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Home >> Mazda >> 2012 >> 6 s Touring Plus >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Symptom Troubleshooting [Instrument Cluster (With Malfunction Warning Light)] >> No. 1 Fuel Gauge Needle Position Incorrect [Instrument Cluster (With Malfunction Warning Light)] >> Diagnostic Procedure

Diagnostic Procedure

STEP INSPECTION ACTION
1
  • Switch the ignition to ON.
  • Verify that the fuel gauge needle does not move after the ignition is switched to off (LOCK), 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.)
No Go to the next step.
2 Yes Go to applicable DTC troubleshooting procedure.
(See DTC TABLE [INSTRUMENT CLUSTER] .)
No
  • If the communication error message is not displayed on M-MDS screen, go to the next step.
  • If the communication error message is displayed on the M-MDS screen, go to Step 4.
3
  • Inspect the following fuel gauge needle indication when commands are sent to the instrument cluster using the M-MDS active command modes FUEL_GAUGE.

    (See ACTIVE COMMAND MODES TABLE [INSTRUMENT CLUSTER] .)

  • Does the fuel gauge indicator move according to the command?
 Yes Go to Step 5.
No Replace the instrument cluster.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION .)
4
  • Inspect the instrument cluster connector connection.
  • Is the instrument cluster connector connected securely?
 Yes Inspect for an open or short circuit in the instrument cluster power and ground circuit.
No Connect the connector securely.
5
  • Inspect the fuel gauge sender unit connector.
  • Is the fuel gauge sender unit connector connected securely?
 Yes Go to the next step.
No Connect the connector securely.
6
  • Switch the ignition to off (LOCK).
  • Disconnect the instrument cluster and the fuel gauge sender unit connectors.
  • Inspect for continuity between the instrument cluster wiring harness-side connector (24-pin) terminal 2M and ground.
  • Is there continuity?
 Yes Repair or replace for a short to the ground circuit between the instrument cluster and the fuel gauge sender unit.
No Go to the next step.
7
  • Instrument cluster and fuel gauge sender unit connectors disconnected.
  • Inspect for continuity between the instrument cluster and the fuel gauge sender unit.
    • Terminal 2M - terminal C
    • Terminal 2D - terminal E
  • Is there continuity?
 Yes Go to the next step.
No Repair or replace for an open circuit between the instrument cluster and the fuel gauge sender unit.
8
  • Turn the ignition switch off.
  • Is the fuel gauge sender unit installed properly?
 Yes Inspect the fuel gauge sender unit.
No Reinstall the fuel gauge sender unit.
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