NO. 5 BRAKE SYSTEM WARNING LIGHT ILLUMINATES
BRAKE SYSTEM WARNING LIGHT ILLUMINATES POSSIBLE CAUSE TABLE
DIAGNOSTIC PROCEDURE
DIAGNOSTIC PROCEDURE
6
No
Repair or replace the terminal.
7
Disconnect the negative battery cable.
Measure the resistance between the instrument
cluster connector terminals 1J and 1L.
Is the resistance
114-126 ohms
?
Yes
Inspect the wiring harness and CAN
system-related module. Repair or
replace the malfunctioning part.
No
Replace the instrument cluster.
5
Brake system warning light illuminates
POSSIBLE CAUSE
ABS HU/CM or DSC HU/CM malfunction
Brake fluid level sensor malfunction
Parking brake switch malfunction
Instrument cluster malfunction
Connector or pin malfunction
Short circuit in wiring harness between CAN-L, CAN-H and GND
Open circuit in CAN wiring harness (CAN-L, CAN-H)
CAN wiring harness (CAN-L, CAN-H) short each other
STEP
INSPECTION
ACTION
1
Start the engine.
Release the parking brake.
Does the brake system warning light turn off?
Yes Troubleshooting completed.
No
Go to the next step.
2
Are there a number of warning lights
illuminated?
Yes Go to Step 5.
No
Go to the next step.
3
Does the brake fluid need replenishment?
Yes Add brake fluid.
No
Go to the next step.
Start the instrument cluster input/output check
mode.
Yes Inspect the ABS HU/CM, DSC
HU/CM, brake fluid level sensor,
2007 Mazda MX-5 Miata Sport
2007 ACCESSORIES & BODY, CAB Symptom Troubleshooting (Instrument Cluster) - MX-5 Miata
Microsoft
Thursday, July 09, 2009 3:31:09 PM
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