Inspection Procedure

CHECK OPERATION OF ENGINE CRANKING
1. When turning the ignition switch to the START position, check if the starter motor starts.
OK: CHECK FOR INTERMITTENT PROBLEMS (See CHECK FOR INTERMITTENT PROBLEMS )

NG: Go to next step.

READ VALUE OF HAND-HELD TESTER (STA SIGNAL)

On the hand-held tester, select the item: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / STARTER SIG.

Read the values.

Standard:

STA SIGNAL

Ignition Switch Position	ON	START
STARTER SIG	OFF	ON

OK: Go to step 5

NG: Go to next step.

INSPECT ECM (STA AND STSW VOLTAGE)

Measure the voltage between the terminals of the E7 ECM connectors, while cranking the engine (ignition switch is in the START position).

Standard:

ECM (STA AND STSW VOLTAGE) (1 OF 2)

Tester Connection	Specified Condition
STA (E7-11) - E1 (E7-1)	9 to 14 V
STSW (E7-12) - E1 (E7-1)	9 to 14 V

Fig 1: Inspecting ECM (STA And STSW Voltage)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Result:

ECM (STA AND STSW VOLTAGE) (2 OF 2)

Terminal STA	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

B: REPLACE ECM (See REPLACEMENT )

C: Go to step 9

A: Go to next step.

INSPECT PARK/NEUTRAL POSITION SWITCH ASSY

Disconnect the P1 park/neutral position switch connector.

Measure the resistance between each terminal shown below when the shift lever is moved to each position.

Standard:

PARK/NEUTRAL POSITION SWITCH ASSY

Shift Potision	Tester Connection	Specified Condition
P	2 - 6, 4 - 5	Below 1 Ω
R	1 - 2	Below 1 Ω
N	2 - 9, 4 - 5	Below 1 Ω
D.4	2 - 7	Below 1 Ω
3	2 - 3	Below 1 Ω
2-L	2 - 8	Below 1 Ω

Fig 2: Inspecting Park/Neutral Position Switch Assy

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Reconnect the park/neutral position switch connector.

NG: REPLACE PARK/NEUTRAL POSITION SWITCH ASSY

OK: CHECK AND REPAIR HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ECM)

INSPECT STARTER RELAY ASSY

Remove the starter relay from the engine room R/B.

Check for continuity in the starter relay.

Standard:

STARTER RELAY ASSY

Tester Connection	Specified Condition
1 - 2	Continuity
3 - 5	No continuity
3 - 5	Continuity (Apply battery voltage to terminals 1 and 2)

Fig 3: Inspecting Starter Relay Assy

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Reinstall the starter relay.

NG: REPLACE STARTER RELAY ASSY

OK: Go to next step.

CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - STARTER RELAY, STARTER RELAY)

Check the harness and connector between the park/neutral position switch and starter relay.

Disconnect the P1 park/neutral position switch connector.
Remove the starter relay from the engine room R/B.

Check for continuity between the wire harness side connectors.

Fig 4: Identifying P1 Park/Neutral Position Switch Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard (Check for open):

PARK/NEUTRAL POSITION SWITCH AND STARTER RELAY (CHECK FOR OPEN)

Tester Connection	Specified Condition
Park/neutral position switch (P1-5) - Engine room R/B (Starter relay terminal 2)	Below 1 Ω

Standard (Check for short):

PARK/NEUTRAL POSITION SWITCH AND STARTER RELAY (CHECK FOR SHORT)

Tester Connection	Specified Condition
Park/neutral position switch (P1-5) or Engine room R/B (Starter relay terminal 2) - Body ground	10 kΩ or higher

Fig 5: Identifying Starter Relay

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Reconnect the park/neutral position switch connector.
Reinstall the starter relay.

Check the harness and connector between the starter relay and body ground.

Remove the starter relay from the engine room R/B.

Check for continuity between the starter relay and body ground.

Standard (Check for open):

STARTER RELAY AND BODY GROUND

Tester Connection	Specified Condition
Engine room R/B (Starter relay terminal 1) - Body ground	Below 1 Ω

Reinstall the starter relay.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step.

INSPECT ENGINE ROOM RELAY BLOCK (STARTER RELAY VOLTAGE)

Remove the starter relay from the engine room R/B.

Measure the voltage between the terminal of the engine room R/B and body ground.

Standard:

ENGINE ROOM RELAY BLOCK (STARTER RELAY VOLTAGE)

Tester Connection	Specified Condition
Engine room R/B (Starter relay terminal 5) - Body ground	9 to 14 V

Fig 6: Inspecting Engine Room Relay Block (Starter Relay Voltage)

Reinstall the starter relay.

NG: CHECK AND REPAIR HARNESS AND CONNECTOR (STARTER RELAY - BATTERY)

OK: Go to next step.

INSPECT STARTER ASSY (See STARTING SYSTEM (2UZ-FE) )
NG: REPAIR OR REPLACE STARTER ASSY

OK: CHECK AND REPAIR HARNESS AND CONNECTOR (STARTER RELAY - STARTER, STARTER - BATTERY)
CHECK FUSE (ST2)
1. Remove the ST2 fuse from the driver side J/B.
2. Check for continuity in the ST2 fuse.
  Standard: Continuity
3. Reinstall the ST2 fuse.
  
  Fig 7: Checking Fuse (ST2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: CHECK FOR SHORT IN ALL HARNESS AND COPONENTS CONNECTED ST2 FUSE, AND REPLACE ST2 FUSE

OK: Go to next step.

INSPECT IGNITION OR STARTER SWITCH ASSY

Disconnect the I18 ignition switch connector.

Measure the resistance between the connector terminals shown in the chart below.

Standard:

IGNITION OR STARTER SWITCH ASSY

Switch Position	Tester Connection	Specified Condition
LOCK	All Terminals	10 kΩ or higher
ACC	2-3	Below 1 Ω
ON	2-3, 2-4, 6-7	Below 1 Ω
START	1-2, 2-4, 6-7, 6-8	Below 1 Ω

Fig 8: Inspecting Ignition Or Starter Switch Assy

Reconnect the I18 ignition switch connector.

NG: REPLACE IGNITION OR STARTER SWITCH ASSY

OK: CHECK AND REPAIR HARNESS AND CONNECTOR (ECM - IGNITION SWITCH, IGNITION SWITCH - BATTERY)