2NZ-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 to the park/neutral position switch assembly and to terminal STA of the ECM (STA signal).
WIRING DIAGRAM
Refer to DTC P0617.
Click hereEngine / Hybrid System>2NZ-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
Check if the engine can be cranked.
- Result:
Result Proceed to Engine cannot be cranked A Engine can be cranked B
A
B
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 - 50003 234 118
Check the value displayed on the GTS when the ignition switch is turned to the ON and START positions.
- OK:
Condition Starter Signal Ignition switch ON OFF Engine start position ON
- Result:
Result Proceed to NG (for A/T Models) A NG (for M/T Models) B OK C
A
B
C
Inspect the park/neutral position switch assembly.
Click hereDrivetrain>U441E AUTOMATIC TRANSMISSION / TRANSAXLE>PARK / NEUTRAL POSITION SWITCH>INSPECTION
- Result:
Proceed to OK NG
OK
NG
Click hereDrivetrain>U441E AUTOMATIC TRANSMISSION / TRANSAXLE>PARK / NEUTRAL POSITION SWITCH>REMOVAL
Inspect the ignition switch assembly.
Click hereEngine / Hybrid System>2NZ-FE STARTING>IGNITION SWITCH>INSPECTION
- Result:
Proceed to OK NG
OK
NG
Disconnect the ignition or starter 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 E4-2 (ST2) - B14-4 (B) Always Below 1 Ω E4-2 (ST2) - B56-52 (NSW) Always Below 1 Ω E4-2 (ST2), B14-4 (B) or B56-52 (NSW) - Body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Disconnect the park/neutral position switch assembly connector.
Remove the ST NO. 1 relay from the 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 B14-5 (L) - A56-48 (STA) Always Below 1 Ω B14-5 (L), 2 (ST NO. 1 relay) or A56-48 (STA) - Body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Inspect the ignition switch assembly.
Click hereEngine / Hybrid System>2NZ-FE STARTING>IGNITION SWITCH>INSPECTION
- Result:
Proceed to OK NG
OK
NG
Disconnect the ignition switch assembly connector.
Remove the ST NO. 1 relay from the 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 E4-2 (ST2) - A56-48 (STA) Always Below 1 Ω E4-2 (ST2), 2 (ST NO. 1 relay) or A56-48 (STA) - Body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Inspect the ST NO. 1 relay.
Click hereEngine / Hybrid System>2NZ-FE STARTING>RELAY>ON-VEHICLE INSPECTION
- Result:
Proceed to OK NG
OK
NG
Inspect the starter assembly.
Click hereEngine / Hybrid System>2NZ-FE STARTING>STARTER>INSPECTION
- Result:
Proceed to OK NG
OK
NG
Remove the ST NO. 1 relay from the 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) - B9-1 Always Below 1 Ω 3 (ST NO. 1 relay) or B9-1 - Body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Disconnect the starter assembly connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Condition Specified Condition B5-1 - Body ground Always 11 to 14 V
- Result:
Proceed to OK NG
OK
NG
| *1 | Engine Room Relay Block and Junction Block Assembly |
| *2 | ST NO. 1 Relay |
Remove the ST NO. 1 relay from the 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
OK
NG
Remove the ST NO. 1 relay from the 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:
Proceed to OK NG
OK
NG
Remove the ST NO. 1 relay from the 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) - B14-5 (L) Always Below 1 Ω
- Result:
Proceed to OK NG
OK
NG
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 - 50003 234 118
Check the value displayed on the GTS when the ignition switch is turned to the ON and START positions.
- OK:
Condition Starter Signal Ignition switch ON OFF Engine start position ON
- Result:
Proceed to OK NG
OK
NG