SFI SYSTEM(except K111, K111F) Starter Signal Circuit
DTC Code | DTC Name |
---|---|
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 and to terminal STA of the ECM (STA signal).
*1: w/o Entry and Start System
*2: w/ Entry and Start System
WIRING DIAGRAM
Refer to DTC P0617.
CAUTION / NOTICE / HINT
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
CHECK WHETHER ENGINE CAN BE CRANKED
Check if the engine can be cranked.
Result
Result
Proceed to
Engine cannot be cranked
A
Engine can be cranked
B
B READ VALUE USING GTS (STARTER SIGNAL)Click here
READ VALUE USING GTS (STARTER SIGNAL)
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Starter Signal.
Powertrain > Engine and ECT > Data List
Tester Display
Starter Signal
Check the value displayed on the GTS when the ignition switch is turned to the ON and START positions.
OK
Switch Position
Starter Signal
ON
OFF
START
ON
Result
Result
Proceed to
NG (for CVT Models)
A
NG (for Manual Transaxle Models)
B
OK
C
INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY
Inspect the park/neutral position switch assembly.
for 2WD
for 4WD/AWD
Result
Result
Proceed to
OK (w/ Entry and Start System)
A
OK (w/o Entry and Start System)
B
NG (for 2WD)
C
NG (for 4WD/AWD)
D
B INSPECT IGNITION SWITCH ASSEMBLYClick here
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ECM)
Disconnect the certification ECU (smart key ECU assembly) connector.
Disconnect the park/neutral position switch assembly connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection
Condition
Specified Condition
G82-5 (STAR) - B36-4 (B)
Always
Below 1 Ω
G82-5 (STAR) - B93-63 (NSW)
Always
Below 1 Ω
G82-5 (STAR), B36-4 (B) or B93-63 (NSW) - Body ground
Always
10 kΩ or higher
Result
Proceed to
OK
NG
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ST NO. 1 RELAY - ECM - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))
Disconnect the park/neutral position switch assembly connector.
Remove the ST NO. 1 relay from the No. 2 engine room relay block and junction block assembly.
Disconnect the ECM connector.
Disconnect the certification ECU (smart key ECU assembly) connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection
Condition
Specified Condition
B36-9 (L) - A62-22 (STA)
Always
Below 1 Ω
B36-9 (L), 2 (ST NO. 1 relay), A62-22 (STA) or G82-7 (STA) - Body ground
Always
10 kΩ or higher
Result
Proceed to
OK
NG
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
INSPECT IGNITION SWITCH ASSEMBLY
Inspect the ignition switch assembly.
Result
Proceed to
OK
NG
CHECK HARNESS AND CONNECTOR (IGNITION SWITCH ASSEMBLY - PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ECM)
Disconnect the ignition switch assembly connector.
Disconnect the park/neutral position switch assembly connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection
Condition
Specified Condition
G4-2 (ST2) - B36-4 (B)
Always
Below 1 Ω
G4-2 (ST2) - B93-63 (NSW)
Always
Below 1 Ω
G4-2 (ST2), B36-4 (B) or B93-63 (NSW) - Body ground
Always
10 kΩ or higher
Result
Proceed to
OK
NG
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ST N O. 1 RELAY - ECM)
Disconnect the park/neutral position switch assembly connector.
Remove the ST NO. 1 relay from the No. 2 engine room relay block and junction block assembly.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection
Condition
Specified Condition
B36-9 (L) - A62-22 (STA)
Always
Below 1 Ω
B36-9 (L), 2 (ST NO. 1 relay) or A62-22 (STA) - Body ground
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
INSPECT CLUTCH START SWITCH ASSEMBLY
Inspect the clutch start switch assembly.
Result
Result
Proceed to
OK (w/ Entry and Start System)
A
OK (w/o Entry and Start System)
B
NG
C
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - CLUTCH START SWITCH ASSEMBLY)
Disconnect the certification ECU (smart key ECU assembly) connector.
Disconnect the clutch start switch assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Table 1. for LHD Tester Connection
Condition
Specified Condition
G82-5 (STAR) - A4-2
Always
Below 1 Ω
G82-5 (STAR) or A4-2 - Body ground
Always
10 kΩ or higher
Table 2. for RHD Tester Connection
Condition
Specified Condition
G82-5 (STAR) - F2-2
Always
Below 1 Ω
G82-5 (STAR) or F2-2 - Body ground
Always
10 kΩ or higher
Result
Proceed to
OK
NG
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
CHECK HARNESS AND CONNECTOR (CLUTCH START SWITCH ASSEMBLY - ST NO. 1 RELAY - ECM - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))
Disconnect the clutch start switch assembly connector.
Remove the ST NO. 1 relay from the No. 2 engine room relay block and junction block assembly.
Disconnect the ECM connector.
Disconnect the certification ECU (smart key ECU assembly) connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Table 3. for LHD Tester Connection
Condition
Specified Condition
A4-1 - A62-22 (STA)
Always
Below 1 Ω
A4-1, 2 (ST NO. 1 relay), A62-22 (STA) or G82-7 (STA) - Body ground
Always
10 kΩ or higher
Table 4. for RHD Tester Connection
Condition
Specified Condition
F2-1 - A62-22 (STA)
Always
Below 1 Ω
F2-1, 2 (ST NO. 1 relay), A62-22 (STA) or G82-7 (STA) - Body ground
Always
10 kΩ or higher
Result
Proceed to
OK
NG
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
INSPECT IGNITION SWITCH ASSEMBLY
Inspect the ignition switch assembly.
