Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001EEKR
Model Year Start: 2019 Model: RAV4 Prod Date Range: [11/2018 - 10/2022]
Title: STOP AND START: STOP AND START SYSTEM: Stop and Start Priority Control System; 2019 - 2022 MY RAV4 [11/2018 - 10/2022]

Stop and Start Priority Control System

DESCRIPTION

In stop and start control status, there is normal status (Standard) and stop and start priority status (Extended).

Stop and start control status can be switched to the desired mode by pressing and holding the stop and start system cancel switch (eco run cancel switch assembly), or by operating the steering pad switch assembly, and the mode change is also shown on the multi-information display screen.

When the mode has been switched by pressing and holding the stop and start system cancel switch (eco run cancel switch assembly), a signal is sent directly from the stop and start system cancel switch (eco run cancel switch assembly) to the engine stop and start ECU.

When the steering pad switch assembly is used to select a control mode, a status change request signal is sent from the combination meter assembly to the engine stop and start ECU via CAN communication.

Cooperative control is performed by the air conditioning amplifier assembly and engine stop and start ECU based on the selected control mode.

When stop and start priority control (Extended) is selected, the operation time of stop and start control will be extended in order to improve fuel economy.

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 2019 MY RAV4 [11/2018 - 10/2019]; STOP AND START: STOP AND START SYSTEM: REGISTRATION 2020 - 2021 MY RAV4 [10/2019 - 12/2021]; STOP AND START: STOP AND START SYSTEM: REGISTRATION 2022 MY RAV4 [12/2021 - 10/2022]; 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 2019 MY RAV4 [11/2018 - 10/2019]; STOP AND START: STOP AND START SYSTEM: REGISTRATION 2020 - 2021 MY RAV4 [10/2019 - 12/2021]; STOP AND START: STOP AND START SYSTEM: REGISTRATION 2022 MY RAV4 [12/2021 - 10/2022]; 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 2019 MY RAV4 [11/2018 - 10/2019]; STOP AND START: STOP AND START SYSTEM: REGISTRATION 2020 - 2021 MY RAV4 [10/2019 - 12/2021]; STOP AND START: STOP AND START SYSTEM: REGISTRATION 2022 MY RAV4 [12/2021 - 10/2022]; 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 2019 MY RAV4 [11/2018 - 10/2019]; STOP AND START: STOP AND START SYSTEM: REGISTRATION 2020 - 2021 MY RAV4 [10/2019 - 12/2021]; STOP AND START: STOP AND START SYSTEM: REGISTRATION 2022 MY RAV4 [12/2021 - 10/2022]; STOP AND START: STOP AND START SYSTEM: REGISTRATION

HINT:

  • When stop and start priority control (Extended) is selected, the operation of the air conditioning system is limited. If the customer reports that the cooling effectiveness of the air conditioning system is poor, check the selected control mode. If stop and start priority control (Extended) is selected, cancel the control mode and check if the cooling effectiveness of the air conditioning system improves. If it improves, explain to the customer that the operation of the air conditioning system was limited by stop and start control.
  • Depending on the vehicle conditions, the stop and start operation time may not change even if stop and start priority control (Extended) is selected.

PROCEDURE

1.

CHECK PROBLEM SYMPTOMS

(a) Check the problem symptoms.

HINT:

  • Check each symptom by checking the suspected areas in the table below.
  • By using the Techstream and entering the following menus, the selected mode can be confirmed.

