2ZR-FE 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 Smart Entry and Start System.

*2: w/ Smart Entry and Start System.

*3: for CVT Models.

*4: for M/T Models with Clutch Start System.

WIRING DIAGRAM

Refer to DTC P0617.

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>P0617

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




A

2.READ VALUE USING GTS (STARTER SIGNAL)

B

23.READ VALUE USING GTS (STARTER SIGNAL)
2.READ VALUE USING GTS (STARTER SIGNAL)
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 and ECT / Data List / All Data / Starter Signal.

Powertrain > Engine and ECT > Data List
Tester Display
Starter Signal
50003 234 118

e.

Fully depress the clutch pedal (for M/T 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 Signal)
Ignition switch ON OFF
Engine started ON



Result:
Result Proceed to
NG (for CVT Models) A
NG (for M/T Models with Clutch Start System) B
NG (for M/T Models without Clutch Start System) C
OK D



A

3.INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY

B

9.INSPECT CLUTCH START SWITCH ASSEMBLY

C

12.INSPECT IGNITION SWITCH ASSEMBLY

D

14.INSPECT ST NO. 1 RELAY
3.INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY
a.

Inspect the park/neutral position switch assembly.

Click hereDrivetrain>K313 CVT>PARK / NEUTRAL POSITION SWITCH>INSPECTION


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



A

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

B

6.INSPECT IGNITION SWITCH ASSEMBLY

C

REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY

Click hereDrivetrain>K313 CVT>PARK / NEUTRAL POSITION SWITCH>REMOVAL


4.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
E108-5 (STAR) - B14-4 (B) Always Below 1 Ω
E108-5 (STAR) - A40-23 (NSW) Always Below 1 Ω
E108-5 (STAR), B14-4 (B) or A40-23 (NSW) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

5.CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ST NO. 1 RELAY - ECM - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ST NO. 1 RELAY - ECM - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))
a.

Disconnect the park/neutral position switch assembly connector.


b.

Remove the ST NO. 1 relay from the 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
B14-9 (L) - A40-29 (STA) Always Below 1 Ω
B14-9 (L), 2 (ST NO. 1 relay), A40-29 (STA) or E108-7 (STA) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

GO TO SMART ENTRY AND START SYSTEM

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.INSPECT IGNITION SWITCH ASSEMBLY
a.

Inspect the ignition switch assembly.

Click hereEngine / Hybrid System>2ZR-FE STARTING>IGNITION SWITCH>INSPECTION


Result:
Proceed to
OK
NG



OK

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

NG

REPLACE IGNITION SWITCH ASSEMBLY

Click hereEngine / Hybrid System>2ZR-FE STARTING>IGNITION SWITCH>REMOVAL


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
E4-2 (ST2) - B14-4 (B) Always Below 1 Ω
E4-2 (ST2) - A40-23 (NSW) Always Below 1 Ω
E4-2 (ST2), B14-4 (B) or A40-23 (NSW) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

Disconnect the park/neutral position switch assembly connector.


b.

Remove the ST NO. 1 relay from the 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
B14-9 (L) - A40-29 (STA) Always Below 1 Ω
B14-9 (L), 2 (ST NO. 1 relay) or A40-29 (STA) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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 (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - CLUTCH START SWITCH ASSEMBLY)

NG

REPLACE CLUTCH START SWITCH ASSEMBLY

Click hereDrivetrain>CLUTCH>CLUTCH PEDAL SWITCH>REMOVAL


10.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - CLUTCH START SWITCH ASSEMBLY)
a.

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


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
E108-5 (STAR) - A57-2 Always Below 1 Ω
E108-5 (STAR) or A57-2 - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

11.CHECK HARNESS AND CONNECTOR (CLUTCH START SWITCH ASSEMBLY - ST NO. 1 RELAY - ECM - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

11.CHECK HARNESS AND CONNECTOR (CLUTCH START SWITCH ASSEMBLY - ST NO. 1 RELAY - ECM - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))
a.

Disconnect the clutch start switch assembly connector.


b.

Remove the ST NO. 1 relay from the 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
A57-1 - A40-29 (STA) Always Below 1 Ω
A57-1, 2 (ST NO. 1 relay), A40-29 (STA) or E108-7 (STA) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

GO TO SMART ENTRY AND START SYSTEM

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

12.INSPECT IGNITION SWITCH ASSEMBLY
a.

