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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 138 (On-Board Diagnostic - Engine Control (3 Of 5)) >> DTC P058A; Pcm Current Sensor: Function Malfunction >> Details On DTCs

Details On DTCs

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
DETECTION CONDITION & POSSIBLE CAUSE

DESCRIPTION Current sensor: Function malfunction
DETECTION CONDITION Determination conditions
  • Error signal from the current sensor is received.
Preconditions
  • Not applicable
Malfunction determination period
  • 5 s period
Drive cycle
  • 2
Self test type
  • CMDTC self test
Sensor used
  • Current sensor
FAIL-SAFE FUNCTION
  • Inhibits the i-ELOOP control.
VEHICLE STATUS WHEN DTCs ARE OUTPUT
  • Illuminates master warning light
  • A warning message is displayed in the display.
  • Illuminates charging system warning light.
  • The engine cannot be started or the engine may stall due to battery voltage decrease.
POSSIBLE CAUSE
  • Connector or terminal malfunction of the following parts:
    • Current sensor
    • Front body control module (FBCM)
      • PCM
  • Short to ground or open circuit in current sensor power supply circuit
    • Short to ground in wiring harness between battery positive terminal and current sensor terminal A
    • MAIN 200 A fuse and/or ENG+B 7.5 A fuse malfunction
      • Open circuit in wiring harness between battery positive terminal and current sensor terminal A
  • Short to ground in wiring harness between the following terminals:
    • Current sensor terminal B-Front body control module (FBCM) terminal 2E
    • Front body control module (FBCM) terminal 2R-PCM terminal 2AK
      • Front body control module (FBCM) terminal 2L-PCM terminal 2AL
  • Short to power supply in wiring harness between the following terminals:
    • Battery positive terminal-Current sensor terminal A
    • Current sensor terminal B-Front body control module (FBCM) terminal 2E
    • Front body control module (FBCM) terminal 2R-PCM terminal 2AK
      • Front body control module (FBCM) terminal 2L-PCM terminal 2AL
  • Open circuit in wiring harness between the following terminals:
    • Current sensor terminal B-Front body control module (FBCM) terminal 2E
    • Front body control module (FBCM) terminal 2R-PCM terminal 2AK
      • Front body control module (FBCM) terminal 2L-PCM terminal 2AL
  • Current sensor malfunction
  • Front body control module (FBCM) malfunction
  • PCM malfunction