DIAGNOSTIC PROCEDURE
DIAGNOSTIC PROCEDURE
STEP
INSPECTION
ACTION
1
Start the engine, and drive the vehicle.
Does the speedometer needle move
smoothly?
Does the speedometer needle indicate
correct speed?
Yes Troubleshooting completed.
No
Go to the next step.
2
Do the tachometer, the water temperature
gauge, and the oil pressure gauge operate
normally?
Yes Go to the next step.
No
Go to Step 4.
3
Start the instrument cluster input/output check
mode.
Inspect the speedometer using the check code
12.
Is the speedometer normal?
Yes
Inspect the ABS HU/CM, DSC
HU/CM, or connectors.
No
Replace the instrument cluster.
4
Start the engine.
Does the ABS warning light turn off?
Yes Inspect the PCM or connectors.
No
Replace the instrument cluster.
5
Disconnect the negative battery cable.
Measure the resistance between the DLC-2
terminals F and E.
Is the resistance
54-66 ohms
?
Yes Go to the next step.
No
Go to Step 7.
6
Disconnect the negative battery cable.
Inspect the DLC-2 terminals F and E for short
to power supply or GND.
Is there any malfunction?
Yes
Inspect the wiring harness and CAN
system-related module. Repair or
replace the malfunctioning part.
No
Replace the instrument cluster.
7
Turn the ignition switch off.
Inspect the instrument cluster connector
terminals for poor connection (such as
damaged/pulled-out pins, and corrosion).
Are the terminals normal?
Yes Go to the next step.
No
Repair or replace the terminal.
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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