Mazda RX-8 Manual page 919

Turn the ignition switch to the ON
•
position (Engine off).
Measure the voltage between the
•
following circuits:
Throttle body terminal A (wiring
harness-side) and body GND
Throttle body terminal B (wiring
harness-side) and body GND
Is the voltage B+ ?
•
INSPECT THROTTLE ACTUATOR
Inspect the throttle actuator.
•
6
(See Resistance Inspection .)
Is there any malfunction ?
•
INSPECT PCM CONNECTOR FOR POOR
CONNECTION
Turn the ignition switch off.
•
7
Disconnect the PCM connector.
•
Inspect for poor connection (such as
•
damaged/pulled-out pins, corrosion).
Is there any malfunction?
•
INSPECT THROTTLE ACTUATOR
CIRCUIT FOR OPEN CIRCUIT
Turn the ignition switch off.
•
Inspect for continuity between the
•
following circuits:
Throttle body terminal A (wiring
8
harness-side) and PCM terminal
1B (wiring harness-side)
Throttle body terminal B (wiring
harness-side) and PCM terminal
1C (wiring harness-side)
Is there continuity?
•
VERIFY TROUBLESHOOTING OF DTC
9
P2106 COMPLETED
No Go to the next step.
Replace the throttle body, then go to Step 9.
Yes
(See INTAKE-AIR SYSTEM
REMOVAL/INSTALLATION .)
No Go to the next step.
Yes Repair or replace the terminal, then go to Step 9.
No Go to the next step.
Yes Go to the next step.
Repair or replace the wiring harness for a
No
possible open circuit, then go to the next step.
Replace the PCM, then go to the next step.
Yes
(See PCM REMOVAL/INSTALLATION .)
(w) Engine Diagnostics & Control
Page 356