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Home >> Mazda >> 2022 >> CX-5 S >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 15 (On-Board Diagnostic - Engine Control System (VIN Y) (2 Of 7)) >> DTC P0132-00: A/F Sensor Circuit High Input >> Troubleshooting Diagnostic Procedure >> Intention of troubleshooting procedure

Intention of troubleshooting procedure

WARNING: This page is about a different variant/trim than selected.
TROUBLESHOOTING DIAGNOSTIC PROCEDURE

STEP INSPECTION RESULTS ACTION
1 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 Repair or replace the connector and/or terminals, then go to Step 5.
No Go to the next step.
2 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 Repair or replace the connector and/or terminals, then go to Step 5.
No Go to the next step.
3 PURPOSE: INSPECT A/F SENSOR CIRCUIT FOR SHORT TO POWER SUPPLY
  • Verify that the A/F sensor and PCM connectors are disconnected.
  • Switch the ignition ON (engine off).
    NOTE:
    • Another DTC may be stored by the PCM detecting an open circuit.
  • Measure the voltage at the following terminals (wiring harness-side):
  • A/F sensor terminal F
  • A/F sensor terminal D
    • A/F sensor terminal B
  • Is the voltage 0 V?
 Yes Go to the next step.
No Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
  • A/F sensor terminal F-PCM terminal 1G
  • A/F sensor terminal D-PCM terminal 1C
  • A/F sensor terminal B-PCM terminal 1L

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 a short to power supply.
  • Repair or replace the malfunctioning part.

If there is no common connector:
  • Repair or replace the wiring harness which has a short to power supply.

Go to Step 5.
4 PURPOSE: DETERMINE INTEGRITY OF A/F SENSOR
  • Start the engine and warm it up completely.
  • Access the O2S11 PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST ).
  • 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 next step.
No Replace the A/F sensor, then go to the next step.
(See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [VIN Y] ).
5 PURPOSE: VERIFICATION OF VEHICLE REPAIR COMPLETION
  • Always reconnect all disconnected connectors.
  • Clear the DTC from the PCM memory using the M-MDS. (See CLEARING DTC ).
  • Perform the KOER self test. (See KOEO/KOER SELF TEST ).
  • Is the same Pending DTC present?
 Yes Repeat the inspection from Step 1.

Go to the next step.
No Go to the next step.
6 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 ).
No DTC troubleshooting completed.
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