Mazda CX-7 2007 Workshop Manual page 1421

SYMPTOM TROUBLESHOOTING [INSTRUMENT CLUSTER]
NO. 1 FUEL GAUGE NEEDLE POSITION INCORRECT[INSTRUMENT CLUSTER]
1 Fuel gauge needle position incorrect
• Fuel gauge sender unit malfunction
• Instrument cluster malfunction
• Connector or pin malfunction
POSSIBLE
• Fuel gauge sender unit is improperly installed
CAUSE
• Open or short circuit in wiring harness between instrument cluster and GND
• Open or short circuit in wiring harness between instrument cluster and fuel gauge sender unit
Diagnostic procedure
STEP
• Turn the ignition switch to the ON position.
1
• Verify that the fuel gauge needle does not
move after ignition switch is turned off, or the
display does not indicate F even though fuel
tank is full.
• Is the fuel gauge normal?
• Inspect the DTC for the instrument cluster
2
ON-BOARD DIAGNOSTIC SYSTEM.
• Have DTCs B1202 or B1204 been recorded
in memory?
• Perform the check code 23 inspection.
3
• Is there any malfunction?
• Perform the check code 22 inspection.
4
• Is there any malfunction?
• Turn the ignition switch off.
5
• Inspect the instrument cluster connector
terminals for poor connection (such as
damaged/pulled-out pins, and corrosion).
• Are the terminals normal?
• Turn the ignition switch off.
6
• Inspect the fuel gauge sender unit connector
terminals for poor connection (such as
damaged/pulled-out pins, and corrosion).
• Are the terminals normal?
• Turn the ignition switch off.
7
• Is the fuel gauge sender unit installed
properly?
End Of Sie
NO. 2 ALL METERS AND GAUGES DO NOT OPERATE[INSTRUMENT CLUSTER]
2 All meters and gauges do not operate
• Instrument cluster malfunction
• Connector or pin malfunction
POSSIBLE
• Fuse malfunction
CAUSE
• Open or short circuit in power supply (IG1) wiring harness
• Open or short circuit in GND wiring harness
Diagnostic procedure
STEP
• Turn the ignition switch to the ON position.
1
• Inspect the following:
— Does the odometer/tripmeter illuminate?
— Does the fuel gauge operate?
— Does the MIL turn off within approx. 3 s?
• Inspect the METER fuse.
2
• Is the fuse normal?
• Inspect the DTC for the instrument cluster
3
ON-BOARD DIAGNOSTIC SYSTEM.
• Have any DTCs been recorded in memory?
INSPECTION
INSPECTION
Yes Troubleshooting completed.
No Go to the next step.
Yes Perform the recorded DTC's troubleshooting.
(See 09-02E-1 DTC TABLE[INSTRUMENT CLUSTER].)
No Go to the next step.
Yes Replace the instrument cluster.
No Go to the next step.
Yes Go to the next step.
No Go to Step 6.
Yes Replace the instrument cluster.
No Repair or replace the terminal.
Yes Go to the next step.
No Repair or replace the terminal.
Yes Inspect the fuel gauge sender unit.
No Reinstall the fuel gauge sender unit.
Yes Troubleshooting completed.
No Go to the next step.
Yes Go to the next step.
No Replace the fuse.
• If the fuse is melted, inspect the wiring harness for a
short to ground. Repair or replace the wiring harness,
then replace the fuse.
Yes Perform the recorded DTC's troubleshooting.
(See 09-02E-1 DTC TABLE[INSTRUMENT CLUSTER].)
No Go to the next step.
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