Toyota Avalon (XX50): Dtc Check / Clear. Freeze Frame Data. How To Proceed With Troubleshooting

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Engine / Hybrid / Battery Control / Motor Generator Control System / Dtc Check / Clear. Freeze Frame Data. How To Proceed With Troubleshooting

Dtc Check / Clear

DTC CHECK / CLEAR

CHECK FOR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Motor Generator / Trouble Codes.

Powertrain > Motor Generator > Trouble Codes

(e) Check the DTCs and freeze frame data, and then write them down.

(f) Check the details of the DTCs.

Display Item

Description

Test Failed

Shows the malfunction judgment results during the current trip.

Pending

Shows the malfunction judgment results up to now (Indicates the possibility of a malfunction when no DTC is confirmed.)

Confirmed

Shows the DTCs confirmed up to now (The number of current trips differs for each DTC.)

  • A pending DTC is a DTC that is stored in the motor generator control ECU during the 1st trip when 2 trip detection logic is used.
  • Freeze frame data is stored for each of the latest result DTCs, pending DTCs and confirmed DTCs.

CHECK FREEZE FRAME DATA

(a) If a DTC is present, select it in order to display its freeze frame data.

(b) Read the freeze frame data recorded when the DTC was stored.

CHECK TIME STAMP

HINT:

By checking Time Stamp, the time and order in which DTCs were stored in an ECU can be checked.

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Enter the following menus: Health Check.

(d) Perform the following steps when the data setting screen is displayed.

(e) Select the systems for which to perform Health Check and check for time stamp data.

Selectable items:
  • Powertrain
  • Chassis
  • Body
  • Store All Data

(f) Select "Yes" when "Do you want to store time stamp data?" is displayed.

HINT:

If "Yes" is not selected, time stamp data will not be stored.

(g) After Health Check has completed, select "Time Stamp Data" to display the Time Stamp screen.

(h) Select the desired system from the drop-down list on the bottom of the Time Stamp screen.

(i) Check the order and time which DTCs were stored for the selected system.

CHECK FOR DTC (SYSTEMS EXCEPT MOTOR GENERATOR CONTROL ECU)

HINT:

The motor generator control ECU maintains communication with other ECUs, such as the hybrid vehicle control ECU, ECM and skid control ECU assembly. Therefore, if the motor generator control ECU outputs a DTC, it is necessary to check for and make a note of any DTCs stored for other systems.

(a) If DTCs are present, check the relevant systems.

HINT:

If DTCs for the CAN communication system are present in addition to other DTCs, first troubleshoot and repair in the CAN communication system malfunctions.

CLEAR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Motor Generator / Trouble Codes.

(e) Clear the DTCs and freeze frame data.

Powertrain > Motor Generator > Clear DTCs

NOTICE:

Clearing the DTCs will also clear the freeze frame data, diagnosis related information.

CLEAR PERMANENT DTC

OUTLINE
  • After clearing current DTCs using the Techstream (or by disconnecting the cable from the negative (-) auxiliary battery terminal), permanent DTCs can be cleared when the universal trip is performed and then the system is determined to be normal for the relevant DTCs. The driving pattern to obtain a normal judgment is described under the "Confirmation Driving Pattern" for the respective DTC.
  • To clear permanent DTCs, all of the following conditions must be are met:
    • There is a history that universal trip driving was performed.
    • The vehicle has been judged as normal for 2 trips. (Normal judgment does not have to be performed in 2 consecutive trip, but normal judgment should occur in the latest trip.)
    • No malfunctions are detected.

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Motor Generator / Trouble Codes.

Powertrain > Motor Generator > Trouble Codes

HINT:

If "YES" is displayed for the value of "PERMANENT" at the top right of the Techstream screen, permanent DTCs are stored.

(e) Select the "Generic" tab.

(f) Check if permanent DTCs are stored.

HINT:

If permanent DTCs are not output, it is not necessary to continue this procedure.

(g) Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

Powertrain > Motor Generator > Clear DTCs

NOTICE:

Do not clear the DTCs or disconnect the cable from the auxiliary battery terminal after performing this step.

