Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000002EMA2
Model Year Start: 2024 Model: RAV4 Prod Date Range: [10/2023 -           ]
Title: STOP AND START: STOP AND START SYSTEM: P060629; Backup Boost Converter "A" Control CPU Signal Invalid; 2024 MY RAV4 [10/2023 -        ]

DTC

P060629

Backup Boost Converter "A" Control CPU Signal Invalid

DESCRIPTION

The engine stop and start ECU can detect open circuits when signals such as the boost, standby request or overheating signal cannot be sent to the backup boost converter control IC from the stop and start control IC in the engine stop and start ECU.

If a CPU duty malfunction is detected, the engine stop and start ECU stores DTC P060629.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

Note

P060629

Backup Boost Converter "A" Control CPU Signal Invalid

The following condition continues for 1 second or more (2 trip detection logic):

  • CPU duty malfunction is detected.
  • Wire harness or connector
  • Engine stop and start ECU

Comes on

Does not come on

SAE Code: P0606

MONITOR STRATEGY

Related DTCs

P0606: Control module processer (starter / generator control module) performance

Required Sensors/Components (Main)

Engine stop and start ECU

Required Sensors/Components (Related)

-

Frequency of Operation

Continuous

Duration

1 second

MIL Operation

2 driving cycles

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

All of the following conditions are met

-

Battery voltage

8 V or higher

Write Inhibit

permit

Time after Write status forbiddance to permit

0.5 seconds or more

Ignition switch

ON

Time after ignition switch is off to ON

0.5 seconds or more

Starter

Off

Time after starter on to off

0.5 seconds or more

Engine stop and start ECU internal back up boost converter fail (P323C)

Not detected

TYPICAL MALFUNCTION THRESHOLDS

Case 1

Back up boost converter command frequency

Less than 92.59 Hz

Case 2

The following condition is met

5 times or more

Back up boost converter command frequency

Higher than 108.7 Hz

Case 3

Either of the following conditions (a) or (b) is met

-

(a) Back up boost converter command duty cycle

24% or less

(b) Back up boost converter command duty cycle

85% or more

CONFIRMATION DRIVING PATTERN

HINT:

  • If the cable is disconnected from the battery terminal, stop and start control is prohibited until refresh charge is completed.

    In this case, let the vehicle idle to complete the refresh charge. The refresh charge is complete when the Data List item "Status of Battery Charge Control" changes from "Refresh Charge Mode". (Usually, idling the engine for 5 to 60 minutes with the battery fluid temperature at 11°C (51°F) or higher, the refresh charge will be completed.)

  • If the Techstream is not available and the Data List item "Status of Battery Charge Control" cannot be checked, charge the battery by idling the engine for approximately 5 to 60 minutes or driving the vehicle, and then drive the vehicle and check that stop and start control operates.

    If the engine is started with the hood open, the system determines that a jump start has occurred. Therefore, make sure that the hood is closed before starting the engine and driving the vehicle.

  • After the refresh charge completes, turn the ignition switch off, wait for at least 30 seconds, and then start the engine again. If the vehicle enters refresh charge mode again while the engine is idling, the initial refresh charge did not properly complete, so wait for the refresh charge to complete.
  • Allow the engine to idle for 3 minutes after it is warmed up and check that the engine idle speed is within 50 rpm of the target idle speed.
  • When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.

    Click here 2024 MY RAV4 [10/2023 -        ]; STOP AND START: STOP AND START SYSTEM: DTC CHECK / CLEAR

  • When clearing the permanent DTCs, do not disconnect the cable from the battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.

CONFIRMATION AFTER TROUBLESHOOTING

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Clear the DTCs.

Powertrain > Stop and Start > Clear DTCs

(e) Start the engine and warm it up.

(f) Drive the vehicle at 7 km/h (4 mph) or more.

CAUTION:

When performing Confirmation Driving Pattern, obey all speed limits and traffic laws.

(g) Depress the brake pedal and stop the vehicle.

(h) Keep the engine stopped by stop and start control for 1 second or more. (Keep the shift lever in D.)

(i) Release the brake pedal with the shift lever in D to start the engine.

(j) Check that DTCs are not output.

Powertrain > Stop and Start > Trouble Codes

STOP AND START SYSTEM OPERATION CHECK

Click here 2024 MY RAV4 [10/2023 -        ]; STOP AND START: STOP AND START SYSTEM: OPERATION CHECK

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Before replacing the engine stop and start ECU, read the number of starter operations and write it into a new engine stop and start ECU.

    Click here 2024 MY RAV4 [10/2023 -        ]; STOP AND START: STOP AND START SYSTEM: REGISTRATION

  • After replacing the engine stop and start ECU or air conditioning amplifier assembly, reset and perform learning of the air conditioning information in the engine stop and start ECU.

    Click here 2024 MY RAV4 [10/2023 -        ]; STOP AND START: STOP AND START SYSTEM: REGISTRATION

  • After replacing the engine stop and start ECU or airbag ECU assembly, clear and calibrate the deceleration sensor zero point in the engine stop and start ECU.

    Click here 2024 MY RAV4 [10/2023 -        ]; STOP AND START: STOP AND START SYSTEM: REGISTRATION

  • When the engine stop and start ECU or oil pump with solenoid assembly is replaced, check the oil pump with solenoid assembly.

    Click here 2024 MY RAV4 [10/2023 -        ]; STOP AND START: STOP AND START SYSTEM: REGISTRATION

  • Inspect the fuses for circuits related to this system before performing the following procedure.

HINT:

  • Using the Techstream, read the freeze frame data before troubleshooting. System condition information is recorded as freeze frame data the moment a DTC is stored. This information can be useful when troubleshooting.

    Click here 2024 MY RAV4 [10/2023 -        ]; STOP AND START: STOP AND START SYSTEM: FREEZE FRAME DATA

  • DTCs for the stop and start system are not cleared even if the malfunction has been repaired. After repairing the malfunction, be sure to clear the DTCs.

    Click here 2024 MY RAV4 [10/2023 -        ]; STOP AND START: STOP AND START SYSTEM: DTC CHECK / CLEAR

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - BATTERY)

*a

Front view of wire harness connector

(to Engine Stop and Start ECU)

(a) Disconnect the engine stop and start ECU connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

A33-1 (BIN2) - Body ground

Always

9.5 to 14 V

A33-3 (BIN1) - Body ground

Always

9.5 to 14 V

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

2.

CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - BODY GROUND)

(a) Disconnect the engine stop and start ECU connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

A33-2 (GND2) - Body ground

Always

Below 1 Ω

A33-8 (GND1) - Body ground

Always

Below 1 Ω

OK

REPLACE ENGINE STOP AND START ECU

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR