressure of all wheels to the specified value Component Tests and General Diagnostics.
(b) Turn the power switch off.
(c) Connect Techstream to the DLC3.
(d) Turn the power switch on (IG) and Techstream on.
(e) Enter the menu items in this order: Chassis / Tire Pressure Monitor / Utility / ID Registration
(f) Perform the following procedures displayed on the screen.
(g) Confirmation of transmitter ID registration.
(1) Enter the menu items in this order: Chassis / Tire Pressure Monitor / Data List
(2) Read the "ID Tire Inflation Pressure" values.
(3) Confirm that the data of tire pressure of all tires are displayed on the 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 C2124/24 C2121.
- If the IDs have not been registered, DTC C2171/71 is set 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.
- After all IDs are registered, DTC C2126/26 (Transmitter ID not Received in Main Mode) is set 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 successfully receives radio waves from all the transmitters whose IDs are stored in the ECU, DTC C2126/26 is deleted and the tire pressure warning light goes off.

6. DESCRIPTION (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)
(a) Perform initialization of linear solenoid valve and calibration when the skid control ECU, brake actuator or brake pedal stroke sensor is replaced.
Follow the procedure to perform initialization.
HINT:
- If there is a problem with the auxiliary battery (12 V) voltage, initialization of linear solenoid valve and calibration cannot be completed normally. Make sure to check the auxiliary battery voltage before performing initialization of linear solenoid valve and calibration.
- If the actuator's temperature is high, initialization of linear solenoid valve and calibration may not be completed normally. In such a case, wait until the temperature decreases and then perform initialization of linear solenoid valve and calibration.
- If the power switch is turned off, the brake pedal is operated or vehicle speed is input while the linear solenoid valve offset learning is being performed, the learning will be cancelled.





7. PERFORM INITIALIZATION OF LINEAR SOLENOID VALVE AND CALIBRATION (TECHSTREAM) (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)
(a) Clear the stored value of linear solenoid valve and calibration data.
(1) Turn the power switch off.
(2) Connect Techstream to the DLC3.
(3) Move the shift lever to the P position.
(4) Turn the power switch on (IG) with the brake pedal released.
(5) Perform the Reset Memory function under the ABS/VSC/TRAC menu.
(6) Perform initialization of linear solenoid valve.
(7) Perform zero point calibration of yaw rate and acceleration sensor Calibration.
(b) Perform the initialization of linear solenoid valve and calibration.
(1) Turn the power switch off.
(2) Connect Techstream to the DLC3.
(3) Move the shift lever to the P position.
(4) Turn the power switch on (IG) with the brake pedal released.
NOTICE:
- If the linear solenoid valve offset learning is performed without turning the power switch on (IG), the learning process may not be completed properly because of insufficient auxiliary battery voltage.
- When the linear solenoid valve offset learning is interrupted, or the learning process is performed with the shift lever not in the P position, DTC C1345/66 will be stored C1345.
(5) Set Techstream to Test Mode (select "ECB* Utility").
*: Electronically Controlled Brake
HINT: Refer to the Techstream operator's manual for further details.
(6) Leave the vehicle stationary without depressing the brake pedal for 1 or 2 minutes.




(7) Check that the interval between blinks of the brake control warning light changes from 1 second to 0.25 seconds.
HINT :
- The time needed to complete initialization of linear solenoid valve and calibration varies depending on auxiliary battery voltage.
- The brake control warning light blinks at 1 second intervals during initialization of linear solenoid valve and calibration and changes to the Test Mode display.
- The brake control warning light blinks at 0.25 seconds intervals if the Test Mode is normal.
(8) Check that DTC C1345/66 which indicates trouble with stroke sensor zero point learning is not output when the brake control warning light changes to the Test Mode display upon initialization of linear solenoid valve and calibration completion.
(9) Enter the normal mode from the Test Mode following Techstream prompts.
HINT: Refer to the Techstream operator's manual for further details.

8. PERFORM INITIALIZATION OF LINEAR SOLENOID VALVE AND CALIBRATION (SST CHECK WIRE) (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)
(a) Clear the stored value of linear solenoid valve and calibration data.




