DTC P2243:00 [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5]

id0102h9303600

Note
•  To determine the malfunctioning part, proceed with the diagnostics from "Function Inspection Using M-MDS".

Details On DTCs

DESCRIPTION

A/F sensor reference voltage circuit open
DETECTION CONDITION
Determination conditions
•  A condition in which the PCM terminal 1W voltage is the specified value or more continues for 30 s.
Preconditions
•  Switch the ignition ON (engine off or on)
•  Battery voltage: 11—18 V*1
•  The following DTCs are not detected:
―  A/F sensor heater: P0031:00, P0032:00
*1: Value can be verified by displaying PIDs using M-MDS
Malfunction determination period
•  30 s period
Drive cycle
•  2
Self test type
•  CMDTC self test, KOER self test
Sensor used
•  A/F sensor
FAIL-SAFE FUNCTION
•  Not applicable
VEHICLE STATUS WHEN DTCs ARE OUTPUT
•  Illuminates check engine light.
POSSIBLE CAUSE
•  A/F sensor connector or terminals malfunction
•  PCM connector or terminals malfunction
•  Open circuit in wiring harness between A/F sensor terminal F and PCM terminal 1W
•  A/F sensor malfunction
•  PCM malfunction


System Wiring Diagram

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Function Explanation (DTC Detection Outline)

•  With an open circuit in the supply voltage line and a condition in which the supply voltage to PCM terminal 1W continues to be supplied, the PCM determines an open circuit in the wiring harness between the A/F sensor and the PCM and stores a DTC.

Repeatability Verification Procedure

1.  Warm up the engine to allow the engine coolant temperature to reach 80 °C {176 °F} or more.
2.  Start the engine and leave it idling for 90 s.

PID Item/Simulation Item Used In Diagnosis

PID/DATA monitor item table

Item

Definition

Unit

Condition/Specification
O2S11
A/F sensor current
µA
•  Idle (after warm up): Approx. -39 µA
•  Deceleration fuel cut (accelerator pedal released from engine speed of 4,000 rpm or more): Approx. 3.84 mA


Function Inspection Using M-MDS

STEP

INSPECTION

RESULTS

ACTION
1
PURPOSE: VERIFY RELATED SERVICE INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service Information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
2
PURPOSE: RECORD VEHICLE STATUS AT TIME OF DTC DETECTION TO UTILIZE WITH REPEATABILITY VERIFICATION
•  Has the FREEZE FRAME DATA (Mode 2)/snapshot data been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA (Mode 2)/snapshot data on the repair order, then go to the next step.
Note
•  Recording can be facilitated using the screen capture function of the PC.
3
PURPOSE: INSPECT A/F SENSOR CONNECTOR CONDITION
•  Switch the ignition off.
•  Disconnect the A/F sensor connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
•  Is there any malfunction?
Yes
Replace the A/F sensor.
(See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].)
Go to the troubleshooting procedure to perform the procedure from Step 1.
No
Go to the next step.
4
PURPOSE: INSPECT PCM CONNECTOR CONDITION
•  Disconnect the PCM connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
•  Is there any malfunction?
Yes
Replace the PCM.
(See PCM REMOVAL/INSTALLATION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].)
Go to the troubleshooting procedure to perform the procedure from Step 1.
No
Go to the next step.
5
PURPOSE: INSPECT A/F SENSOR CIRCUIT FOR OPEN CIRCUIT
•  Verify that the A/F sensor and PCM connectors are disconnected.
•  Inspect for continuity between A/F sensor terminal F (wiring harness-side) and PCM terminal 1W (wiring harness-side).
•  Is there continuity?
Yes
Go to the next step.
No
Refer to the wiring diagram and verify whether or not there is a common connector between A/F sensor terminal F and PCM terminal 1W.
If there is a common connector:
•  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has an open circuit.
Go to the troubleshooting procedure to perform the procedure from Step 1.
6
PURPOSE: DETERMINE INTEGRITY OF A/F SENSOR
•  Start the engine and warm it up completely.
•  Access the O2S11 PID using the M-MDS.
•  Drive the vehicle under the following conditions.
Warning
•  When the M-MDS is used to observe monitor system status while driving, be sure to have another technician with you, or record the data in the M-MDS using the PID/DATA MONITOR AND RECORD capturing function and inspect later.
•  While performing this step, always operate the vehicle in a safe and lawful manner.
―  After increasing the engine speed to 3,000 rpm, decelerate using engine braking.
•  Is the displayed PID value as follows?
―  O2S11: 0.25 mA or more
Yes
Go to the troubleshooting procedure to perform the procedure from Step 1.
No
Go to the next step.
7
PURPOSE: INSPECT RELATED SENSOR WIRING HARNESS AND CONNECTOR
•  Access the O2S11 PID using the M-MDS.
•  Does the PID value fluctuate when the PCM and A/F sensor connectors are shaken?
Yes
Inspect the related wiring harness and connector.
•  Repair or replace the malfunctioning part.
Go to the troubleshooting procedure to perform the procedure from Step 1.
No
Replace the A/F sensor.
(See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].)
Go to the troubleshooting procedure to perform the procedure from Step 1.


Troubleshooting Diagnostic Procedure

Intention of troubleshooting procedure
•  Step 1—2
―  Verify that the primary malfunction is resolved and there are no other malfunctions.

STEP

INSPECTION

RESULTS

ACTION
1
PURPOSE: VERIFICATION OF VEHICLE REPAIR COMPLETION
•  Always reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Perform the KOER self test.
•  Is the PENDING CODE for this DTC present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the PCM.
Go to the next step.
No
Go to the next step.
2
PURPOSE: VERIFY IF THERE IS ANY OTHER MALFUNCTION
•  Is any other DTC or pending code stored?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].)
No
DTC troubleshooting completed.