2GR-FE Engine Starting System: Other Toyota Avalon XX30 рестайлинг

PRECAUTION

Note. When disconnecting the negative (-) battery terminal, initialize the following system(s) after the terminal is reconnected.

SYSTEM SPECIFICATIONS

1. Precautions for the push button start function: Before starting the engine, firmly depress the brake pedal until the indicator of the engine switch lights up in green. The power source condition (OFF, ACC, ON) is always stored in the vehicle. After the battery is removed and reinstalled, the power source condition before battery removal will be restored. Be sure to turn the engine switch off before disconnecting the cable from the battery terminal. Always be aware of the power source condition before the battery dies or is removed. After the battery is removed and reinstalled, be sure to wait 10 seconds or more before engine start. The engine may not start immediately after the battery is reinstalled. If the key is held over the engine switch to start the engine because the key battery has died, the following warnings will sound: Driver's door open --> close: Warning that the P position power remains on Warning that any of power for the shift positions other than P remains on Doors other than the driver's door open --> close: Warning that any of the passengers is carrying the key out of the vehicle These warnings will sound because whether the key is in the cabin or not cannot be determined. They do not indicate system malfunctions.

ENTRY AND START SYSTEM

PROBLEM SYMPTOMS CHART

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1. CHECK POWER SOURCE CONTROL ECU ASSEMBLY Disconnect the D44 ECU connector. Measure the resistance and voltage of the wire harness side connector. Standard TERMINAL DESCRIPTION SPECIFIED CONDITION CHART Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition AM1 (D44-33) - Body ground W - Body ground +B power supply Always 10 to 14 V AM2 (D44-12)-Body ground L - Body ground +B power supply Always 10 to 14 V SSW1 (D44-14) - Body ground L - Body ground Engine switch signal Engine switch pushed --> Not pushed Below 1 ohms --> 10 kohms or higher SSW2 (D44-37) - Body ground V - Body ground Engine switch signal Engine switch pushed --> Not pushed Below 1 ohms --> 10 kohms or higher GND2 (D44-6) - Body ground W-B - Body ground Ground Always Below 1 ohms MPX1 (D44-7) - Body ground B - Body ground MPX line Always 10 kohms or higher MPX2 (D44-24) - Body ground LG - Body ground MPX line Always 10 kohms or higher LIN1 (D44-30) - Body ground BR - Body ground LIN line Always 10 kohms or higher If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the D44 ECU connector. Measure the voltage of the connector. Standard voltage TERMINAL DESCRIPTION SPECIFIED CONDITION CHART Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition ACCD (D44-11) - GND2 (D44-6) R - W-B ACC signal Engine switch OFF --> Engine switch ON (ACC) Below 1 V --> 10 to 14 V IG1D (D44-34) - GND2 (D44-6) LG - W-B IG1 signal Engine switch ON (ACC) --> Engine switch ON (IG) Below 1 V --> 10 to 14 V IG2D (D44-35) - GND2 (D44-6) Y - W-B IG2 signal Engine switch ON (ACC) --> Engine switch ON (IG) Below 1 V --> 10 to 14 V STP (D44-1) - GND2 (D44-6) LG - W-B Stop light signal Brake pedal depressed --> Released 10 to 14 V --> Below 1 V SLR+ (D44-32) - GND2 (D44-6) BR - W-B Power source for steering lock actuator Steering lock motor operate --> not operate Below 1 V --> 10 to 14 V SLP (D44-26) - GND2 (D44-6) GR - W-B Steering lock actuator UNLOCK position signal Steering is locked --> released 10 to 14 V --> Below 1 V SPD (D44-19) - GND2 (D44-6) W - W-B Vehicle speed signal Engine switch ON (IG), Rotate driving wheel slowly Pulse generation TACH (D44-2) - Body ground L - Body ground Engine revolution speed signal Idling Pulse generation (see 1 waveform 1) P (D44-5) - Body ground P - Body ground Shift lock signal Shift lever P position --> D position Below 1 V --> 10 to 14 V CTSW (D44-31) - Body ground O - Body ground Starter assist signal Brake pedal depressed, Engine switch ON (START) ( (1) ) Below 1 V STSW (D44-39) - Body ground R - Body ground Starter activation request signal Brake pedal depressed, Engine switch ON (START) ( (2) ) 10 to 14 V STR1 (D44-17) - GND2 (D44-6) B - W-B Park / neutral position switch Shift lever P or N position, Engine switch ON (START) 10 to 14 V STR2 (D44-15) - GND2 (D44-6) SB - W-B Starter signal Shift lever P or N position, Engine switch ON (START) 10 to 14 V INDS (D44-4) - Body ground Y - Body ground Vehicle condition signal Brake pedal depressed, Shift lever P or N position, Engine switch ON (ACC, IG, START) 10 to 14 V INDW (D44-13) - Body ground GR - Body ground Warning signal Smart key system malfunction Pulse generation SWIL (D44-36) - Body ground R - Body ground Illumination signal Light control switch TAIL or HEAD 10 to 14 V (1) Voltage is output only when the engine is cranking. (2) Voltage is output for 0.3 seconds after engine start. If the result is not as specified, the ECU may have a malfunction. WAVEFORM 1 Engine speed signal WAVEFORM REFERENCE ECM Terminal Names Between TACH and E1 Tester Ranges 5V/DIV, 10 msec./DIV Conditions Idling HINT: The wavelength becomes shorter as the engine rpm increases.
2. CHECK CERTIFICATION ECU Disconnect the D39 ECU connector. Measure the resistance of the wire harness side connector. Standard resistance ECU CONNECTOR TERMINALS REFERENCE Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition LIN (D39-10) - Body ground BR - Body ground LIN line Always 10 kohms or higher E (D39-17) - Body ground W-B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the D39 ECU connector. Measure the voltage of the connector. Standard voltage TESTER CONNECTION SPECIFIED CONDITION CHART Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition +B1 (D39-1) - E (D39-17) R - W-B Battery Always 10 to 14 V IG (D39-18) - E (D39-17) Y - W-B Engine switch (IG) Engine switch OFF --> ON (IG) Below 1 V --> 10 to 14 V ACC (D39-19) - E (D39-17) SB-W-B Engine switch (ACC) Engine switch OFF --> ON (ACC) Below 1 V --> 10 to 14 V If the result is not as specified, the ECU may have a malfunction.
3. CHECK ECM Disconnect the A55 and B50 ECM connectors. Measure the resistance and voltage of the connectors. Standard TESTER CONNECTION SPECIFIED CONDITION CHART Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition +B (A55-2) - E1 (B50-81) R - W-B Power source of ECM Engine switch ON (IG) 10 to 14 V +B2 (A55-1) - E1 (B50-81) W - W-B Power source of ECM Engine switch ON (IG) 10 to 14 V IGSW (A55-28) - E1 (B50-81) Y - W-B Ignition switch signal Engine switch ON (IG) 10 to 14 V E01 (B50-22) - Body ground W-B - Body ground Earth (ground) circuit of ECM Always Below 1 ohms E1 (B50-81) - Body ground W-B - Body ground Earth (ground) circuit of ECM Always Below 1 ohms If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the A55 and B50 ECM connectors. Measure the voltage of the connectors. Standard voltage TESTER CONNECTION SPECIFIED CONDITION CHART Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition STA (A55-48) - E1 (B50-81) V - W-B Starter relay operation signal Cranking 10 to 14 V ACCR (A55-13) - E1 (B50-81) B - W-B ACC relay cut signal output Engine switch ON (IG) 10 to 14 V TACH (A55-15) - E1 (B50-81) B - W-B Engine revolution start control signal output Idling Pulse generation STP (A55-36) - E1 (B50-81) W - W-B Stop light switch signal input Brake pedal depressed --> Brake pedal released 7.5 to 14 V --> Below 1.5V STAR (B50-63) - E1 (B50-81) R - W-B PNP switch signal input Engine switch ON 10 to 14 V If the result is not as specified, the ECM may have a malfunction.
4. CHECK STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) Disconnect the D14 actuator connector. Measure the resistance and voltage of the wire harness side connector. Standard TESTER CONNECTION SPECIFIED CONDITION CHART Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition B (D14-7) - Body ground B - Body ground +B power supply Always 10 to 14 V GND (D14-1) - Body ground W-B - Body ground Ground Always Below 1 ohms SGND (D14-2) - Body ground W-B - Body ground Ground Always Below 1 ohms LIN (D14-5) - Body ground R - Body ground LIN line Always 10 kohms or higher If the result is not as specified, the actuator may have a malfunction. Reconnect the D14 ECU connector. Measure the voltage of the connectors. Standard voltage TESTER CONNECTION SPECIFIED CONDITION CHART Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition IG2 (D14-6) - Body ground V - Body ground Ignition power supply Engine switch ON (IG) 10 to 14 V SLP1 (D14-4) - GND (D14-1) GR - W-B Steering lock actuator UNLOCK position signal Steering is locked --> released Below 1 V --> 10 to 14 V IGE (D14-3) - GND (D14-1) BR - W-B Power source for steering lock actuator Steering lock motor operate --> not operate Below 1 V --> 10 to 14 V