(h) Perform the universal trip.

CAUTION:

When performing the driving pattern, obey all speed limits and traffic laws.

HINT:

The universal trip driving pattern and normal judgment procedure can be performed consecutively in the same driving cycle.

(1) Turn the power switch on (READY) and wait for 30 seconds or more.

(2) Drive the vehicle at 40 km/h (25 mph) or more for a total of 5 minutes or more.

HINT:

It is possible to complete the drive pattern even if the vehicle decelerates to less than 40 km/h (25 mph) during the driving cycle provided that the vehicle is driven at 40 km/h (25 mph) or more for a total of 5 minutes.

(3) Allow 10 minutes or more to elapse from the time the power switch turned on (READY).

(i) Turn the power switch off and wait for 2 minutes or more.

(j) Perform the normal judgment procedure in the respective confirmation driving pattern of each output DTC.

HINT:

Do not turn the power switch off by mistake during this step.

(k) With power switch on (READY) and wait for 5 seconds or more.

(l) Turn the power switch off and wait for 2 minutes or more.

(m) Turn the power switch on (IG).

(n) Enter the following menus: Powertrain / Motor Generator / Trouble Codes.

Powertrain > Motor Generator > Trouble Codes

(o) Check that the permanent DTCs have been cleared.

HINT:

If permanent DTCs are not output, it is not necessary to continue this procedure.

(p) Perform the normal judgment procedure in the respective confirmation driving pattern of each output DTC.

HINT:

Do not turn the power switch off by mistake during this step.

(q) With power switch on (READY) and wait for 5 seconds or more.

(r) Turn the power switch off and wait for 2 minutes or more.

(s) Turn the power switch on (IG).

(t) Enter the following menus: Powertrain / Motor Generator / Trouble Codes.

Powertrain > Motor Generator > Trouble Codes

(u) Check that the permanent DTCs have been cleared.

HINT:

Permanent DTCs will be cleared if a normal judgment is obtained during 3 consecutive driving cycles with the MIL illuminated.

Freeze Frame Data

FREEZE FRAME DATA

FREEZE FRAME DATA

HINT:

The motor generator control ECU records vehicle and driving condition information as freeze frame data the moment a DTC is stored. It can be used for estimating or duplicating the vehicle conditions that were present when the malfunction occurred.

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

(e) Select a DTC in order to display its freeze frame data.

(f) Check the freeze frame data recorded with the DTC.

Powertrain > Motor Generator

Tester Display

Measurement Item

Range

Diagnostic Note

Calculate Load

Calculate load (value increases in proportion to increase in load)

Min.: 0.0%, Max.: 100.0%

-

Coolant Temperature

Engine coolant temperature

Min.: -40°C (-40°F), Max.: 215°C (419°F)

Cold or warmed-up engine

Engine Speed

Engine speed

Min.: 0 rpm, Max.: 16383 rpm

-

Vehicle Speed

Vehicle speed

Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph)

Stopped, or driving (at low, medium, or high speeds)

Intake Air Temperature

Intake air temperature

Min.: -40°C (-40°F), Max.: 140°C (284°F)

-

Throttle Position Sensor No.1 Voltage %

Throttle position sensor

Min.: 0.0%, Max.: 100.0%

-

Engine Run Time

Elapsed time after starting engine

Min.: 0 sec, Max.: 65535 sec

After the power switch is turned on (READY), elapsed time from initial engine start until the power switch is turned off.

