Starter Signal Circuit

2GR-FE ENGINE CONTROL: SFI SYSTEM: Starter Signal Circuit
- Starter Signal Circuit

DESCRIPTION

While the engine is being cranked, current flows from terminal ST2 of the ignition switch to the park/neutral position switch and also flows to terminal STA of the ECM (STA signal).

WIRING DIAGRAM





INSPECTION PROCEDURE

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

PROCEDURE

1. READ VALUE USING TECHSTREAM (STARTER SIGNAL)

(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 Signal.

(e) Read the value displayed on the Techstream when the ignition switch is turned ON and the engine is started.

OK:





Result





B -- CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ST RELAY - ECM)
A -- Continue to next step.

2. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY (B - L)

(a) Inspect the park/neutral position switch assembly .

Result





C -- REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY (FOR AWD) Removal

B -- REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY (FOR 2WD)
A -- Continue to next step.

3. INSPECT IGNITION OR STARTER SWITCH ASSEMBLY (AM2 - ST2)

(a) Remove the ignition or starter switch.

(b) Inspect the ignition or starter switch Testing and Inspection.

(c) Reinstall the ignition or starter switch.

NG -- REPLACE IGNITION OR STARTER SWITCH ASSEMBLY Removal
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (IGNITION SWITCH - PARK/NEUTRAL POSITION SWITCH)

(a) Disconnect the ignition switch connector.

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

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

Standard Resistance (Check for Open):





Standard Resistance (Check for Short):





(d) Reconnect the ignition switch connector.

(e) Reconnect the park/neutral position switch connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

5. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ST RELAY - ECM)

(a) Remove the ST relay from the engine room relay block.

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

(c) Disconnect the ECM connector.

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

Standard Resistance (Check for Open):





Standard Resistance (Check for Open):





(e) Reconnect the ECM connector.

(f) Reconnect the park/neutral position switch connector.

(g) Reinstall the ST relay.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

6. INSPECT BATTERY

(a) Check that the battery is not depleted.

OK:

Battery is not depleted.

NG -- REPLACE BATTERY
OK -- Continue to next step.

7. CHECK BATTERY TERMINAL

(a) Check that the battery terminal are not loose or corroded.

OK:

Battery terminals are not loose or corroded.

NG -- REPAIR OR REPLACE BATTERY TERMINAL

OK -- REPAIR OR REPLACE STARTER CIRCUIT (STARTER - ST RELAY)