(1) Turn the power switch off.
(2) Move the shift lever to the P position.
(3) Turn the power switch on (IG) with the brake pedal released.
(4) Using SST, connect and disconnect terminals TS and CG of the DLC3 4 times or more within 8 seconds.
SST: 09843-18040
(5) Check that no codes other than ABS code 42, VSC code 45 and Electronically Controlled Brake code 48, 66, or 95 are stored in the diagnostic system.




HINT:
- The ABS warning, brake control warning lights and multi information display do not indicate the normal system code.
- Illustrations may differ from the actual screen displayed depending on the specifications of the vehicle and customized settings.
(6) Remove the SST from the terminals of the DLC3.
(7) Using the check wire, perform initialization of linear solenoid valve and calibration.
(b) Perform initialization of linear solenoid valve and calibration.
(1) Turn the power switch off.




(2) Using SST, connect terminals TS and CG of the DLC3.
SST: 09843-18040
(3) Move the shift lever to the P position.
(4) Turn the power switch on (IG) with the brake pedal released.
NOTICE:
- If the linear solenoid valve offset learning is performed without turning the power switch on (IG), the learning process may not be completed properly because of insufficient auxiliary battery voltage.
- When the linear solenoid valve offset learning is interrupted, or the learning process is performed with the shift lever not in the P position, DTC C1345/66 will be stored C1345.
(5) Leave the vehicle stationary without depressing the brake pedal for 1 or 2 minutes.




(6) Check that the interval between blinks of the brake control warning light changes from 1 second to 0.25 seconds.
HINT :
- The time needed to complete initialization of linear solenoid valve and calibration varies depending on the auxiliary battery voltage.
- The brake control warning light blinks at 1 second intervals during initialization of linear solenoid valve and calibration and changes to the Test Mode display.
- The brake control warning light blinks at 0.25 seconds intervals if the Test Mode is normal.
(7) Check that DTC C1345/66 which indicates trouble with stroke sensor zero point learning is not output when the brake control warning light changes to the Test Mode display upon initialization of linear solenoid valve and calibration completion.
(8) Turn the power switch off and disconnect the SST from the DLC3.
9. DESCRIPTION (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)

- After replacing the VSC relevant components or performing "Front wheel alignment adjustment", clear and read the sensor calibration data.
- Follow the chart to perform calibration.





10. PERFORM ZERO POINT OF YAW RATE AND ACCELERATION SENSOR (TECHSTREAM) (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)
NOTICE:
- While obtaining the zero point, keep the vehicle stationary and do not vibrate, tilt, move, or shake it. (Do not turn the power switch on (READY).)
- Be sure to perform this procedure on a level surface (with an inclination of less than 1 degree).

(a) Clear the zero point calibration data.
(1) Turn the power switch off.
(2) Connect Techstream to the DLC3.
(3) Check that the steering wheel is centered and move the shift lever to the P position.
(4) Turn the power switch on (IG).
(5) Operate Techstream to erase the codes (select "Reset Memory").
HINT: Refer to the Techstream operator's manual for further details.
(6) Turn the power switch off.
(b) Perform zero point calibration of the yaw rate and acceleration sensor.
(1) Turn the power switch off.
(2) Check that the steering wheel is centered and move the shift lever to the P position.
NOTICE: DTCs C1210/36 and C1336/98 will be recorded if the shift lever is not in the P position C1210.
(3) Connect Techstream to the DLC3.
(4) Turn the power switch on (IG).
(5) Set Techstream to Test Mode (select "Test Mode").
HINT: Refer to the Techstream operator's manual for further details.
(6) After the Test Mode has been entered, keep the vehicle stationary on a level surface for 2 seconds or more.




(7) Check that the ABS warning, brake control warning and master caution indicator lights blink and a check VSC system message is displayed on the multi information display (Test Mode).
HINT :
- The SLIP indicator remains on during Test Mode because TRAC is prohibited.
- If the ABS warning, brake control warning and master caution indicator lights do not blink and/or a check VSC system message is not displayed on the multi information display, perform zero point calibration again.
- The zero point calibration is performed only once after the system enters the Test Mode.
- Calibration cannot be performed again until the stored data is cleared.
- Illustrations may differ from the actual screen displayed depending on the specifications of the vehicle and customized settings.
(8) Turn the power switch off and disconnect Techstream.
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