Mazda RX-8 Workshop Manual page 1876

INSPECT TR SWITCH CIRCUIT
3
Connect the TCM connector.
Turn the ignition switch to the ON position. (engine off)
Inspect the voltage between TCM terminal (wiring
harness-side) and body ground.
Are any of following terminal voltage turned on for even
a moment while shifting selector lever slowly from P
position to D range?
INSPECT TR SWITCH CIRCUIT
4
Are all terminal voltage 0 V in Step 3?
INSPECT TR SWITCH CIRCUIT
5
Are there two or more terminals where the voltage is
abnormal in Step 3?
6 INSPECT TCM CONNECTOR FOR POOR CONNECTION
Turn the ignition switch to the LOCK position.
Disconnect the TCM connector.
Inspect for poor connection at TCM terminals 2O, 2K, 2M
and 2N (such as damaged/pulled-out pins, corrosion).
TCM terminal 2O
P position: B+
Other positions and all
ranges: 0V
TCM terminal 2M
R position: B+
Other position and all
ranges: 0V
TCM terminal 2N
N position: B+
Other position and all
range: 0V
TCM terminal 2K
D range: B+
Other ranges and all
positions: 0V
YesGo to Step 13.
No Go to the next step.
YesGo to Step 10.
No Go to the next step.
YesAdjust the TR switch, then go to Step
13.
(See TRANSMISSION RANGE (TR)
SWITCH ADJUSTMENT
No Go to the next step.
YesRepair or replace the connector and/or
terminal, then go to Step 13.
No Go to the next step.
[SJ6A-EL].)