Diagnostic procedure

NO. 1 LOW FUEL WARNING LIGHT INDICATION IS INCORRECT (INSTRUMENT CLUSTER) DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	Switch the ignition ON. Verify that the fuel gauge needle does not move after the ignition is switched off, or the display does not indicate F even though the fuel tank is full. Is the fuel gauge normal?	Yes	Troubleshooting completed. (The system is normal.)
1		No	Go to the next step.
2	Retrieve the DTC of instrument cluster using M-MDS. (See DTC INSPECTION .) Is the DTC detected?	Yes	Go to applicable DTC troubleshooting procedure. (See DTC TABLE .)
2		No	Go to the next step.
3	Inspect the instrument cluster. (See INSTRUMENT CLUSTER INSPECTION .) Is the display normal?	Yes	Go to Step 7.
3		No	Go to the next step.
4	Switch the ignition OFF (LOCK). Inspect the instrument cluster connector terminals for poor connection (such as damaged/pulled-out pins, and corrosion). Are the terminals normal?	Yes	Go to the next step.
4		No	Repair or replace the terminal.
5	Switch the ignition OFF (LOCK). Inspect for continuity following the wiring harness between instrument cluster and fuel gauge sender unit. T terminal-C terminal R terminal-A terminal Is there continuity?	Yes	Go to the next step.
5		No	Repair or replace for open circuit in the wiring harness between the instrument cluster and the fuel gauge sender unit.
6	Switch the ignition OFF (LOCK). Remove the instrument cluster. Disconnect the instrument cluster connector. Inspect for continuity between the following wiring harness. R terminal-ground Is there continuity?	Yes	Repair or replace the wiring harness for short to ground.
6	Courtesy of MAZDA MOTORS CORP.	No	Replace the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION .)
7	Switch the ignition OFF (LOCK). Inspect the fuel gauge sender unit connector terminals for poor connection (such as damaged/pulled-out pins, and corrosion). Are the terminals normal?	Yes	Go to the next step.
7		No	Repair or replace the terminal.
8	Switch the ignition OFF (LOCK). Is the fuel gauge sender unit installed properly?	Yes	Inspect the fuel gauge sender unit.
8		No	Reinstall the fuel gauge sender unit.