MIL ON Run Distance

Drive distance from MIL on

Min.: 0 km (0 mile), Max.: 65535 km (40723 mile)

-

Warmup Cycle Cleared DTC

Warmup cycles after DTCs cleared

Min.: 0, Max.: 255

-

Distance from DTC Cleared

Distance driven after DTCs cleared

Min.: 0 km (0 mile), Max.: 65535 km (40723 mile)

-

Battery Voltage

Auxiliary battery voltage

Min.: 0.00 V, Max.: 16.00 V

Auxiliary battery and DC/DC converter condition

Ambient Temperature

Ambient air temperature

Min.: -40°C (-40°F), Max.: 215°C (419°F)

-

Running Time from MIL ON

Running time from MIL on

Min.: 0 min, Max.: 65535 min

-

Time after DTC Cleared

Time after DTCs cleared

Min.: 0 min, Max.: 65535 min

-

Shift SW Status (N,P Range)

Shift lever position sensor

ON or OFF

-

Hybrid/EV Battery System Voltage

HV battery voltage

Min.: 0.00 V, Max.: 1023.98 V

-

Hybrid/EV Battery System Current

HV battery current

Min.: -3276.8 A, Max.: 3276.7 A

HV battery charge/discharge status

  • Amount of current during discharge is displayed with positive values
  • Amount of current during charge is displayed with negative values

Boosting Converter Temperature(Upper)

Boost converter temperature (Upper)

Min.: 8°C (46.4°F), Max.: 150°C (302°F)

-

Boosting Converter Temperature 1(Lower)

Boost converter temperature 1 (Lower)

Min.: 8°C (46.4°F), Max.: 150°C (302°F)

-

Boosting Converter Temperature 2(Lower)

Boost converter temperature 2 (Lower)

Min.: 8°C (46.4°F), Max.: 150°C (302°F)

-

Motor Inverter Temperature

Motor inverter temperature

Min.: 8°C (46.4°F), Max.: 150°C (302°F)

-

Motor U Current(Lower Resolution)

Motor U current (Lower resolution)

Min.: -3276.8 A, Max.: 3276.7 A

-

Motor V Current(Lower Resolution)

Motor V current (Lower resolution)

Min.: -3276.8 A, Max.: 3276.7 A

-

Motor W Current(Lower Resolution)

Motor W current (Lower resolution)

Min.: -3276.8 A, Max.: 3276.7 A

-

Generator U Current(Lower Resolution)

Generator U current (Lower resolution)

Min.: -3276.8 A, Max.: 3276.7 A

-

Generator V Current(Lower Resolution)

Generator V current (Lower resolution)

Min.: -3276.8 A, Max.: 3276.7 A

-

Generator W Current(Lower Resolution)

Generator W current (Lower resolution)

Min.: -3276.8 A, Max.: 3276.7 A

-

Motor ECU Power Supply (For 31V)

Motor generator control ECU power supply (for 31V)

Min.: 0.00 V, Max.: 4.98 V

-

Motor ECU Power Supply (For AD0)

Motor generator control ECU power supply (for AD0)

Min.: 0.00 V, Max.: 4.98 V

-

Motor ECU Power Supply (For 2.5V)

Motor generator control ECU power supply (for 2.5V)

Min.: 0.00 V, Max.: 4.98 V

-

Motor ECU Power Supply (For 2.5V Sub)

Motor generator control ECU power supply (for 2.5V sub)

Min.: 0.00 V, Max.: 4.98 V

-

DC/DC Converter Operation State

DC/DC converter operation state

Min.: 0.00 V, Max.: 4.98 V

-

DC/DC Converter Output Signal

DC/DC converter output signal

Min.: 0.00 V, Max.: 4.98 V

-

DC/DC Converter Output Signal Duty

DC/DC converter output signal duty

Min.: 0.0 %, Max.: 100.0 %

-

Motor Revolution

Motor (MG2) speed (detected by resolver sensor)

Min.: -32768 rpm, Max.: 32767 rpm

Motor (MG2) speed

  • Forward rotation appears as "+"
  • Backward rotation appears as "-"

Motor Torque

Motor (MG2) torque value

Min.: -4096.000 Nm, Max.: 4095.875 Nm

When motor (MG2) rotates in "+" direction:

  • Torque appears as "+" while motor (MG2) discharges
  • Torque appears as "-" while motor (MG2) charges

When motor (MG2) rotates in "-" direction:

  • Torque appears as "-" while motor (MG2) discharges
  • Torque appears as "+" while motor (MG2) charges