    Powertrain / Stop and Start / Data List / Stop & Start A/C Mode

Problem Symptoms

Trouble Area

Proceed to

Multi-information display screen does not change after pressing steering pad switch assembly
  • Steering pad switch assembly
  • Spiral cable sub-assembly
  • Combination meter assembly
  • Engine stop and start ECU
  • Wire harness or connector (steering pad switch assembly - combination meter assembly, radio and display receiver assembly)
  • CAN communication system

A

When the stop and start system cancel switch (eco run cancel switch assembly) is pressed and held, the status change interrupt display in the combination meter assembly is not displayed, and control does not change
  • Stop and start system cancel switch (eco run cancel switch assembly)
  • Engine stop and start ECU
  • Wire harness or connector (stop and start system cancel switch (eco run cancel switch assembly) - engine stop and start ECU)

B

Even though the stop and start system cancel switch (eco run cancel switch assembly) and steering pad switch assembly are operated, the multi-information display screen does not change, and control does not change
  • Engine stop and start ECU
  • CAN communication system

C

Multi-information display screen changes without pressing steering pad switch assembly
  • Steering pad switch assembly
  • Spiral cable sub-assembly
  • Wire harness or connector (steering pad switch assembly - combination meter assembly)

D

The status change interrupt display in the combination meter assembly is not displayed, but control changes

Combination meter assembly

E

The status change interrupt display in the combination meter assembly is displayed, but control does not change
  • Air conditioning amplifier assembly
  • CAN communication system

F

Control mode returns to default mode after turning ignition switch to ON

Engine stop and start ECU

G
B

GO TO STOP AND START CANCEL SWITCH CIRCUIT

C

GO TO STEP 3

D

GO TO STEP 4

E

GO TO METER / GAUGE SYSTEM

F

GO TO STEP 7

G

GO TO STEP 8

A

2.

CHECK OPERATION

(a) Using the steering pad switch assembly, check that all functions other than "Stop & Start Settings" can be selected.

Result

Proceed to

Only "Stop & Start Settings" cannot be selected

A

No function can be selected using the steering pad switch assembly

B
A

GO TO STEP 3

B

GO TO STEP 4

3.

CHECK DTC OUTPUT

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Perform a road test.

(e) Enter the following menus: Powertrain / Stop and Start / Trouble Codes.

(f) Read the DTCs.

Powertrain > Stop and Start > Trouble Codes

Result

Proceed to

DTCs are not output

A

CAN DTCs are output

B
A

REPLACE ENGINE STOP AND START ECU 2019 MY RAV4 [11/2018 - 10/2019]; STOP AND START: ENGINE STOP AND START ECU: REMOVAL 2020 MY RAV4 [10/2019 - 08/2020]; STOP AND START: ENGINE STOP AND START ECU: REMOVAL 2021 - 2022 MY RAV4 [08/2020 - 10/2022]; STOP AND START: ENGINE STOP AND START ECU: REMOVAL

B

GO TO CAN COMMUNICATION SYSTEM

4.

CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - COMBINATION METER ASSEMBLY)

(a) Disconnect the spiral cable sub-assembly connector.

(b) Disconnect the combination meter assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

G20-10 (+DP2) - G18-15 (MSTI)

Always

Below 1 Ω

G20-11 (+DP) - G18-32 (MSM+)

Always

Below 1 Ω

G20-4 (EAU) - Body ground

Always

Below 1 Ω

G20-10 (+DP2) or G18-15 (MSTI) - Body ground and other terminals

Always

10 kΩ or higher

G20-11 (+DP) or G18-32 (MSM+) - Body ground and other terminals

Always

10 kΩ or higher

G20-4 (EAU) - Other terminals

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

5.

INSPECT SPIRAL CABLE SUB-ASSEMBLY

(a) Inspect the spiral cable sub-assembly.

Click here 2019 - 2020 MY RAV4 RAV4 HV [11/2018 - 08/2020]; SUPPLEMENTAL RESTRAINT SYSTEMS: SPIRAL CABLE: INSPECTION 2021 - 2024 MY RAV4 RAV4 HV [08/2020 -        ]; SUPPLEMENTAL RESTRAINT SYSTEMS: SPIRAL CABLE: INSPECTION