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1. DESCRIPTION Push button start system data and its Diagnostic Trouble Code (DTCs) can be read in the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use Techstream to check for malfunctions and perform repairs.
2. CHECK DLC3 The ECU uses ISO 15765-4 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format. TESTER CONNECTION SPECIFIED CONDITION CHART 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 ohms SG (5) - Body ground Signal ground Always Below 1 ohms BAT (16) - Body ground Battery positive Always 11 to 14 V CANH (6) - CANL (14) CAN bus line Ignition switch off (1) 54 to 69 ohms CANH (6) - CG (4) HIGH-level CAN bus line Ignition switch off (1) 200 ohms or higher CANL (14) - CG (4) LOW-level CAN bus line Ignition switch off (1) 200 ii or higher CANH (6) - BAT (16) HIGH-level CAN bus line Ignition switch off (1) 6 kohms or higher CANL (14) - BAT (16) LOW-level CAN bus line Ignition switch off (1) 6 kohms or higher (1) Before measuring the resistance, leave the vehicle as it is for at least 1 minute and do not operate the ignition switch, or any other switches or the doors. If the result is not as specified, DLC3 may have a malfunction. Repair or replace the harness and connector. HINT: Connect the cable of Techstream to DLC3, turn the ignition switch to the ON position 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 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 instruction manual.
3. INSPECT BATTERY VOLTAGE Inspect the battery voltage. Voltage: 11 to 14 V If voltage is below 11 V, recharge the battery before proceeding.

FAIL-SAFE CHART

1. POWER SOURCE CONTROL ECU FAIL-SAFE CHART DTC No. Item Fail-safe Function Fail-safe Deactivation Condition B2283 Vehicle speed sensor circuit Steering does not lock "Pass" condition is detected

DIAGNOSTIC TROUBLE CODE CHART