Motor Control Mode

Motor control mode

Min.: 0, Max.: 65535

-

Motor Carrier Frequency

Motor carrier frequency

0.75 kHz, 1.25 kHz, 2.5 kHz, 3.75 kHz, 5 kHz, 10 kHz

-

Motor Inverter Shut Down Signal

Motor inverter shutdown signal

Min.: 0, Max.: 255

-

Generator Revolution

Generator (MG1) speed (detected by resolver sensor)

Min.: -32768 rpm, Max.: 32767 rpm

Generator (MG1) speed

  • Forward rotation appears as "+"
  • Backward rotation appears as "-"

Generator Torque

Generator (MG1) torque value

Min.: -4096.000 Nm, Max.: 4095.875 Nm

When generator (MG1) rotates in "+" direction:

  • Torque appears as "+" while generator (MG1) discharges
  • Torque appears as "-" while generator (MG1) charges

When generator (MG1) rotates in "-" direction:

  • Torque appears as "-" while generator (MG1) discharges
  • Torque appears as "+" while generator (MG1) charges

Generator Control Mode

Generator control mode

Min.: 0, Max.: 65535

-

Generator Carrier Frequency

Generator carrier frequency

0.75 kHz, 1.25 kHz, 2.5 kHz, 3.75 kHz, 5 kHz, 10 kHz

-

Generator Inverter Shut Down Signal

Generator (MG1) inverter shutdown signal

Min.: 0, Max.: 255

-

Inverter Coolant Temperature

Coolant (for inverter) temperature

Min.: -40°C (-40°F), Max.: 215°C (419°F)

-

Inverter Input Current

Inverter input current

Min.: -3276.8 A, Max.: 3276.7 A

-

Inverter Water Pump Duty

Inverter water pump motor driver request duty

Min.: 0 %, Max.: 100 %

-

Inverter Water Pump Revolution

Inverter water pump assembly speed

Min.: 0 rpm, Max.: 15000 rpm

-

Collinear Graphic Engine Revolution

Col-linear graphic engine revolution

Min.: 0 rpm, Max.: 65535 rpm

-

Motor Resolver After Offset

Motor resolver offset value

Min.: 0.000 deg, Max.: 358.593 deg

-

Motor Resolver Offset Value

Motor Resolver Offset Value

Min.: -250.000 deg, Max.: 249.992 deg

-

Generator Resolver After Offset

Generator resolver offset value

Min.: 0.000 deg, Max.: 358.593 deg

-

Generator Resolver Offset Value

Generator resolver offset value

Min.: -250.000 deg, Max.: 249.992 deg

-

VL Voltage

High voltage before it is boosted

Min.: 0.0 V, Max.: 6553.5 V

-

VH Voltage

High voltage after it is boosted

Min.: 0.0 V, Max.: 6553.5 V

-

Boosting Converter PWM Duty

Boost converter PWM duty

Min.: 0 %, Max.: 100 %

-

Boosting Converter Control Mode

Boost converter control mode

Min.: 0, Max.: 255

-

Boosting Converter Carrier Frequency

Boost converter signal carrier frequency

9.55 kHz, 9.13 kHz, 8.71 kHz, 8.29 kHz, 7.87 kHz, 7.45 kHz, 4.8 kHz

-

Boosting Converter Shut Down Signal

Boost converter shutdown signal

Min.: 0, Max.: 255

-

Generate Request Torque

Generator (MG1) torque request value

Min.: -4096.000 Nm, Max.: 4095.875 Nm

-

Shift Position

Shift position

P/R/N/D

-

Motor Temperature

Motor (MG2) temperature

Min.: -40°C (-40°F), Max.: 215°C (419°F)

-

Generator Temperature

Generator (MG1) temperature

Min.: -40°C (-40°F), Max.: 215°C (419°F)

-

Short Wave Highest Value

Waveform voltage in abnormal insulation detection circuit in battery voltage sensor

Min.: 0.00 V, Max.: 4.98 V

-

Fail Safe Mode

Fail safe mode

Min.: -128, Max.: 127

-

Accelerator Position

Accelerator pedal opening angle

Min.: 0 %, Max.: 100.0 %

-

WIN Control Limit Power

Charge control wattage sent from battery voltage sensor to hybrid vehicle control ECU

