Mazda RX-8 Workshop Manual page 3281

4 Connect the M-MDS to DLC-2.
Access ECT PID of PCM.
Monitor the ECT PID while driving.
Does the ECT PID indicate appropriate value?
5 Start the engine.
Does the ABS warning light turn off?
6 Disconnect the negative battery cable.
Measure the resistance between the DLC-2
terminals F and E.
Is the resistance below 60 ohms?
7 Inspect DLC-2 terminals F and E for followings:
Is there any malfunction?
8 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?
9 Disconnect the negative battery cable.
Short circuit between terminals F
and E
Short to power supply
Short to GND
YesInspect the CAN system wiring
harness and connectors
followings.
PCM terminal
1AM and
instrument
cluster
terminal 1J
PCM terminal
1AI and
instrument
cluster
terminal 1L
No Inspect the ECT sensor or
connectors.
YesInspect the PCM or connectors.
No Replace the instrument cluster.
YesGo to the next step.
No Go to Step 8.
YesInspect the wiring harness and
CAN system-related module.
Repair or replace the
malfunctioning part.
No Replace the instrument cluster.
YesGo to the next step.
No Repair or replace the terminal.
YesInspect the wiring harness and