Mazda RX-8 Workshop Manual page 692

Does the RPM PID indicate the
engine speed during engine
cranking?
16 Visually inspect the eccentric
shaft position sensor and the
teeth of the pulse wheel.
Are the eccentric shaft position
sensor and the teeth of the pulse
wheel normal?
17 Inspect for cracks on the high-
tension leads.
(See HIGH-TENSION LEAD
INSPECTION [13B-MSP].)
Are there any cracks on the high-
tension leads?
18 Is a strong blue spark visible at
each disconnected high-tension
lead while cranking the engine?
Open or short circuit in eccentric shaft
position sensor
Open or short circuit between eccentric
shaft position sensor and PCM terminal
2AG or 2AP
Open or short circuit in eccentric shaft
position sensor harnesses
Yes Go to the next step.
No Repair or replace the malfunctioning part according to the
inspection results.
Yes Repair the suspected high-tension leads.
No Go to the next step.
Yes If the symptom occurs with the A/C on, go to Step 23.
If not, go to the next step.
No Inspect the following:
Open or short circuit in ignition coil
Open circuit in high-tension leads
Open circuit between ignition coil
connector GND terminal and body GND
Open circuit between ignition switch and
ignition coil
Open circuit between ignition coil terminal
A and PCM terminal 2AT, 2AX, 2AW or
2BA
If the eccentric shaft
position sensor and the
wiring harness are
normal, go to the next
step.