Mazda MX-6 1998, Workshop Manual, Page: 1118 / 1282

TROUBLESHOOTING [INSTRUMENTATION/DRIVER INFO.]
13 Fuel-level warning light does not illuminate with fuel tank almost empty (engine running)
TROUBLESHOOTING HINTS
Malfunction in fuel-level warning light input signal circuit
© Fuel-level warning light does not illuminate
• Fuel gauge sender unit malfunction
• Print plate malfunction
• Display unit assembly malfunction
• Malfunction in wiring harness between instrument cluster and fuel gauge sender unit
• Malfunction in wiring harness between fuel gauge sender unit and ground
Malfunction in fuel-level warning light operation circuit
© Fuel-level warning light does not illuminate
• Fuel-level warning light bulb malfunction
• Display unit assembly malfunction
STEP INSPECTION
ACTION
Turn ignition switch to LOCK.
Disconnect negative battery cable.
After 30 seconds or more, reconnect
negative battery cable.
Turn ignition switch to ON and LOCK 3 times.
Turn ignition switch to ON.
Push odometer/tripmeter switch 3 times.
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Select DTC 16 by pushing odometer/tripmeter
switch.
Does fuel-level warning light turn on and off 3
times?
Yes
Go to next step.
No Go to step 6.
Select DTC 22 by pushing odometer/tripmeter
switch.
Does LCD indicate “000”?
Yes Go to next step.
No Replace fuel gauge sender unit.
Remove meter hood.
Remove instrument cluster.
Disconnect fuel pump connector.
Check for continuity between terminal 2E at
instrument cluster (14-pin) connector of wiring
harness and ground.
Is there continuity?
Yes Repair wiring harness between instrument cluster and fuel
gauge sender unit.
No
Go to next step.
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