Confirmation Driving Pattern

WARNING: This page is about a different car, the 2006 Lexus GS 430. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Confirmation Driving Pattern Graph

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
Allow the engine to idle until ECT reaches 40°C (104°F).
Allow the vehicle to run at 60 km/h (38 mph) or more for 3 minutes or more.

HINT:

It is possible the malfunctioning area can be found using the ACTIVE TEST A/F CONTROL operation. The ACTIVE TEST can determine if the heated oxygen sensor or other potential trouble areas are malfunctioning or not.

The injection volume can be switched to -12.5% (decrease) or +25% (increase) by the ACTIVE TEST.

The ACTIVE TEST procedure enables a technician to check and graph the output voltage of the heated oxygen sensors.

Procedure:

Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
Turn the engine switch on (IG).
Warm up the engine by running the engine at 2,500 RPM for approximately 90 seconds.
Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / A/F CONTROL.

Perform the ACTIVE TEST while the engine is idling.

Standard:

The heated oxygen sensor reacts in accordance with the increase and decrease of injection volume:

+25% --> RICH output: More than 0.55 V

-12.5% --> LEAN output: Less than 0.4 V

NOTE: The heated oxygen sensor (sensor 1) output has a few seconds of delay and the heated oxygen sensor (sensor 2) output has a maximum of 20 seconds of delay. If the vehicle is short on fuel, the air-fuel ratio becomes LEAN and the DTCs will be recorded.

HEATED OXYGEN SENSOR CHART

Case	Heated Oxygen Sensor Voltage (sensor 1)		Heated Oxygen Sensor Voltage (sensor 2)		Main Suspected Trouble Area
1	Injection Volume +25% -12.5%	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Injection Volume +25% -12.5%	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	-
1	Heated oxygen sensor Voltage 0.55 V or more Below 0.4 V	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Heated oxygen sensor Voltage 0.5 V or more Below 0.4 V	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	-
2	Injection Volume +25% -12.5%	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Injection Volume +25% -12.5%	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Heated oxygen sensor (sensor 1) Heated oxygen sensor heater (sensor 1)
2	Heated oxygen sensor Voltage Almost no reaction	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Heated oxygen sensor Voltage 0.5 V or more Below 0.4 V	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3	Injection Volume +25% -12.5%	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Injection Volume +25% -12.5%	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Heated oxygen sensor (sensor 2) Heated oxygen sensor heater (sensor 2)
3	Heated oxygen sensor Voltage 0.55 V or more Below 0.4 V	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Heated oxygen sensor Voltage Almost no reaction	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4	Injection Volume +25% -12.5%	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Injection Volume +25% -12.5%	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Injector fuel pressure, Exhaust gas leak, etc. (air-fuel ratio is extremely LEAN or RICH)
4	Heated oxygen sensor Voltage Almost no reaction	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Heated oxygen sensor Voltage Almost no reaction	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was LEAN or RICH, and other data from the time the malfunction occurred.
Bank 1 refers to the bank that includes No. 1 cylinder.
Bank 2 refers to the bank that does not include No. 1 cylinder.
No. 1 cylinder is located in the front part of the engine, opposite the transmission.
Sensor 1 refers to the sensor closest to the engine body.

CHECK OTHER DTC OUTPUT

Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO/ CURRENT CODES.

Read the DTCs.

Result

DIAGNOSTIC TROUBLE CODE CHART

Display (DTC output)	Proceed to
P0134 or P0154	A
P0134 or P0154 and other DTCs	B

B : GO TO RELEVANT DTC CHART

A : GO TO NEXT STEP.

READ DATA LIST (HEATED OXYGEN SENSOR (SENSOR 1) VOLTAGE)
1. Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
2. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / O2S B1S1 (O2S B2S1).
3. Allow the engine to idle until the ECT reaches 40°C (104°F).
4. Quickly depress the accelerator pedal 3 times until the engine RPM reaches 4,000 RPM. Then, read the heated oxygen sensor (sensor 1) voltage.
  Standard voltage:
  
  The heated oxygen sensor (sensor 1) voltage is 0.45 V or more at least once.
OK : Go to step 11

NG : GO TO NEXT STEP.
CHECK CONNECTION PCV HOSE
OK:

PCV hose is connected correctly and is not damaged.

