Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001FMS6
Model Year Start: 2019 Model: RAV4 Prod Date Range: [11/2018 - 08/2020]
Title: A25A-FKS (ENGINE CONTROL): SFI SYSTEM (w/o Canister Pump Module): Starter Signal Circuit; 2019 - 2020 MY RAV4 [11/2018 - 08/2020]

Starter Signal Circuit

DESCRIPTION

While the engine is being cranked, current flows from terminal ST1 of the ignition switch assembly*1 or terminal STAR of the certification ECU (smart key ECU assembly)*2 to the park/neutral position switch assembly and to terminal STA of the ECM (STA signal).

*1: w/o Smart Key System

*2: w/ Smart Key System

WIRING DIAGRAM

Refer to DTC P061512.

Click here 2019 - 2020 MY RAV4 [11/2018 - 08/2020]; A25A-FKS (ENGINE CONTROL): SFI SYSTEM (w/o Canister Pump Module): P061512; Starter Relay Circuit Short to Battery+

CAUTION / NOTICE / HINT

NOTICE:

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

PROCEDURE

1.

CHECK WHETHER ENGINE CAN BE CRANKED

(a) Check if the engine can be cranked.

Result

Proceed to

Engine cannot be cranked

A

Engine can be cranked

B
B

GO TO STEP 16

A

2.

READ VALUE USING TECHSTREAM (STARTER SW)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine / Data List / Starter SW.

Powertrain > Engine > Data List

Tester Display

Starter SW

(e) Check the value displayed on the Techstream when the ignition switch is turned to the ON and START positions.

OK:

Condition

Techstream Display (Starter SW)

Ignition switch ON

OFF

Engine started

ON
NG

GO TO STEP 10

OK

3.

INSPECT ST NO. 1 RELAY

(a) Inspect the ST NO. 1 relay.

Click here 2019 - 2021 MY RAV4 [11/2018 - 12/2021]; A25A-FKS (STARTING): RELAY: INSPECTION

NG

REPLACE ST NO. 1 RELAY
OK

4.

INSPECT STARTER ASSEMBLY

(a) Inspect the starter assembly.

Click here 2019 MY RAV4 [11/2018 - 10/2019]; A25A-FKS (STARTING): STARTER (w/o Stop And Start System): INSPECTION 2020 - 2024 MY RAV4 [10/2019 -        ]; A25A-FKS (STARTING): STARTER (w/o Stop And Start System): INSPECTION

NG

REPLACE STARTER ASSEMBLY 2019 MY RAV4 [11/2018 - 02/2019]; A25A-FKS (STARTING): STARTER (w/o Stop And Start System): REMOVAL 2019 MY RAV4 [02/2019 - 10/2019]; A25A-FKS (STARTING): STARTER (w/o Stop And Start System): REMOVAL 2020 MY RAV4 [10/2019 - 08/2020]; A25A-FKS (STARTING): STARTER (w/o Stop And Start System): REMOVAL

OK

5.

CHECK HARNESS AND CONNECTOR (ST NO. 1 RELAY - STARTER ASSEMBLY)

(a) Remove the ST NO. 1 relay from No. 1 engine room relay block and junction block assembly.

(b) Disconnect the starter assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 (ST NO. 1 relay) - C42-1 (ST)

Always

Below 1 Ω

3 (ST NO. 1 relay) or C42-1 (ST) - Body ground and other terminals

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

6.

CHECK TERMINAL VOLTAGE (BATTERY - STARTER ASSEMBLY)

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the cable from the positive (+) battery terminal.

(c) Disconnect the starter assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Positive (+) battery terminal - D2-1 (B)

Always

Below 1 Ω
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

7.

CHECK TERMINAL VOLTAGE (POWER SOURCE OF ST NO. 1 RELAY)

*1

No. 1 Engine Room Relay Block and Junction Block Assembly

*2

ST NO. 1 Relay

(a) Remove the ST NO. 1 relay from No. 1 engine room relay block and junction block assembly

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

5 (ST NO. 1 relay) - Body ground

Always

11 to 14 V
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - ST NO. 1 RELAY)
OK

8.

CHECK HARNESS AND CONNECTOR (ST NO. 1 RELAY - BODY GROUND)

(a) Remove the ST NO. 1 relay from No. 1 engine room relay block and junction block assembly.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

1 (ST NO. 1 relay) - Body ground

Always

Below 1 Ω
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

9.

CHECK HARNESS AND CONNECTOR (ST NO. 1 RELAY - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)

(a) Remove the ST NO. 1 relay from the No. 1 engine room relay block and junction block assembly.

(b) Disconnect the park/neutral position switch assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

2 (ST NO. 1 relay) - C31-9 (L)

Always

Below 1 Ω
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

10.

INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY

(a) Inspect the park/neutral position switch.

