Mazda RX-8 Manual page 2000

DTC 09:ER20
DTC 09:Er20
DETECTION
CONDITION
POSSIBLE CAUSE
Diagnostic procedure
STEP INSPECTION
Remove the ROOM 15 A fuse and ACC
7.5 A fuse.
1
Are the fuses normal?
Measure the battery voltage.
2
Is the voltage between 8.5    16 V ?
3
Power supply circuit of base unit
Voltage detected at base unit terminals 1B and 1R is less than 8.5 V , or
•
more than 16 V (must not be 16V) .
Weak battery
•
Malfunction in wiring harness between battery and base unit
•
Yes Go to the next step.
No Replace the fuse.
Yes Go to the next step.
No
Yes Go to the next step.
ACTION
Battery malfunction
Inspect the charge/discharge system.
o
(w) RX-8 Body
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