NG : REPAIR OR REPLACE PCV HOSE

OK : GO TO NEXT STEP.

INSPECT HEATED OXYGEN SENSOR

Disconnect the E23 and E44 sensor connectors.

Measure the resistance of the sensor.

Fig 2: Inspecting Heated Oxygen Sensor

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Specified Condition
1 (HT1A) - 2 (+B)	11 to 16 Ω
1 (HT2A) - 2 (+B)	11 to 16 Ω
1 (HT1A) - 4 (E2)	10 kΩ or higher
1 (HT2A) - 4 (E2)	10 kΩ or higher

NG : REPLACE HEATED OXYGEN SENSOR

OK : GO TO NEXT STEP.

INSPECT INTEGRATION RELAY (EFI MAIN)

Remove the integration relay from the engine room No. 2 junction block.

Measure the resistance of the EFI MAIN relay.

Fig 3: Identifying Integration Relay At Engine Room Junction Block

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard resistance

TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

Terminal Connections	Specified Condition
2A-8 - 2C-1	10 kΩ or higher
2A-8 - 2C-1	Below 1 Ω (when battery voltage is applied to terminals 2A-6 and 2A-7)

NG : REPLACE INTEGRATION RELAY

OK : GO TO NEXT STEP.

CHECK WIRE HARNESS (HEATED OXYGEN SENSOR (SENSOR 1) - ECM)

Disconnect the E23 and E44 sensor connectors.
Disconnect the E6 and E8 ECM connectors.

Measure the resistance of the wire harness side connectors.

Fig 4: Identifying E6 And E8 ECM Connectors

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Specified Condition
E23-1 (HT1A) - E8-24 (HT1A)	Below 1 Ω
E23-3 (OX1A) - E8-30 (OX1A)	Below 1 Ω
E44-1 (HT2A) - E6-5 (HT2A)	Below 1 Ω
E44-3 (OX2A) - E6-28 (OX2A)	Below 1 Ω
E23-1 (HT1A) or E8-24 (HT1A) - Body ground	10 kΩ or higher
E23-3 (OX1A) or E8-30 (OX1A) - Body ground	10 kΩ or higher
E44-1 (HT2A) or E6-5 (HT2A) - Body ground	10 kΩ or higher
E44-3 (OX2A) or E6-28 (OX2A) - Body ground	10 kΩ or higher

NG : REPAIR OR REPLACE HARNESS AND CONNECTOR

OK : GO TO NEXT STEP.

CHECK AIR INDUCTION SYSTEM
1. Check the air induction system for vacuum leaks.
  OK:
  
  There are no vacuum leaks in air induction system.
NG : REPAIR OR REPLACE AIR INDUCTION SYSTEM

OK : GO TO NEXT STEP.
CHECK FUEL PRESSURE
1. Check the fuel pressure (REMOVAL ).
NG : REPAIR OR REPLACE FUEL SYSTEM

OK : GO TO NEXT STEP.
INSPECT FUEL INJECTOR
1. Check the injector injection (whether fuel volume is high or low, and whether injection pattern is poor).
NG : REPLACE FUEL INJECTOR

OK : GO TO NEXT STEP.
CHECK FOR EXHAUST GAS LEAKAGE
NG : REPAIR OR REPLACE EXHAUST SYSTEM

OK : REPLACE HEATED OXYGEN SENSOR
PERFORM CONFIRMATION DRIVING PATTERN
HINT:

Clear all DTCs before performing the confirmation driving pattern.

NEXT

READ OUTPUT DTC (DTC P0134 OR P0154 IS OUTPUT AGAIN)

Clear the DTC (see DIAGNOSIS SYSTEM ).
Start the engine and allow the engine to idle for 15 seconds or more.

Read the DTC.

Result

DIAGNOSTIC TROUBLE CODE CHART

Display (DTC output)	Proceed to
None	A
P0134 or P0154	B

B : REPLACE ECM

A : GO TO NEXT STEP.

CONFIRM IF VEHICLE HAS RUN OUT OF FUEL
1. If the vehicle has run out of fuel, proceed to A.
2. If the vehicle has not run out of fuel, proceed to B.
B : CHECK FOR INTERMITTENT PROBLEMS

A : DTC IS CAUSED BY RUNNING OUT OF FUEL