Confirmation Driving Pattern

HINT:

• This confirmation driving pattern is used in the "PERFORM CONFIRMATION DRIVING PATTERN" procedure of the following diagnostic troubleshooting procedure.

• Performing this confirmation pattern will activate the Heated Oxygen (HO2) sensor monitor. (The catalyst monitor is performed simultaneously.) This is very useful for verifying the completion of a repair.

ES

Vehicle Speed

Between 64 km/h and — 113 km/h (40 mph and 70 mph)

This test will not be completed if the vehicle is driven at absolutely constant speed such as with cruise control

activated.

Idling _

(g)

/

Ignition Switch OFF

Warm up

Time

10 minutes

(Note: Even if vehicle stops during driving pattern, test can be resumed)

P

A115372E26

READINESS TESTS

MISFIRE MON

AVAIL

FUEL SYS MON

AVAIL

COMP MON

AVAIL

CAT EVAL

INCMPL

HTD CAT EVAL

N/A

EVAP EVAL

INCMPL

2nd AIR EVAL

N/A

A/C EVAL

N/A

02S EVAL

INCMPL

02S HTR EVAL

INCMPL

EGR EVAL

(a) Connect the intelligent tester to the DLC3.

(b) Turn the ignition switch ON.

(e) Select the following menu items: DIAGNOSIS / CARB OBD II / READINESS TESTS.

(f) Check that O2S EVAL is INCMPL (incomplete).

(g) Start the engine and warm it up.

(h) Drive the vehicle at between 64 km/h and 113 km/h (40 mph and 70 mph) for at least 10 minutes.

(i) Note the state of the Readiness Tests items. Those items will change to COMPL (complete) as the O2S EVAL monitor operates.

(j) On the tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO /

PENDING CODES and check if any DTCs (any pending DTCs) are set.

HINT:

If O2S EVAL does not change to COMPL, and any pending DTCs fail to set, extend the driving time.

INSPECTION PROCEDURE

HINT:

Sensor 2 refers to the sensor mounted behind the Three-Way Catalytic Converter (TWC) and located far from the engine assembly.

HINT:

Intelligent tester only:

Malfunctioning areas can be identified by performing the A/F CONTROL function provided in the ACTIVE

TEST. The A/F CONTROL function can help to determine whether the Air-Fuel Ratio (A/F) sensor, Heated

Oxygen (HO2) sensor and other potential trouble areas are malfunctioning.

The following instructions describe how to conduct the A/F CONTROL operation using the intelligent tester.

(a)Connect the intelligent tester to the DLC3.

(b)Start the engine and turn the tester ON.

(c)Warm up the engine at an engine speed of 2,500 rpm for approximately 90 seconds.

(d)On the tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / A/ F CONTROL.

(e)Perform the A/F CONTROL operation with the engine idling (press the RIGHT or LEFT button to change the fuel injection volume).

(f) Monitor the voltage outputs of the A/F and HO2 sensors (AFS B1 S1 and O2S B1 S2) displayed on the tester.

HINT:

• The A/F CONTROL operation lowers the fuel injection volume by 12.5 % or increases the injection volume by 25 %.

• The sensors react in accordance with increases and decreases in the fuel injection volume.

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

Don't pay hundreds of dollars to find out what is wrong with your car. This book is dedicated to helping the do it yourself home and independent technician understand and use OBD-II technology to diagnose and repair their own vehicles.

Get My Free Ebook


Post a comment