Inspection Procedure

HINT:

Read freeze frame data using the intelligent tester or the OBD II scan tool. The ECM (Included in HV control ECU) 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.

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P3190, P3191 AND/OR P3193)

Connect the intelligent tester to the DLC3.
Turn the ignition switch to the ON position.
Turn the intelligent tester or the OBD II scan tool ON.
On the intelligent tester, select the items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
Read the DTCs using the intelligent tester or the OBD II scan tool.

Result

RESULT REFERENCE

Display (DTC output)	Proceed to
P3190, P3191 and/or P3193	A
P3190, P3191 and/or P3193, and other DTCs	B

HINT:

If any codes other than P3190, P3191 and/or P3193 are output, perform troubleshooting for those DTCs first.

B: GO TO DTC CHART

A: Go to next step

CHECK SHORTAGE OF FUEL
NG: REFILL FUEL

OK: Go to next step
CHECK AIR INDUCTION SYSTEM
OK: The air induction system has no leakage and blockages.

NG: REPAIR OR REPLACE AIR INDUCTION SYSTEM

OK: Go to next step
CHECK FOR UNUSUAL NOISE OR VIBRATION WHEN STARTING ENGINE OR REVVING UP
OK: Unusual noise and vibration do not occur.

NG: REPAIR OR REPLACE MALFUNCTIONING PART

OK: Go to next step
CHECK FUEL PRESSURE
1. Check the fuel pressure (See ON-VEHICLE INSPECTION ).
  Standard:
  
  304 to 343 kPa (3.1 to 3.5 kgf/cm ² , 44.1 to 49.7 psi)
NG: CHECK AND REPLACE FUEL SYSTEM

OK: Go to next step

INSPECT MASS AIR FLOW METER ASSEMBLY

Connect the intelligent tester to the DLC3.
Turn the ignition switch and tester ON.
Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / MAF.
Standard:

0.54 g/s or less

Inspect resistance.

Measure the resistance between the terminals of the mass airflow meter.

Standard resistance

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Specified Condition
THA (4) - E2 (5)	13.6 to 18.4 kΩ at -20°C (-4°F)
THA (4) - E2 (5)	2.21 to 2.69 kΩ at 20°C (68°F)
THA (4) - E2 (5)	0.49 to 0.67 kΩ at 60°C (140°F)

Reinstall the mass air flow meter.

NG: REPLACE MASS AIR FLOW METER ASSEMBLY

Fig 1: Mass Air Flow Meter Resistance Graph

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step

INSPECT ENGINE COOLANT TEMPERATURE SENSOR

Remove the engine coolant temperature sensor.

Measure the resistance between the terminals of the engine coolant temperature sensor.

Standard resistance

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Specified Condition
1 - 2	2 to 3 kΩ at 20°C (68°F)
1 - 2	0.2 to 0.4 kΩ at 80°C (176°F)

NOTE: In case of checking the engine coolant temperature sensor in water, be careful not to allow water to contact the terminals. After checking, dry the sensor.

HINT:

Alternative procedure: Connect an ohmmeter to the installed engine coolant temperature sensor and read the resistance. Use an infrared thermometer to measure the engine temperature in the immediate vicinity of the sensor. Compare these values to the resistance/ temperature graph. Change the engine temperature (warm up or allow to cool down) and repeat the test.

Reinstall the engine coolant temperature sensor.

NG: REPLACE ENGINE COOLANT TEMPERATURE SENSOR

Fig 2: Measuring Resistance Between Terminals Of Engine Coolant Temperature Sensor

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step

INSPECT CRANKSHAFT POSITION SENSOR

Disconnect the C3 crankshaft position sensor connector.

Measure the resistance between the terminals of the crankshaft position sensor connector.

Standard resistance

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Specified Condition
1 - 2	1,850 to 2,450 Ω at 20°C (68°F)

Reconnect the crankshaft position sensor connector.

NG: REPLACE CRANKSHAFT POSITION SENSOR

Fig 3: Inspecting Crankshaft Position Sensor Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step

INSPECT VVT SENSOR

Disconnect the V5 and V4 VVT sensor connectors.

Measure the resistance between the terminals of the VVT sensor connector.

Standard resistance

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Specified Condition
1 - 2	950 to 1,250 Ω at 20°C (68°F)

Reconnect the VVT sensor connector.

NG: REPLACE VVT SENSOR

Fig 4: Identifying VVT Sensor Connector Terminals

OK: Go to next step

INSPECT THROTTLE CONTROL MOTOR

Disconnect the throttle control motor connector.

Using an ohmmeter, measure the motor resistance between terminals 1 (M-) and 2 (M+).

Standard resistance

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Specified Condition
1 - 2	0.3 to 100 Ω at 20°C (68°F)

NG: REPLACE THROTTLE BODY ASSEMBLY

Fig 5: Identifying Throttle Body Assembly Connector Terminals

OK: Go to next step

INSPECT THROTTLE POSITION SENSOR

Connect the intelligent tester to the DLC3.
Turn the ignition switch to the ON position and turn the intelligent tester ON.
Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ETCS / THROTTLE SSR #1 and THROTTLE SSR #2.

Check the values displayed on the tester.

Standard voltage

ITEM SPECIFIED CONDITION

Item	Condition	Specified Condition
THROTTLE SSR #1	Throttle fully closed	2.15 to 2.35 V
THROTTLE SSR #1	Throttle fully open	4.5 to 5.0 V
THROTTLE SSR #2	Throttle fully closed	0.66 to 0.76 V
THROTTLE SSR #2	Throttle fully open	3.8 to 4.2 V

NG: REPLACE THROTTLE BODY ASSEMBLY

OK: REPLACE HV CONTROL ECU