Mazda RX-8 Workshop Manual page 3267

4 Disconnect the negative battery cable.
Measure the resistance between the DLC-2 terminals
F and E.
Is the resistance below 60 ohms?
5 Inspect DLC-2 terminals F and E for followings:
Is there any malfunction?
6 Connect the M-MDS to DLC-2.
Perform KOEO and KOER self-test and retrieve
continuous memory DTC for PCM.
Is there any DTC displayed?
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?
8 Disconnect the negative battery cable.
Measure the resistance between the instrument
cluster connector terminals 1J and 1L.
Is the resistance 114—126 ohms?
Short circuit between terminals F
and E
Short to power supply
Short to GND
YesGo to the next step.
No Go to Step 7.
YesInspect the wiring harness
and CAN system-related
module.
Repair or replace the
malfunctioning part.
No Replace the instrument
cluster.
YesPerform the appropriate DTC
troubleshooting procedure.
(See DTC TABLE [13B-
MSP].)
No Go to the next step.
YesGo to the next step.
No Repair or replace the
terminal.
YesInspect the wiring harness
and CAN system-related
module.
Repair or replace the
malfunctioning part.
No Replace the instrument
cluster.