RM35X0E _51 Engine / Hybrid System _078720 7GR-FKS ENGINE CONTROL _0381907 SFI SYSTEM J

7GR-FKS ENGINE CONTROL  SFI SYSTEM  Starter Signal Circuit  


DESCRIPTION

While the engine is being cranked, current flows from terminal ST2 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*3 or clutch start switch assembly*4 and to terminal STA of the ECM (STA signal).

*1: w/o Entry and Start System

*2: w/ Entry and Start System

*3: for Automatic Transmission Models

*4: for Manual Transmission Models

CAUTION / NOTICE / HINT

NOTICE:
·

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

·

After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) battery terminal.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>BEFORE DISCONNECTING BATTERY

·

When disconnecting and reconnecting the battery.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>WORK PROCEDURE

HINT:

When disconnecting and reconnecting the battery, there is an automatic learning function that completes learning when the respective system is used.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>AUTOMATIC LEARNING CHART




PROCEDURE

1.CHECK WHETHER ENGINE CAN BE CRANKED
a.

Check if the engine can be cranked.

Result:
Result Proceed to
Engine cannot be cranked A
Engine can be cranked B




A

2.READ VALUE USING GTS (STARTER SW)

B

20.READ VALUE USING GTS (STARTER SW)
2.READ VALUE USING GTS (STARTER SW)
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

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

Powertrain > Engine > Data List
Tester Display
Starter SW
50003 372 11

e.

Fully depress the clutch pedal (for Manual Transmission Models with Clutch Start System).


f.

Check the value displayed on the GTS when the ignition switch is turned to the ON and START positions.

OK:
Condition GTS Display (Starter SW)
Ignition switch ON OFF
Engine started ON



Result:
Result Proceed to
NG (for Automatic Transmission Models) A
NG (for Manual Transmission Models) B
OK C



A

3.INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY

B

9.INSPECT CLUTCH START SWITCH ASSEMBLY

C

12.INSPECT STARTER RELAY
3.INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY
a.

Inspect the park/neutral position switch.

Click hereDrivetrain>AC60E (AUTOMATIC TRANSMISSION / TRANSAXLE)>PARK / NEUTRAL POSITION SWITCH>INSPECTION


Result:
Result Proceed to
OK (w/ Entry and Start System) A
OK (w/o Entry and Start System) B
NG C



A

4.CHECK HARNESS AND CONNECTOR (STA SIGNAL CIRCUIT)

B

6.CHECK HARNESS AND CONNECTOR (STA SIGNAL CIRCUIT)

C

REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY

Click hereDrivetrain>AC60E (AUTOMATIC TRANSMISSION / TRANSAXLE)>PARK / NEUTRAL POSITION SWITCH>REMOVAL


4.CHECK HARNESS AND CONNECTOR (STA SIGNAL CIRCUIT)
a.

Disconnect the park/neutral position switch assembly connector.


b.

Remove the STARTER 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
E92-5 (L) - 2 (STARTER relay) Always Below 1 Ω
N1-12 (STA) - 2 (STARTER relay) Always Below 1 Ω
E92-5 (L), 2 (STARTER relay), N1-12 (STA) or N154-20 (STA) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.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
N154-9 (STAR) - E92-4 (B) Always Below 1 Ω
N154-9 (STAR) - N1-13 (NSW) Always Below 1 Ω
N154-9 (STAR), E92-4 (B) or N1-13 (NSW) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

GO TO ENTRY AND START SYSTEM

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>ENTRY AND START SYSTEM (for Start Function)>HOW TO PROCEED WITH TROUBLESHOOTING


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.CHECK HARNESS AND CONNECTOR (STA SIGNAL CIRCUIT)
a.

Disconnect the park/neutral position switch assembly connector.


b.

Remove the STARTER 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
E92-5 (L) - 2 (STARTER relay) Always Below 1 Ω
N1-12 (STA) - 2 (STARTER relay) Always Below 1 Ω
E92-5 (L), 2 (STARTER relay) or N1-12 (STA) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.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
N28-4 (ST2) - E92-4 (B) Always Below 1 Ω
N28-4 (ST2) - N1-13 (NSW) Always Below 1 Ω
N28-4 (ST2), E92-4 (B) or N1-13 (NSW) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

8.INSPECT IGNITION SWITCH ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.INSPECT IGNITION SWITCH ASSEMBLY
a.

Inspect the ignition switch assembly.

Click hereEngine / Hybrid System>7GR-FKS (STARTING)>IGNITION SWITCH>INSPECTION


Result:
Proceed to
OK
NG



OK

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

NG

REPLACE IGNITION SWITCH ASSEMBLY

Click hereEngine / Hybrid System>7GR-FKS (STARTING)>IGNITION SWITCH>REMOVAL


9.INSPECT CLUTCH START SWITCH ASSEMBLY
a.

Inspect the clutch start switch assembly.