Min.: -327.68 kW, Max.: 327.67 kW

-

WOUT Control Limit Power

Discharge control wattage sent from battery voltage sensor to hybrid vehicle control ECU

Min.: -327.68 kW, Max.: 327.67 kW

-

Engine Control Mode

Engine control mode

Stop, Stop Process, Startup Process, Running

-

Emergency Shutdown Signal

Inverter emergency shutdown

ON or OFF

-

Ready ON Status

State of system (READY)

ON or OFF

-

SMR Status

SMR status

ON or OFF

-

Generator Resolver Offset Complete Status

Generator resolver learning complete status

ON or OFF

-

Generator Inverter High Current(GFINV)

Generator (MG1) inverter high current

ON or OFF

-

Generator Inverter Shut Down Status

Generator (MG1) inverter shutdown status

ON or OFF

-

Motor Resolver Offset Complete Status

Motor resolver learning complete status

ON or OFF

-

PTC Heater Activate Permission Status/Prohibition Signal(IDH)

PTC heater

ON or OFF

-

DC/DC Converter Terminate Signal

DC/DC converter stop request signal

ON or OFF

-

Motor Inverter High Current(MFINV)

Motor inverter high current

ON or OFF

-

Motor Inverter Shut Down Status

Motor inverter shutdown

ON or OFF

-

Inverter Input High Voltage(OVH)

Inverter input high voltage

ON or OFF

-

Boosting Converter Input High Voltage(OVL)

Boost converter input high voltage

ON or OFF

-

Boosting Converter Input High Current(CFINV)

Boost converter input high current

ON or OFF

-

Boosting Converter Shut Down Status

Boost converter shutdown

ON or OFF

-

Total Distance Traveled

Drive total distance

Min.: 0 km (0 mile), Max.: 16777215 km (10425361 mile)

-

Total Distance Traveled - Unit

Drive total distance unit

km or mile

-

How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • *: Use the Techstream
  • Use the following procedure to troubleshoot the motor generator control system.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP

NEXT

2.

CUSTOMER PROBLEM ANALYSIS

NEXT

3.

CONNECT TECHSTREAM TO THE DLC3*

HINT:

If the Techstream indicates a communication error, inspect the DLC3.

NEXT

4.

CHECK DTC AND FREEZE FRAME DATA*

Click here

HINT:

Make sure to save freeze frame data because the data is necessary for performing simulation tests.

NEXT

5.

CLEAR DTC AND FREEZE FRAME DATA*

Click here

NEXT

6.

CONDUCT VISUAL INSPECTION

NEXT

7.

CONFIRM PROBLEM SYMPTOMS

HINT:

If the hybrid vehicle control system does not start, perform steps 9 and 11 first.

Malfunction occurs.

GO TO STEP 10

Malfunction does not occur.

8.

DUPLICATE CONDITIONS THAT PRODUCE SYMPTOMS

NEXT

9.

CHECK FOR DTCS*

Click here

DTCs are not output.

GO TO STEP 16

DTCs are output.

10.

REFER TO DTC CHART

NEXT

11.

CONDUCT CIRCUIT INSPECTION

Malfunction confirmed.

GO TO STEP 13

Malfunction not confirmed.

12.

CHECK FOR INTERMITTENT PROBLEMS

Click here

NEXT

13.

IDENTIFY PROBLEM

NEXT

14.

ADJUST AND/OR REPAIR

NEXT

15.

CONDUCT CONFIRMATION TEST

NEXT

END

16.

CONDUCT BASIC INSPECTION

Malfunctioning parts confirmed.

GO TO STEP 18

Malfunctioning parts not confirmed.

17.

CHECK ECU POWER SOURCE CIRCUIT

NEXT

GO TO STEP 11

18.

CONDUCT PARTS INSPECTION

NEXT

GO TO STEP 13

Diagnostic Trouble Code Chart

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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual

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