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Home >> Mazda >> 2021 >> 3 Base >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting - Engine (VINS 7, L, M) >> Will Not Crank >> Notes

Will Not Crank: Notes

WILL NOT CRANK (VINs 7, L, M), US) DESCRIPTION AND POSSIBLE CAUSE

Troubleshooting item Will not crank
Description
  • Starter does not work.
Possible cause
  • Battery malfunction
  • Fuse malfunction
  • Poor connection of push button start connector
  • Instrument cluster or related wiring harness malfunction
  • Immobilizer system malfunction
  • PCM continuous memory DTC is stored
  • Open circuit in PCM power supply circuit
  • Open circuit in main relay control circuit
  • CAN communication line malfunction between data link connector-2 and PCM
  • Main relay malfunction (stuck open)
  • Open or poor ground circuit
  • Poor connection of vehicle body ground
  • Starter relay malfunction
  • Starter interlock switch and related wiring harness malfunction (MTX)
  • TCM and related wiring harness malfunction (ATX)
  • Short to ground in starter relay control circuit
  • Open circuit in starter relay control circuit
  • Short to ground or open circuit in starter relay power supply circuit
  • Short to ground or open circuit in starter power supply circuit
  • Starting system malfunction
  • Following circuit and/or connector malfunction:
  • Between coil antenna and LF control unit
  • Between LF control unit and climate control unit
  • Between climate control unit and body control module (BCM)
  • Between body control module (BCM) and PCM
  • Seized engine, flywheel (MTX) or drive plate (ATX)
  • Engine damage during compression due to liquid (such as water, fuel, or engine oil) penetration into cylinder
WARNING:
  • The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services:
  • Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel.
  • Highly pressurized fuel may spray out if the fuel line is cut. Due to the following dangers occurring with a fuel spray, always complete the "Fuel Line Safety Procedure" to prevent the fuel from spraying. (See BEFORE SERVICE PRECAUTION [(VIN M)] .) (See BEFORE SERVICE PRECAUTION [(VIN 7 & VIN L)] .)
  • Fuel may cause irritation if it comes in contact with skin and eyes.
  • If fuel ignites and causes a fire, it may lead to serious injury or death, and damage to property and facilities.
CAUTION:
  • Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.
G13712321Courtesy of MAZDA MOTORS CORP.
G13712322Courtesy of MAZDA MOTORS CORP.
G13712323Courtesy of MAZDA MOTORS CORP.
G13712324Courtesy of MAZDA MOTORS CORP.