Page 753 of 3000
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–467
ES
(a) Disconnect the F24 fuel pump resistor connector.
(b) Remove the FUEL PUMP relay from the engine room
junction block.
(c) Measure the resistance according to the value(s) in the
table below.
Standard resistance:
Check for open
Check for short
(d) Reconnect the fuel pump resistor connector.
(e) Reinstall the FUEL PUMP relay.
NG
OK
15CHECK HARNESS AND CONNECTOR (FUEL PUMP RELAY - FUEL PUMP RESISTOR)
A163163E02
Tester Connection Specified Condition
FUEL PUMP relay terminal (4) - F24-2 Below 1
FUEL PUMP relay terminal (5) - F24-1 Below 1
Tester Connection Specified Condition
FUEL PUMP relay terminal (4) or F24-2 - Body
ground10 k
or higher
FUEL PUMP relay terminal (5) or F24-1 - Body
ground10 k
or higher
REPAIR OR REPLACE HARNESS OR
CONNECTOR (FUEL PUMP RELAY - FUEL
PUMP RESISTOR)
Page 754 of 3000
ES–4682GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
(a) Disconnect the F24 fuel pump resistor connector.
(b) Disconnect the F20 fuel pump connector.
(c) Measure the resistance according to the value(s) in the
table below.
Standard resistance:
Check for open
Check for short
(d) Reconnect the fuel pump resistor connector.
(e) Reconnect the fuel pump connector.
NG
OK
16CHECK HARNESS AND CONNECTOR (FUEL PUMP RESISTOR - FUEL PUMP)
A137393E04
Tester Connection Specified Condition
F24-2 - F20-4 Below 1
Tester Connection Specified Condition
F24-2 or F20-4 - Body ground 10 k
or higher
REPAIR OR REPLACE HARNESS OR
CONNECTOR (FUEL PUMP RESISTOR -
FUEL PUMP)
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See page
ES-27)
Page 755 of 3000
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–469
ES
DESCRIPTION
The system detects the ignition switch's starting signal (STSW) and then supplies current to the starter
until the ECM judges that the engine has started successfully. The purpose is to reduce the holding time
of the ignition key.
WIRING DIAGRAM
Refer to DTC P0617 (See page ES-320).
INSPECTION PROCEDURE
(a) When starting the engine, check whether the starter
motor starts.
OK:
Engine is cranking.
Cranking Holding Function Circuit
1CHECK CRANKING
A166695E01
Page 756 of 3000
ES–4702GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
OK
NG
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch to the ON position.
(c) Turn the tester on.
(d) Select the following menu items: DIAGNOSIS /
ENHANCED OBDII / DATA LIST / ALL / STARTER SIG.
(e) Check the result when the ignition switch is turned ON
and when the engine is started.
OK
OK
NG
(a) Measure the voltage between the terminals of the ECM
connector and body ground while cranking the engine.
Standard voltage
Result
B
C
ACHECK FOR INTERMITTENT PROBLEMS
2READ VALUE OF INTELLIGENT TESTER (STA SIGNAL)
Display (STARTER SIG) Condition
OFF Ignition switch ON
ON Engine start
Go to step 6
3CHECK ECM (STAR AND STSW VOLTAGE)
A162489E16
Tester Connection Specified Condition
STAR (E10-8) - Body ground 9 to 14 V
STSW (E11-12) - Body ground 9 to 14 V
Terminal STAR Terminal STSW Proceed to
9 to 14 V 9 to 14 V A
0 V 9 to 14 V B
0 V 0 V C
REPLACE ECM
Go to step 13
Page 757 of 3000

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–471
ES
(a) Inspect the Park/Neutral Position (PNP) switch.
(1) Disconnect the P1 PNP switch connector.
(2) Measure the resistance according to the value(s) in
the table below.
Standard resistance
(3) Reconnect the PNP switch connector.
NG
OK
(a) Disconnect the I15 ignition switch connector.
(b) Disconnect the P1 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
4INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY
A093221E20
Shift Position Tester Connection Specified Condition
P 2 - 6, 4 - 5 Below 1
R 1 - 2 Below 1
N 2 - 9, 4 - 5 Below 1
D 2 - 7 Below 1
2 2 - 3 Below 1
L 2 - 8 Below 1
REPLACE PARK/NEUTRAL POSITION
SWITCH ASSEMBLY
5CHECK HARNESS AND CONNECTOR (IGNITION SWITCH - PARK/NEUTRAL POSITION
SWITCH)
A166711E01
Tester Connection Specified Condition
ST2 (I15-4) - P1-4 Below 1
Tester Connection Specified Condition
ST2 (I15-4) or P1-4 - Body ground 10 k
or higher
REPAIR OR REPLACE HARNESS OR
CONNECTOR (IGNITION SWITCH - PARK/
NEUTRAL POSITION SWITCH)
Page 758 of 3000

ES–4722GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
OK
(a) Remove the ST relay from the No. 3 relay block.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance
(c) Reinstall the ST relay to the No. 3 relay block.
NG
OK
(a) Disconnect the P1 park/neutral position switch
connector.
(b) Remove the ST relay from the No. 3 relay block.
(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 park/neutral position switch connector.
(e) Reinstall the ST relay to the No. 3 relay block.
NG REPAIR OR REPLACE HARNESS OR CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ECM)
6INSPECT ST RELAY
B016200
Tester Connection Specified Condition
3 - 5 10 k
or higher
3 - 5Below 1
(Apply battery voltage between
terminals 1 and 2)
REPLACE ST RELAY
7CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ST RELAY)
A166712E01
Tester Connection Specified Condition
P1-5 - ST relay terminal (1) Below 1
Tester Connection Specified Condition
P1-5 or ST relay terminal (1) - Body
ground10 k
or higher
REPAIR OR REPLACE HARNESS OR
CONNECTOR (PARK/NEUTRAL POSITION
SWITCH - ST RELAY)
Page 759 of 3000
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–473
ES
OK
(a) Remove the ST relay from the No. 3 relay block.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance
(c) Reinstall the ST relay to the No. 3 relay block.
NG
OK
(a) Remove the ST relay from the No. 3 relay block.
(b) Measure the voltage according to the value(s) in the
table below.
Standard voltage
(c) Reinstall the ST relay to the No. 3 relay block.
OK
NG
8CHECK HARNESS AND CONNECTOR (ST RELAY - BODY GROUND)
A166709E01
Tester Connection Specified Condition
ST relay terminal (2) - Body ground Below 1
REPAIR OR REPLACE HARNESS OR
CONNECTOR (ST RELAY - BODY GROUND)
9CHECK ST RELAY (POWER SOURCE)
A166709E01
Tester Connection Specified Condition
ST relay terminal (5) - Body ground 9 to 14 V
Go to step 11
Page 760 of 3000
ES–4742GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
(a) Remove the fusible link block from the engine room
junction block.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance
(c) Reinstall the fusible link block to the engine room
junction block.
NG
OK
(a) Inspect the starter assembly (See page ST-7).
NG
OK
10INSPECT FUSIBLE LINK
A166720E02
Tester Connection Specified Condition
Fusible link Below 1
REPLACE FUSIBLE LINK
REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - STARTER RELAY)
11INSPECT STARTER ASSEMBLY
REPLACE STARTER ASSEMBLY