Mazda CX-9 Grand Touring 2009 Manual page 1329

2008 ENGINE Symptom Troubleshooting (MZI-3.7) - Mazda CX-9
Connect the M-MDS to the DLC-2.
Access the TP1, TP2 PID. Crank the
12 engine with accelerator pedal released.
Are the TP1, TP2 PID indicates the
closed throttle position?
Does the engine start with the throttle
13
valve closed?
Will the engine start and run smoothly at
14
part throttle?
Connect the M-MDS to the DLC-2.
Access RPM PID.
15
Is RPM PID indicating the engine speed
when cranking the engine?
2008 Mazda CX-9 Grand Touring
Yes Go to the next step.
No
Yes Go to Step 28.
No
Inspect the electronic throttle control system
operation.
Yes
(See ENGINE CONTROL SYSTEM
OPERATION INSPECTION [MZI-3.7].)
No
Yes Go to the next step.
No
PCM terminal 1AD-APP sensor
terminal G
PCM terminal 1AG-APP sensor
terminal H
Inspect for the following:
TP sensor
Wiring harnesses and connectors for
following:
PCM terminal 2BO-TP sensor
terminal A
PCM terminal 2BR-TP sensor
terminal B
PCM terminal 2AD-TP sensor
terminal C
PCM terminal 2D-TP sensor
terminal D
PCM terminal 2AH-TP sensor
terminal E
PCM terminal 2Z-TP sensor
terminal F
Go to the next step.
Go to the next step.
Inspect for the following:
Open or short circuit in CKP sensor
Open or short circuit in wiring harness
between CKP sensor terminal A and
PCM terminal 2P
Open or short circuit in wiring harness
between CKP sensor terminal B and
PCM terminal 2T
Open or short circuit in CKP sensor
wiring harnesses