  • for 2WD:

    Click here 2019 - 2024 MY RAV4 [11/2018 -        ]; UB80E (AUTOMATIC TRANSMISSION / TRANSAXLE): PARK / NEUTRAL POSITION SWITCH: INSPECTION

  • for AWD:

    Click here 2019 - 2024 MY RAV4 [11/2018 -        ]; UB80F (AUTOMATIC TRANSMISSION / TRANSAXLE): PARK / NEUTRAL POSITION SWITCH: INSPECTION

Result

Proceed to

OK (w/ Smart Key System)

A

OK (w/o Smart Key System)

B

NG

C
B

GO TO STEP 13

C

REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY

  • for 2WD:

    Click here 2019 MY RAV4 [11/2018 - 10/2019]; UB80E (AUTOMATIC TRANSMISSION / TRANSAXLE): PARK / NEUTRAL POSITION SWITCH: REMOVAL 2020 MY RAV4 [10/2019 - 08/2020]; UB80E (AUTOMATIC TRANSMISSION / TRANSAXLE): PARK / NEUTRAL POSITION SWITCH: REMOVAL

  • for AWD:

    Click here 2019 MY RAV4 [11/2018 - 10/2019]; UB80F (AUTOMATIC TRANSMISSION / TRANSAXLE): PARK / NEUTRAL POSITION SWITCH: REMOVAL 2020 MY RAV4 [10/2019 - 08/2020]; UB80F (AUTOMATIC TRANSMISSION / TRANSAXLE): PARK / NEUTRAL POSITION SWITCH: REMOVAL

A

11.

CHECK HARNESS AND CONNECTOR (STA SIGNAL CIRCUIT)

(a) Disconnect the park/neutral position switch assembly connector.

(b) Remove the ST NO. 1 relay from No. 1 engine room relay block and junction block assembly.

(c) Disconnect the ECM connector.

(d) Disconnect the certification ECU (smart key ECU assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A15-20 (STA) - 2 (ST NO. 1 relay)

Always

Below 1 Ω

C31-9 (L) - 2 (ST NO. 1 relay)

Always

Below 1 Ω

A24-30 (STA) - 2 (ST NO. 1 relay)

Always

Below 1 Ω

A15-20 (STA), 2 (ST NO. 1 relay), C31-9 (L) or A24-30 (STA) - Body ground and other terminals

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

12.

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ECM)

(a) Disconnect the certification ECU (smart key ECU assembly) connector.

(b) Disconnect the park/neutral position switch assembly connector.

(c) Disconnect the ECM connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A15-9 (STAR) - C31-4 (B)

Always

Below 1 Ω

A15-9 (STAR) - A24-23 (NSW)

Always

Below 1 Ω

A15-9 (STAR), C31-4 (B) or A24-23 (NSW) - Body ground and other terminals

Always

10 kΩ or higher
OK

GO TO SMART KEY SYSTEM

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

13.

CHECK HARNESS AND CONNECTOR (STA SIGNAL CIRCUIT)

(a) Disconnect the park/neutral position switch assembly connector.

(b) Remove the ST NO. 1 relay from No. 1 engine room relay block and junction block assembly.

(c) Disconnect the ECM connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

C31-9 (L) - 2 (ST NO. 1 relay)

Always

Below 1 Ω

A24-30 (STA) - 2 (ST NO. 1 relay)

Always

Below 1 Ω

C31-9 (L), 2 (ST NO. 1 relay) or A24-30 (STA) - Body ground and other terminals

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

14.

CHECK HARNESS AND CONNECTOR (IGNITION SWITCH ASSEMBLY - PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ECM)

(a) Disconnect the ignition switch assembly connector.

(b) Disconnect the park/neutral position switch assembly connector.

(c) Disconnect the ECM connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

G28-5 (ST1) - C31-4 (B)

Always

Below 1 Ω

G28-5 (ST1) - A24-23 (NSW)

Always

Below 1 Ω

G28-5 (ST1), C31-4 (B) or A24-23 (NSW) - Body ground and other terminals

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

15.

INSPECT IGNITION SWITCH ASSEMBLY

(a) Inspect the ignition switch assembly.

Click here 2019 - 2024 MY RAV4 [11/2018 -        ]; A25A-FKS (STARTING): IGNITION SWITCH: INSPECTION

OK

REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - IGNITION SWITCH ASSEMBLY)
NG

REPLACE IGNITION SWITCH ASSEMBLY

16.

READ VALUE USING TECHSTREAM (STARTER SW)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine / Data List / Starter SW.

Powertrain > Engine > Data List

Tester Display

Starter SW

(e) Check the value displayed on the Techstream when the ignition switch is turned to the ON and START positions.

OK:

Condition

Techstream Display (Starter SW)

Ignition switch ON

OFF

Engine started

ON
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (ST NO. 1 RELAY - ECM)