Mazda RX-8 Workshop Manual page 1897

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2011 - RX-8 - Transmission/Transaxle
DTC P0819 [SJ6A-EL]
DTC P0819 Manual switch/up switch/down switch circuit malfunction (open circuit/short circuit)
DETECTION
CONDITION
POSSIBLE CAUSE
M range switch circuit malfunction
M range switch remains on for 2 s or more except in D range.
Up switch or down switch circuit malfunction
When all of the following conditions are met:
M range switch off.
Except D range
Up or down switch remains on for 10 s or more.
Diagnostic support note:
The MIL does not illuminate if the TCM detects the above malfunction condition during the first
drive cycle.
A PENDING CODE is not available.
FREEZE FRAME DATA is available.
The AT warning light illuminates.
The DTC is stored in the TCM memory.
TCM connector or terminal malfunction
Selector lever component connector or terminal malfunction
Short to ground in wiring harness between selector lever component terminal Band TCM
terminal 2G
Short to ground in wiring harness between selector lever component terminal D and TCM
terminal 2J
Short to ground in wiring harness between selector lever component terminal F and TCM
terminal 2F
M range switch malfunction
Up switch malfunction
Down switch malfunction
Open circuit in wiring harness between selector lever component terminal A and ground
Open circuit in wiring harness between selector lever component terminal B and TCM terminal
2G
Open circuit in wiring harness between selector lever component terminal D and TCM terminal
2J