Inspection Procedure

HINT:

The following troubleshooting flowchart is based on the premise that the engine is cranked normally. If the engine will not crank, proceed to the problem symptoms table (See PROBLEM SYMPTOMS TABLE ).
Read freeze frame data using an intelligent tester or OBD II scan tool. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air/fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

When using intelligent tester:

READ VALUE OF INTELLIGENT TESTER (STARTER SIGNAL)

Connect an intelligent tester to the DLC3.
Turn the ignition switch to ON and turn the tester ON.
On the tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / STARTER SIG.

Check the value displayed on the tester when the ignition switch is turned to the ON and START positions.

DIAGNOSTIC PROCEDURE

Ignition Switch Positions	ON	START
STARTER SIG	OFF	ON

OK : REPLACE ECM

NG: Go to Next Step

INSPECT PARK / NEUTRAL POSITION SWITCH OR CLUTCH START SWITCH

Inspect the Park / Neutral Position (PNP) switch. (For A/ T models)

Disconnect the P1 PNP switch connector.

Check the resistance when the transmission gear selector lever is moved to each position.

Standard resistance

RESISTANCE SPECIFICATIONS

Gear Selector Lever Positions	Tester Connections	Specified Conditions
P	2 - 6,4 - 5	Below 1 Ω
R	1 - 2	Below 1 Ω
N	2 - 9,4 - 5	Below 1 Ω
D	2 - 7	Below 1 Ω
2	2 - 3	Below 1 Ω
L	2 - 8	Below 1 Ω

Fig 1: Identifying PNP Switch Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Reconnect the PNP switch connector.

Inspect the clutch start switch. (For M/T models)

Disconnect the C10 clutch start switch connector.

Check the resistance when the clutch start switch is ON and OFF.

Standard resistance

RESISTANCE SPECIFICATIONS

Ignition Switch Positions	Tester Connections	Specified Conditions
ON (pushed)	1 - 2	Below 1 Ω
OFF (free)	1 - 2	10 kΩ or higher

Fig 2: Inspecting Clutch Start Switch (For M/T Models)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Reconnect the clutch start switch connector.

NG: REPLACE PARK / NEUTRAL POSITION SWITCH OR CLUTCH START SWITCH (GO TO STEP 3 AFTER REPLACEMENT)

OK : Go to Next Step

READ VALUE OF INTELLIGENT TESTER (STARTER SIGNAL)

Connect the intelligent tester to the DLC3.
Turn the ignition switch to ON and turn the tester ON.
On the tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / STARTER SIG.

Check the value displayed on the tester when the ignition switch is turned to the ON and START positions.

DIAGNOSTIC PROCEDURE

Ignition Switch Positions	ON	START
STARTER SIG	OFF	ON

OK : SYSTEM IS OK

NG: Go to Next Step

INSPECT IGNITION OR STARTER SWITCH ASSEMBLY

Disconnect the I11 ignition switch connector.

Check the resistance.

Standard resistance

RESISTANCE SPECIFICATIONS

Ignition Switch Positions	Tester Connections	Specified Conditions
LOCK	All Terminals	10 kΩ or higher
ACC	1-3	Below 1 Ω
ON	1-2, 1-3, 2-3, 5-6	Below 1 Ω
START	1-2, 4-5, 4-6, 5-6	Below 1 Ω

Fig 3: Identifying Ignition Switch Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Reconnect the ignition switch connector.

NG: REPLACE IGNITION OR STARTER SWITCH ASSEMBLY (GO TO STEP 5 AFTER REPLACEMENT)

OK : Go to Next Step

READ VALUE OF INTELLIGENT TESTER (STARTER SIGNAL)

Connect the intelligent tester to the DLC3.
Turn the ignition switch to ON and turn the tester ON.
On the tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / STARTER SIG.

Check the value displayed on the tester when the ignition switch is turned to the ON and START positions.

DIAGNOSTIC PROCEDURE

Ignition Switch Positions	ON	START
STARTER SIG	OFF	ON

OK : SYSTEM IS OK

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

When Using OBD II Scan Tool:

INSPECT ECM (STA VOLTAGE)

Turn the ignition switch to ON.

Measure the voltage between the terminals of the E3 ECM connector.