Inspect the ignition switch assembly.

Click hereEngine / Hybrid System>2ZR-FE STARTING>IGNITION SWITCH>INSPECTION


Result:
Proceed to
OK
NG



OK

13.CHECK HARNESS AND CONNECTOR (IGNITION SWITCH ASSEMBLY - ST NO. 1 RELAY - ECM)

NG

REPLACE IGNITION SWITCH ASSEMBLY

Click hereEngine / Hybrid System>2ZR-FE STARTING>IGNITION SWITCH>REMOVAL


13.CHECK HARNESS AND CONNECTOR (IGNITION SWITCH ASSEMBLY - ST NO. 1 RELAY - ECM)
a.

Disconnect the ignition switch assembly connector.


b.

Remove the ST NO. 1 relay from the 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
E4-2 (ST2) - A40-29 (STA) Always Below 1 Ω
E4-2 (ST2), 2 (ST NO. 1 relay) or A40-29 (STA) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

14.INSPECT ST NO. 1 RELAY
a.

Inspect the ST NO. 1 relay.

Click hereEngine / Hybrid System>2ZR-FE STARTING>RELAY>ON-VEHICLE INSPECTION


Result:
Proceed to
OK
NG



OK

15.INSPECT STARTER ASSEMBLY

NG

REPLACE ST NO. 1 RELAY

15.INSPECT STARTER ASSEMBLY
a.

Inspect the starter assembly.

Click hereEngine / Hybrid System>2ZR-FE STARTING>STARTER>INSPECTION


Result:
Proceed to
OK
NG



OK

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

NG

REPLACE STARTER ASSEMBLY

Click hereEngine / Hybrid System>2ZR-FE STARTING>STARTER>REMOVAL


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

Remove the ST NO. 1 relay from the 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) - B9-1 Always Below 1 Ω
3 (ST NO. 1 relay) or B9-1 - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

17.CHECK TERMINAL VOLTAGE (BATTERY - STARTER ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

17.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 - B5-1 Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

18.CHECK TERMINAL VOLTAGE (POWER SOURCE OF ST NO. 1 RELAY)
A312705C01
0.146,0.115 0.458,0.313 0.313,0.198 10 false *1 0.198,1.688 0.51,1.885 0.313,0.198 10 false *2
*1 Engine Room Relay Block and Junction Block Assembly
*2 ST NO. 1 Relay


a.

Remove the ST NO. 1 relay from the 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



Result:
Proceed to
OK
NG



OK

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

NG

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

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

Remove the ST NO. 1 relay from the 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



Result:
Result Proceed to
OK (for CVT Models) A
OK (for M/T Models with Clutch Start System) B
OK (for M/T Models without Clutch Start System) C
NG D



A

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

B

21.CHECK HARNESS AND CONNECTOR (ST NO. 1 RELAY - CLUTCH START SWITCH ASSEMBLY)

C

22.CHECK HARNESS AND CONNECTOR (ST NO. 1 RELAY - IGNITION SWITCH ASSEMBLY)

D

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

Remove the ST NO. 1 relay from the 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) - B14-9 (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>2ZR-FE ENGINE CONTROL>SFI SYSTEM>PROBLEM SYMPTOMS TABLE


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

21.CHECK HARNESS AND CONNECTOR (ST NO. 1 RELAY - CLUTCH START SWITCH ASSEMBLY)
a.

Remove the ST NO. 1 relay from the 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 (ST NO. 1 relay) - A57-1 Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>PROBLEM SYMPTOMS TABLE


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

22.CHECK HARNESS AND CONNECTOR (ST NO. 1 RELAY - IGNITION SWITCH ASSEMBLY)
a.

Remove the ST NO. 1 relay from the engine room relay block and junction block assembly.


b.

Disconnect the ignition 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) - E4-2 (ST2) Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>PROBLEM SYMPTOMS TABLE


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

23.READ VALUE USING GTS (STARTER SIGNAL)
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 and ECT / Data List / All Data / Starter Signal.

Powertrain > Engine and ECT > Data List
Tester Display
Starter Signal
50003 234 118

e.

Fully depress the clutch pedal (for M/T 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 Signal)
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>2ZR-FE ENGINE CONTROL>SFI SYSTEM>PROBLEM SYMPTOMS TABLE


NG

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