Result
Proceed to
OK
NG
CHECK HARNESS AND CONNECTOR (IGNITION SWITCH ASSEMBLY - CLUTCH START SWITCH ASSEMBLY)
Disconnect the ignition switch assembly connector.
Disconnect the clutch start switch assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Table 5. for LHD Tester Connection
Condition
Specified Condition
G4-2 (ST2) - A4-2
Always
Below 1 Ω
G4-2 (ST2) or A4-2 - Body ground
Always
10 kΩ or higher
Table 6. for RHD Tester Connection
Condition
Specified Condition
G4-2 (ST2) - F2-2
Always
Below 1 Ω
G4-2 (ST2) or F2-2 - Body ground
Always
10 kΩ or higher
Result
Proceed to
OK
NG
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
CHECK HARNESS AND CONNECTOR (CLUTCH START SWITCH ASSEMBLY - ST NO. 1 RELAY - ECM)
Disconnect the clutch start switch assembly connector.
Remove the ST NO. 1 relay from the No. 2 engine room relay block and junction block assembly.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Table 7. for LHD Tester Connection
Condition
Specified Condition
A4-1 - A62-22 (STA)
Always
Below 1 Ω
A4-1, 2 (ST NO. 1 relay) or A62-22 (STA) - Body ground
Always
10 kΩ or higher
Table 8. for RHD Tester Connection
Condition
Specified Condition
F2-1 - A62-22 (STA)
Always
Below 1 Ω
F2-1, 2 (ST NO. 1 relay) or A62-22 (STA) - Body ground
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
INSPECT ST NO. 1 RELAY
Inspect the ST NO. 1 relay.
Result
Proceed to
OK
NG
NG REPLACE ST NO. 1 RELAY
INSPECT STARTER ASSEMBLY
Inspect the starter assembly.
for 1.0 kW type
for 1.3 kW type
Result
Result
Proceed to
OK
A
NG (for 1.0 kW type)
B
NG (for 1.3 kW type)
C
CHECK HARNESS AND CONNECTOR (ST NO. 1 RELAY - STARTER ASSEMBLY)
Remove the ST NO. 1 relay from the No. 2 engine room relay block and junction block assembly.
Disconnect the starter assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection
Condition
Specified Condition
3 (ST NO. 1 relay) - B6-1
Always
Below 1 Ω
3 (ST NO. 1 relay) or B6-1 - Body ground
Always
10 kΩ or higher
Result
Proceed to
OK
NG
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
CHECK TERMINAL VOLTAGE (POWER SOURCE OF STARTER ASSEMBLY)
Disconnect the starter assembly connector.
Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection
Condition
Specified Condition
C6-1 - Body ground
Always
11 to 14 V
Result
Proceed to
OK
NG
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
CHECK TERMINAL VOLTAGE (POWER SOURCE OF ST NO. 1 RELAY)
-
*1
No. 2 Engine Room Relay Block and Junction Block Assembly
*2
ST NO. 1 Relay
Remove the ST NO. 1 relay from the No. 2 engine room relay block and junction block assembly.
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
NG REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - ST RELAY)
-
CHECK HARNESS AND CONNECTOR (ST NO. 1 RELAY - BODY GROUND)
Remove the ST NO. 1 relay from the No. 2 engine room relay block and junction block assembly.
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 Manual Transaxle Models)
B
NG
C
B CHECK HARNESS AND CONNECTOR (ST NO. 1 RELAY - CLUTCH START SWITCH ASSEMBLY)Click here
C REPAIR OR REPLACE HARNESS OR CONNECTOR
CHECK HARNESS AND CONNECTOR (ST NO. 1 RELAY - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)
Remove the ST NO. 1 relay from the No. 2 engine room relay block and junction block assembly.
Disconnect the park/neutral position switch assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection
Condition
Specified Condition
2 (ST NO. 1 relay) - B36-9 (L)
Always
Below 1 Ω
2 (ST NO. 1 relay) or B36-9 (L) - Body ground
Always
10 kΩ or higher
Result
Proceed to
OK
NG
OK PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
CHECK HARNESS AND CONNECTOR (ST NO. 1 RELAY - CLUTCH START SWITCH ASSEMBLY)
Remove the ST NO. 1 relay from the No. 2 engine room relay block and junction block assembly.
Disconnect the clutch start switch assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Table 9. for LHD Tester Connection
Condition
Specified Condition
2 (ST NO. 1 relay) - A4-1
Always
Below 1 Ω
2 (ST NO. 1 relay) or A4-1 - Body ground
Always
10 kΩ or higher
Table 10. for RHD Tester Connection
Condition
Specified Condition
2 (ST NO. 1 relay) - F2-1
Always
Below 1 Ω
2 (ST NO. 1 relay) or F2-1 - Body ground
Always
10 kΩ or higher
Result
Proceed to
OK
NG
OK PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
READ VALUE USING GTS (STARTER SIGNAL)
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Starter Signal.
Powertrain > Engine and ECT > Data List
Tester Display
Starter Signal
Check the value displayed on the GTS when the ignition switch is turned to the ON and START positions.
OK
Switch Position
Starter Signal
ON
OFF
START
ON
Result
Proceed to
OK
NG
NG REPAIR OR REPLACE HARNESS OR CONNECTOR (ST RELAY - ECM)