NG

REPLACE SPIRAL CABLE SUB-ASSEMBLY 2019 MY RAV4 RAV4 HV [11/2018 - 02/2019]; SUPPLEMENTAL RESTRAINT SYSTEMS: SPIRAL CABLE: REMOVAL 2019 MY RAV4 RAV4 HV [02/2019 - 10/2019]; SUPPLEMENTAL RESTRAINT SYSTEMS: SPIRAL CABLE: REMOVAL 2020 MY RAV4 RAV4 HV [10/2019 - 08/2020]; SUPPLEMENTAL RESTRAINT SYSTEMS: SPIRAL CABLE: REMOVAL 2021 MY RAV4 RAV4 HV [08/2020 - 12/2021]; SUPPLEMENTAL RESTRAINT SYSTEMS: SPIRAL CABLE: REMOVAL 2022 MY RAV4 RAV4 HV [12/2021 - 10/2022]; SUPPLEMENTAL RESTRAINT SYSTEMS: SPIRAL CABLE: REMOVAL

OK

6.

INSPECT STEERING PAD SWITCH ASSEMBLY

(a) Inspect the steering pad switch assembly.

Click here 2019 - 2020 MY RAV4 RAV4 HV [11/2018 - 08/2020]; STEERING COLUMN: STEERING PAD SWITCH: INSPECTION 2021 - 2024 MY RAV4 RAV4 HV [08/2020 -        ]; STEERING COLUMN: STEERING PAD SWITCH: INSPECTION

OK

GO TO METER / GAUGE SYSTEM

NG

REPLACE STEERING PAD SWITCH ASSEMBLY 2019 MY RAV4 RAV4 HV [11/2018 - 02/2019]; STEERING COLUMN: STEERING PAD SWITCH: REMOVAL 2019 MY RAV4 RAV4 HV [02/2019 - 10/2019]; STEERING COLUMN: STEERING PAD SWITCH: REMOVAL 2020 MY RAV4 RAV4 HV [10/2019 - 08/2020]; STEERING COLUMN: STEERING PAD SWITCH: REMOVAL 2021 MY RAV4 RAV4 HV [08/2020 - 12/2021]; STEERING COLUMN: STEERING PAD SWITCH: REMOVAL 2022 MY RAV4 RAV4 HV [12/2021 - 10/2022]; STEERING COLUMN: STEERING PAD SWITCH: REMOVAL

7.

CHECK DTC OUTPUT

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Perform a road test.

(e) Enter the following menus: Powertrain / Stop and Start / Trouble Codes.

(f) Read the DTCs.

Powertrain > Stop and Start > Trouble Codes

Result

Proceed to

DTCs are not output

A

CAN DTCs are output

B
A

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

B

GO TO CAN COMMUNICATION SYSTEM

8.

CHECK DTC OUTPUT

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Perform a road test.

(e) Enter the following menus: Powertrain / Stop and Start / Trouble Codes.

(f) Read the DTCs.

Powertrain > Stop and Start > Trouble Codes

Result

Proceed to

DTCs are not output

A

DTCs are output

B
A

REPLACE ENGINE STOP AND START ECU 2019 MY RAV4 [11/2018 - 10/2019]; STOP AND START: ENGINE STOP AND START ECU: REMOVAL 2020 MY RAV4 [10/2019 - 08/2020]; STOP AND START: ENGINE STOP AND START ECU: REMOVAL 2021 - 2022 MY RAV4 [08/2020 - 10/2022]; STOP AND START: ENGINE STOP AND START ECU: REMOVAL

B

GO TO DIAGNOSTIC TROUBLE CODE CHART 2019 MY RAV4 [11/2018 - 10/2019]; STOP AND START: STOP AND START SYSTEM: DIAGNOSTIC TROUBLE CODE CHART 2020 MY RAV4 [10/2019 - 08/2020]; STOP AND START: STOP AND START SYSTEM: DIAGNOSTIC TROUBLE CODE CHART 2021 MY RAV4 [08/2020 - 12/2021]; STOP AND START: STOP AND START SYSTEM: DIAGNOSTIC TROUBLE CODE CHART 2022 MY RAV4 [12/2021 - 10/2022]; STOP AND START: STOP AND START SYSTEM: DIAGNOSTIC TROUBLE CODE CHART