DTC P0134:00 [MZR-CD 2.2]

id0102f3702500

DTC P0134:00

A/F sensor no activity detected
DETECTION CONDITION
•  The PCM monitors the input voltage from A/F sensor when the following conditions are met. If the input voltage from the sensor never exceeds 0.1 V for specified period, the PCM determines that sensor circuit is not activated.
MONITORING CONDITIONS
―  Following conditions are met
•  Engine is running.
•  Battery voltage is 11—16 V.
•  A/F sensor negative terminal (PCM terminal 2AE) voltage is less than 1.8 V
•  A/F sensor positive terminal (PCM terminal 2AF) voltage is more than 4.7 V
Diagnostic support note
•  The MIL illuminates if the PCM detects the above malfunction condition in first drive cycle.
•  PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle.
•  FREEZE FRAME DATA (mode2) and snapshot data are available.
•  The DTC is stored in the PCM memory.
POSSIBLE CAUSE
•  Short to ground in wiring harness between A/F sensor terminal A and PCM terminal 2AF
•  Open circuit or short to ground in wiring harness between A/F sensor terminal A and PCM terminal 2AF
•  A/F sensor malfunction
•  PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY FREEZE FRAME DATA (MODE2) OR SNAPSHOT DATA HAVE BEEN RECORDED
•  Have FREEZE FRAME DATA (mode2) or snapshot data been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA (mode2) and snapshot data on the repair order, then go to the next step.
2
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform the 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.
3
VERIFY RELATED PENDING AND STORED DTC
Note
•  If fuel monitor DTC, DTC P0132:00 is retrieved, ignore it until P0134:00 is fixed.
•  Switch the ignition to off, then to the ON position (Engine off).
•  Verify pending and stored DTCs using the M-MDS.
•  Are other DTCs present?
Yes
Go to the appropriate DTC troubleshooting procedures.
No
Go to the next step.
4
IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA (MODE2)
•  Is DTC P0134:00 on FREEZE FRAME DATA (mode2)?
Yes
Go to the next step.
No
Go to troubleshooting procedures for DTC on FREEZE FRAME DATA (mode2).
(See DTC TABLE [MZR-CD 2.2].)
5
INSPECT A/F SENSOR SIGNAL CIRCUIT FOR SHORT TO GROUND
•  Switch the ignition off.
•  Disconnect the A/F sensor connector and PCM connector.
•  Inspect for continuity between the A/F sensor terminal A (wiring harness-side) to body ground.
•  Is there continuity?
Yes
Repair or replace the wiring harness for a possible short to ground, then go to Step 8.
No
Go to the next step.
6
INSPECT A/F SENSOR SIGNAL CIRCUIT FOR OPEN CIRCUIT
•  Disconnect the A/F sensor connector and PCM connector.
•  Inspect for continuity between the A/F sensor terminal A (wiring harness-side) to the PCM terminal 2AF (wiring harness-side).
•  Is there continuity?
Yes
Go to the next step
No
Repair or replace the wiring harness for a possible open circuit, then go to Step 8.
7
INSPECT A/F SENSOR
•  Inspect A/F sensor.
•  Is there any malfunction?
Yes
Replace the A/F sensor, then go to the next step.
(See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [MZR-CD 2.2].)
No
Go to the next step
8
VERIFY TROUBLESHOOTING OF DTC P0134:00 COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Switch the ignition to ON (Engine off).
•  Clear the DTC from memory using the M-MDS.
•  Perform the Repair Verification Drive Mode.
•  Is the PENDING CODE for this DTC present?
Yes
Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [MZR-CD 2.2].)
No
Go to the next step.
9
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “After Repair Procedure”.
•  Are any DTC present?
Yes
Go to the applicable DTC troubleshooting.
(See DTC TABLE [MZR-CD 2.2].)
No
Troubleshooting completed.