Standard voltage

STANDARD VOLTAGE SPECIFICATIONS

Tester Connections	Specified Conditions
STA (E3-17) - E1 (E3-5)	0 V

Measure the voltage between the terminals of the E3 ECM connector when the engine is cranked.

Standard voltage

STANDARD VOLTAGE SPECIFICATIONS

Tester Connections	Specified Conditions
STA (E3-17) - E1 (E3-5)	5.5 V or more

Fig 4: Inspecting ECM (STA Voltage)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE ECM

OK : Go to Next Step

INSPECT PARK / NEUTRAL POSITION SWITCH OR CLUTCH START SWITCH

Inspect the Park / Neutral Position (PNP) switch. (For A/ T models)

Disconnect the P1 PNP switch connector.

Check the resistance when the transmission gear selector lever is moved to each position.

Standard resistance

RESISTANCE SPECIFICATIONS

Gear Selector Lever Positions	Tester Connections	Specified Conditions
P	2 - 6, 4 - 5	Below 1 Ω
R	1 - 2	Below 1 Ω
N	2 - 9,4 - 5	Below 1 Ω
D	2 - 7	Below 1 Ω
2	2 - 3	Below 1 Ω
L	2 - 8	Below 1 Ω

Fig 5: Identifying P1 PNP Switch Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Reconnect the PNP switch connector.

Inspect the clutch start switch. (For M/T models)

Disconnect the C10 clutch start switch connector.

Check the resistance when the clutch start switch is ON and OFF.

Standard resistance

RESISTANCE SPECIFICATIONS

Ignition Switch Positions	Tester Connections	Specified Conditions
ON (pushed)	1 - 2	Below 1 Ω
OFF (free)	1 - 2	10 kΩ or higher

Fig 6: Inspecting Clutch Start Switch (For M/T Models)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Reconnect the clutch start switch connector.

NG: REPLACE PARK / NEUTRAL POSITION SWITCH OR CLUTCH START SWITCH (GO TO STEP 3 AFTER REPLACEMENT)

OK : Go to Next Step

INSPECT ECM (STA VOLTAGE)

Turn the ignition switch to ON.

Measure the voltage between the terminals of the E3 ECM connector.

Standard voltage

STANDARD VOLTAGE SPECIFICATIONS

Tester Connections	Specified Conditions
STA (E3-17) - E1 (E3-5)	0 V

Measure the voltage between the terminals of the E3 ECM connector when the engine is cranked.

Standard voltage

STANDARD VOLTAGE SPECIFICATIONS

Tester Connections	Specified Conditions
STA (E3-17) - E1 (E3-5)	5.5 V or more

Fig 7: Inspecting ECM (STA Voltage)

OK : SYSTEM IS OK

NG: Go to Next Step

INSPECT IGNITION OR STARTER SWITCH ASSEMBLY

Disconnect the I11 ignition switch connector.

Check the resistance.

Standard resistance

RESISTANCE SPECIFICATIONS

Ignition Switch Positions	Tester Connections	Specified Conditions
LOCK	All Terminals	10 kΩ or higher
ACC	1-3	Below 1 Ω
ON	1-2, 1-3, 2-3, 5-6	Below 1 Ω
START	1-2, 4-5, 4-6, 5-6	Below 1 Ω

Fig 8: Identifying Ignition Switch Connector Terminals

Reconnect the ignition switch connector.

NG: REPLACE IGNITION OR STARTER SWITCH ASSEMBLY (GO TO STEP 5 AFTER REPLACEMENT)

OK : Go to Next Step

INSPECT ECM (STA VOLTAGE)

Turn the ignition switch to ON.

Measure the voltage between the terminals of the E3 ECM connector.

Standard voltage

STANDARD VOLTAGE SPECIFICATIONS

Tester Connections	Specified Conditions
STA (E3-17) - E1 (E3-5)	0 V

Measure the voltage between the terminals of the E3 ECM connector when the engine is cranked.

Standard voltage

STANDARD VOLTAGE SPECIFICATIONS

Tester Connections	Specified Conditions
STA (E3-17) - E1 (E3-5)	5.5 V or more

Fig 9: Inspecting ECM (STA Voltage)

OK : SYSTEM IS OK

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR