Hint
: hand–held tester only: narrowing down the trouble area is possible by performing ”a/f control” active test (heated oxygen sensor or other trouble areas can be distinguished).
Hint
: ”a/f control” is the active test which changes the injection volume to –12.5 % Or +25 %.
Result:
heated oxygen sensor reacts in accordance with increase and decrease of
injection volume
+25 % rich output: more than 0.5 V,
–12.5 % Lean output: less than 0.4 V
Notice
: there is a delay of few seconds in the sensor 1 (front sensor) output, and there is about 20 seconds delay at maximum in the sensor 2 (rear sensor).
The following of a/f control procedure enables the technician to check and graph the voltage outputs of both the heated oxygen sensors.
For displaying the graph indication, enter ”active test / a/f control / user data”, then select ”o2s b1s1 and o2s b1s2” by pressing ”yes” button and push ”enter” button before pressing ”f4” button.
Hint
:
Check for conditions that would cause the engine to run rich.
Check for conditions that would cause the engine to run lean.
1 Check other dtc output(in addition to dtc p0134)
Result:
Hint
: if any other codes besides p0134 are output, perform the troubleshooting for those dtcs first.
2 Read value of hand–held tester or obd ii scan tool(output voltage of heated oxygen sensor)
Hint
: quickly accelerate the engine to 4,000 rpm 3 times by using the accelerator pedal.
Standard: heated oxygen sensor outputs a rich signal (0.45 V or more) at least once.
3 Check connection of pcv hose
4 Inspect heated oxygen sensor(heater resistance)
Standard:
5 Inspect efi relay
Standard:
6 Check harness and connector(heated oxygen sensor – ecm)
Standard (check for open):
Standard (check for short):
7 Check whether misfire is occurred or not by monitoring dtc and data list
8 Check air induction system
9 Check fuel pressure
10 Inspect fuel injector assy(injection and volume)
11 Check for exhaust gas leaks
Replace heated oxygen sensor
12 Perform confirmation driving pattern
Hint
: clear all dtcs prior to performing the confirmation pattern.
13 Read output dtc(dtc p0134 is output again)
Result:
14 Confirm if vehicle has run out of fuel in past
Dtc is caused by running out of fuel
Replacement
1. Remove console box sub–assy rear
2. Remove parking brake lever sub–assy
3. Remove exhaust pipe assy front
4. Remove front floor heat insulator no.1
Remove the 3 nuts and front floor insulator no.1.
5. Remove front floor heat insulator no.2
Remove the 2 nuts and front floo ...
Inspection procedure
1 Inspect fuse(stop)
Turn the ignition switch to off.
remove the stop fuse from the instrument panel j/b.
check continuity of the stop fuse.
Ok: continuity
2 Inspect stop lamp switch assy
Disconnect the stop lamp switch assy connector.
check continuity betw ...
Shifting the shift lever
Vehicles without a smart key system:
While the engine switch is in the “ON” position, depress the brake pedal and
move the shift lever.
Vehicles with a smart key system: While the engine switch is in IGNITION ON mode,
depress the brake pedal and move the shift lever.
When shifting the shif ...