DTC P0134:00 [PCM (SKYACTIV-G (US))]
DTC P0134:00 [PCM (SKYACTIV-G (US))]
SM2565561
id0102t47025u0
-
Note
-
• To determine the malfunctioning part, proceed with the diagnostics from “Function Inspection Using M-MDS”.
Details On DTCs
|
Description |
A/F sensor circuit no activity detected |
|
|---|---|---|
|
Detection condition
|
Determination conditions
|
• The condition in which the A/F sensor element impedance is the specified value or more continues for 35 s.
|
|
Preconditions
|
• Battery voltage: 11—18 V *1
• The following DTCs are not detected:
*1: Standard can be verified by displaying PIDs using M-MDS
|
|
|
Malfunction determination period
|
• 35 s period
|
|
|
Drive cycle
|
• 2
|
|
|
Self test type
|
• CMDTC self test
|
|
|
Sensor used
|
• A/F sensor
|
|
|
Fail-safe function
|
• Fixes duty value of A/F sensor heater
• Stops fuel feedback control of A/F sensor
|
|
|
Vehicle status when DTCs are output
|
• Not applicable
|
|
|
Possible cause
|
• A/F sensor malfunction
• PCM connector or terminals malfunction
• PCM malfunction
|
|
System Wiring Diagram
• Not applicable
Function Explanation (DTC Detection Outline)
• The PCM performs verification as to whether a condition in which A/F (air/fuel ratio) detection is not implemented due to poor A/F sensor activation by a decrease in A/F sensor performance or other malfunction has occurred. A DTC is stored if the A/F sensor cannot implement feedback (non-active condition (resistance value is specified value or more)) for a continuous 35 s or more under the condition in which the A/F sensor heater control has been normally implemented. However, under a condition prior to the A/F sensor performing activation (such as ignition switched off), and if there is an open/short circuit (P2251:00) between the A/F sensor terminal D and PCM terminal 1S (COM terminal), or an open/short circuit (P2243:00) between A/F sensor terminal F and PCM terminal 1T (B+ terminal), A/F sensor activation determination is not performed and A/F sensor non-activation (P0134:00) is determined. In addition, if a temporary malfunction is determined in the previous drive cycle because poor A/F sensor activation was determined at the second drive cycle, DTCs are established for each malfunction determination even if the PCM determined a COM open circuit (P2251:00 temporary malfunction) or a B+ open circuit (P2243:00 temporary malfunction) in the previous drive cycle.
am3zzw00033699
|
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 1 min.
-
Note
-
• Match the engine coolant temperature in the recorded freeze frame data/snapshot data, the vehicle speed, and engine speed values to the best extent possible while driving the vehicle.
3. Try to reproduce the malfunction by driving the vehicle for 5 min based on the values in the freeze frame data/snapshot data.
PID Item/Simulation Item Used In Diagnosis
PID/DATA monitor item table
|
PIDs |
Reference |
|---|---|
|
A/F_SEN_CUR
|
Function Inspection Using M-MDS
|
Step |
Inspection |
Results |
Action |
|---|---|---|---|
|
1
|
PURPOSE: VERIFY RELATED REPAIR INFORMATION OR SERVICE INFORMATION AVAILABILITY
• Verify related Service Bulletins, on-line repair information, or Service Information availability.
• Is any related Information available?
|
Yes
|
Perform repair or diagnosis according to the available information.
• If the vehicle is not repaired, go to the next step.
|
|
No
|
Go to the next step.
|
||
|
2
|
PURPOSE: IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA
• Is the DTC P0134:00 on freeze frame data?
|
Yes
|
Go to the next step.
|
|
No
|
Go to the troubleshooting procedure for DTC on freeze frame data.
|
||
|
3
|
PURPOSE: RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION
• Record the freeze frame data/snapshot data and diagnostic monitoring test results (A/F sensor, HO2S related).
|
—
|
Go to the next step.
|
|
4
|
PURPOSE: INSPECT FOR OTHER RELATED DTCs
• Perform the DTC inspection for the PCM. (See DTC INSPECTION.)
• Are any other DTCs displayed?
|
Yes
|
Repair the malfunctioning location according to the applicable DTC troubleshooting.
|
|
No
|
Go to the next step.
|
||
|
5
|
PURPOSE: PERFORM DTC INSPECTION RELATED TO A/F SENSOR OPEN CIRCUIT
• Perform the DTC P2243:00 and DTC P2251:00 procedure. (See DTC P2243:00 [PCM (SKYACTIV-G (US))].) (See DTC P2251:00 [PCM (SKYACTIV-G (US))].)
|
—
|
Go to the next step.
|
|
6
|
PURPOSE: VERIFY A/F SENSOR INPUT SIGNAL
• Start the engine and warm it up completely.
• Access the A/F_SEN_CUR PID using the M-MDS. (See PID/DATA MONITOR INSPECTION.)
• Drive the vehicle under the following conditions.
• Is the displayed PID value as follows?
|
Yes
|
Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 2.
|
|
No
|
Go to the next step.
|
||
|
7
|
PURPOSE: INSPECT RELATED SENSOR WIRING HARNESS AND CONNECTOR
• Access the A/F_SEN_CUR PID using the M-MDS. (See PID/DATA MONITOR INSPECTION.)
• Does the PID value fluctuate when the following connectors are shaken?
|
Yes
|
Inspect the related wiring harness and connector.
• Repair or replace the malfunctioning part.
Go to Troubleshooting Diagnostic Procedure to perform the repair completion verification.
|
|
No
|
Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 1.
|
Troubleshooting Diagnostic Procedure
Intention of troubleshooting procedure
• Step 1—2
-
― Perform inspection of A/F sensor signal related parts.
• Repair completion verification
-
― Verify that the primary malfunction is resolved and there are no other malfunctions.
|
Step |
Inspection |
Results |
Action |
|---|---|---|---|
|
1
|
PURPOSE: VERIFY IF A/F SENSOR IS INSTALLED CORRECTLY
• Verify the A/F sensor installation condition. (See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))].) (See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))].)
• Is the installation condition normal?
|
Yes
|
Replace the A/F sensor and perform the repair completion verification.
|
|
No
|
Correctly install the A/F sensor and perform the repair completion verification.
|
||
|
2
|
PURPOSE: VERIFY IF A/F SENSOR IS INSTALLED CORRECTLY
• Verify the A/F sensor installation condition. (See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))].) (See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))].)
• Is the installation condition normal?
|
Yes
|
Go to the next step.
|
|
No
|
Correctly install the A/F sensor and perform the repair completion verification.
|
||
|
Repair completion verification 1
|
PURPOSE: VERIFY THAT VEHICLE IS REPAIRED
• Install/connect the part removed/disconnected during the troubleshooting procedure.
• Clear the DTC recorded in the memory. (See CLEARING DTC.)
• Replicate the vehicle conditions at the time the DTC was detected using the following procedure.
• Perform the DTC inspection for the PCM. (See DTC INSPECTION.)
• Is the same Pending DTC present?
|
Yes
|
Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
If the CAN communication is normal, perform the diagnosis from Step 1.
• If the malfunction recurs, replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))].) (See PCM REMOVAL/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))].)
|
|
No
|
Go to the next step.
|
||
|
Repair completion verification 2
|
PURPOSE: VERIFY IF OTHER DTCs DISPLAYED
• Perform the DTC inspection. (See DTC INSPECTION.)
• Are any other DTCs displayed?
|
Yes
|
Repair the malfunctioning location according to the applicable DTC troubleshooting.
|
|
No
|
DTC troubleshooting completed.
|