Mazda CX-7 2007 Workshop Manual page 820

NO.1 ANY OF THE FOLLOWING LIGHTS DO NOT ILLUMINATE WHEN IGNITION SWITCH TURNED TO ON
POSITION: (ABS WARNING LIGHT, BRAKE SYSTEM WARNING LIGHT, DSC INDICATOR LIGHT AND/OR
TCS OFF LIGHT)
Any of the following lights do not illuminate when the ignition switch is turned to the ON position:
1
(ABS warning light, BRAKE system warning light, DSC indicator light and/or TCS OFF light).
[TROUBLESHOOTING HINTS]
• Inspect each light in the instrument cluster for malfunction
• Poor connection at DSC HU/CM connector
Diagnostic procedure
STEP
1 INSPECT FOR DTCS IN DSC HU/CM
• Inspect the DTC for the DSC ON-BOARD
DIAGNOSTIC SYSTEM.
• Have DTCs been stored in memory?
2 INSPECT WHETHER MALFUNCTION IS IN
INSTRUMENT CLUSTER SYSTEM OR OTHER
SYSTEM
• Do other warning and indicator lights
illuminate when the ignition switch is turned
to the ON position?
3 VERIFY THAT DSC HU/CM CONNECTOR IS
CONNECTED
• Is the DSC HU/CM securely connected?
4 VERIFY THAT DSC HU/CM CONNECTOR
TERMINAL OR RELATED CONNECTOR
TERMINALS ARE CONNECTED
• Are DSC HU/CM connector terminal,
instrument cluster connector terminal, or
related connector terminals securely
connected?
5 INSPECT INSTRUMENT CLUSTER
• Inspect the instrument cluster.
(See 04-02-3 ON-BOARD DIAGNOSIS.)
• If the instrument cluster normal
End Of Sie
04-03–8
SYMPTOM TROUBLESHOOTING
INSPECTION
Yes Perform the applicable DTC inspection.
(See 04-02-3 ON-BOARD DIAGNOSIS.)
No Go to the next step.
Yes Go to the next step.
No Inspect or repair the instrument cluster (power supply
system, ground system).
Yes Go to the next step.
No Connect the DSC HU/CM connector securely, then go to the
next step.
Yes Go to the next step.
No Securely connect the DSC HU/CM connector terminal and
related connector terminals.
Yes Replace the DCS HU/CM.
(see 04-15-6 DSC HU/CM REMOVAL/INSTALLATION.)
No Replace the instrument cluster.
(See 04-02-3 ON-BOARD DIAGNOSIS.)
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