TPMS WARNING LIGHT ILLUMINATES [DIRECT TIRE PRESSURE MONITORING SYSTEM (TPMS)]

id020305000400

Caution

•  The tire pressure cannot be measured accurately after driving for a long period due to the internal temperature and pressure. Stop the vehicle for approx. 1 hour and then perform the tire pressure measurement and adjustment.

•  Use a high accuracy digital gauge for measurement of the tire pressure.

Note

•  If the DTC clearing procedure is implemented, the TPMS warning light turns off.

•  The snapshot (temperature and pressure) stored when the TPMS warning light is turned on and off can be verified by operating the M-MDS.

Troubleshooting item	TPMS warning light illuminates
Description	•  TPMS warning light illuminates continuously •  TPMS warning light illuminates after engine start and turns off after driving for a period of time
Possible cause	•  Tire pressure is lower than the specification. (Such as loss of air pressure due to puncture.) •  The tire pressure decreases when the internal temperature of the tire is low. (The tire pressure, which was slightly below the standard while the tire was cold, exceeded the standard as the air expanded due to the heat generation during driving, causing the TPMS warning light to turn off temporarily.) •  TPMS warning light circuit malfunction in the instrument cluster.
System wiring diagram	•  Not applicable
Connector diagram	•  Not applicable

Diagnostic Procedure

Step	Inspection	Results	Action
1	VERIFY TPMS WARNING LIGHT ILLUMINATION CONDITION •  Is the TPMS warning light illuminated?	Yes	Identify the tire causing the TPMS warning light to illuminate on the multi-information display, then go to the next step.
		No	Verify the tire position where the tire pressure is below the standard on the Mazda Connect screen, then go to the next step.
2	INSPECT TIRE •  Visually inspect the tire. •  Is there any foreign object adhering to the tire?	Yes	Remove the any foreign object. Replace the tire if necessary, then go to the next step.
		No	Go to the next step.
3	INSPECT TIRE PRESSURE •  Measure the tire pressure when the tires are cold. •  Is the tire pressure lower than the specification? (See WHEEL AND TIRE SPECIFICATION [(E)].)	Yes	Adjust the tire pressure to the specification when the tires are cold, then go to the next step. (See TIRE PRESSURE ADJUSTMENT [(E)].)
		No	Go to the next step.
4	VERIFY TPMS WARNING LIGHT •  Verify the TPMS warning light. •  Does the TPMS warning light turn off?	Yes	Symptom troubleshooting completed. Explain to the customer what has been repaired.
		No	Go to the next step.
5	VERIFY TPMS WARNING LIGHT AFTER DRIVING THE VEHICLE •  Drive the vehicle at speed of 25 km/h {16 mph} or more for 3 min or more. •  Verify the TPMS warning light. •  Does the TPMS warning light turn off?	Yes	Symptom troubleshooting completed. Explain to the customer what has been repaired.
		No	Go to the next step.
6	VERIFY BODY CONTROL MODULE (BCM) DTC •  Using the M-MDS, clear the DTC from the body control module (BCM). (See CLEARING DTC.) •  Using the M-MDS, perform the body control module (BCM) DTC inspection. (See DTC INSPECTION.) •  Is the DTC displayed?	Yes	Go to applicable DTC troubleshooting procedure. (See DTC TABLE [BODY CONTROL MODULE (BCM) (E)].)
		No	Malfunction is in the TPMS warning light illumination control circuit in the instrument cluster. Replace the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.) Perform the repair completion verification.
Repair completion verification	VERIFY THAT MALFUNCTION SYMPTOMS DO NOT RECUR AFTER REPAIR •  Install/connect the part removed/disconnected during the troubleshooting procedure. •  Has the malfunction symptom been eliminated?	Yes	Complete the symptom troubleshooting. Explain to the customer what has been repaired.
		No	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, perform the diagnosis from Step 1.