Click hereDrivetrain>CLUTCH>CLUTCH PEDAL SWITCH>INSPECTION


Result:
Proceed to
OK
NG



OK

10.CHECK HARNESS AND CONNECTOR (STA SIGNAL CIRCUIT)

NG

REPLACE CLUTCH START SWITCH ASSEMBLY

Click hereDrivetrain>CLUTCH>CLUTCH PEDAL SWITCH>REMOVAL


10.CHECK HARNESS AND CONNECTOR (STA SIGNAL CIRCUIT)
a.

Disconnect the clutch start switch assembly connector.


b.

Remove the STARTER 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
M7-2 (L) - 2 (STARTER relay) Always Below 1 Ω
N1-12 (STA) - 2 (STARTER relay) Always Below 1 Ω
A15-20 (STA), 2 (STARTER relay), M7-2 (L) or N1-12 (STA) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

11.CHECK HARNESS AND CONNECTOR (IGNITION SWITCH ASSEMBLY - CLUTCH START SWITCH ASSEMBLY - ECM)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

11.CHECK HARNESS AND CONNECTOR (IGNITION SWITCH ASSEMBLY - CLUTCH START SWITCH ASSEMBLY - ECM)
a.

Disconnect the ignition switch assembly connector.


b.

Disconnect the clutch start 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
N28-4 (ST2) - M7-1 (B) Always Below 1 Ω
N28-4 (ST2) - N1-13 (NSW) Always Below 1 Ω
N28-4 (ST2), M7-1 (B) or N1-13 (NSW) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

8.INSPECT IGNITION SWITCH ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

13.INSPECT STARTER ASSEMBLY
a.

Inspect the starter assembly.

Click hereEngine / Hybrid System>7GR-FKS (STARTING)>STARTER>INSPECTION


Result:
Proceed to
OK
NG



OK

14.CHECK HARNESS AND CONNECTOR (STARTER RELAY - STARTER ASSEMBLY)

NG

REPLACE STARTER ASSEMBLY

Click hereEngine / Hybrid System>7GR-FKS (STARTING)>STARTER>REMOVAL


14.CHECK HARNESS AND CONNECTOR (STARTER RELAY - STARTER ASSEMBLY)
a.

Remove the STARTER 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 (STARTER relay) - F5-1 (ST) Always Below 1 Ω
3 (STARTER relay) or F5-1 (ST) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

15.CHECK TERMINAL VOLTAGE (BATTERY - STARTER ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

15.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 - F2-1 (B) Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

16.CHECK TERMINAL VOLTAGE (POWER SOURCE OF STARTER RELAY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

16.CHECK TERMINAL VOLTAGE (POWER SOURCE OF STARTER RELAY)
A440806C01
0.229,0.229 0.542,0.427 0.313,0.198 10 false *1 1.927,0.188 2.24,0.385 0.313,0.198 10 false *2
*1 No. 1 Engine Room Relay Block and Junction Block Assembly
*2 STARTER Relay


a.

Remove the STARTER 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 (STARTER relay) - Body ground Always 11 to 14 V



Result:
Proceed to
OK
NG



OK

17.CHECK HARNESS AND CONNECTOR (STARTER RELAY - BODY GROUND)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - STARTER RELAY)

17.CHECK HARNESS AND CONNECTOR (STARTER RELAY - BODY GROUND)
a.

Remove the STARTER 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 (STARTER relay) - Body ground Always Below 1 Ω



Result:
Result Proceed to
OK (for Automatic Transmission Models) A
OK (for Manual Transmission Models) B
NG C



A

18.CHECK HARNESS AND CONNECTOR (STARTER RELAY - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)

B

19.CHECK HARNESS AND CONNECTOR (STARTER RELAY - CLUTCH START SWITCH ASSEMBLY)

C

REPAIR OR REPLACE HARNESS OR CONNECTOR

18.CHECK HARNESS AND CONNECTOR (STARTER RELAY - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)
a.

Remove the STARTER 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 (STARTER relay) - E92-5 (L) Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Click hereEngine / Hybrid System>7GR-FKS (ENGINE CONTROL)>SFI SYSTEM>PROBLEM SYMPTOMS TABLE


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

19.CHECK HARNESS AND CONNECTOR (STARTER RELAY - CLUTCH START SWITCH ASSEMBLY)
a.

Remove the STARTER relay from the No. 1 engine room relay block and junction block assembly.


b.

Disconnect the clutch start switch assembly connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
2 (STARTER relay) - M7-2 (L) Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Click hereEngine / Hybrid System>7GR-FKS (ENGINE CONTROL)>SFI SYSTEM>PROBLEM SYMPTOMS TABLE


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

20.READ VALUE USING GTS (STARTER SW)
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

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

Powertrain > Engine > Data List
Tester Display
Starter SW
50003 372 11

e.

Fully depress the clutch pedal (for Manual Transmission Models with Clutch Start System).


f.

Check the value displayed on the GTS when the ignition switch is turned to the ON and START positions.

OK:
Condition GTS Display (Starter SW)
Ignition switch ON OFF
Engine started ON



Result:
Proceed to
OK
NG



OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Click hereEngine / Hybrid System>7GR-FKS (ENGINE CONTROL)>SFI SYSTEM>PROBLEM SYMPTOMS TABLE


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (STARTER RELAY - ECM)