{
PCM terminal 2AH-TP
sensor terminal E
{
PCM terminal 2Z-TP sensor
terminal F
13
Does the engine start with the throttle
valve closed?
Yes
Go to Step 29.
No
Go to the next step.
14
Will the engine start and run smoothly
at part throttle?
Yes
Inspect the electronic throttle control
system operation.
(See
ENGINE CONTROL SYSTEM
OPERATION INSPECTION [MZI-
3.5]
.)
No
Go to the next step.
15
Connect the M-MDS to the DLC-2.
Access RPM PID.
Is RPM PID indicating the engine
speed when cranking the engine?
Yes
Go to the next step.
No
Inspect for the following:
z
Open or short circuit in CKP
sensor
z
Open or short circuit in wiring
harness between CKP sensor
terminal A and PCM terminal 2P
z
Open or short circuit in wiring
harness between CKP sensor
terminal B and PCM terminal 2T
z
Open or short circuit in CKP
sensor wiring harnesses
If CKP sensor and wiring harness are
normal, go to the next step.
16
Visually inspect the CKP sensor and
teeth of crankshaft pulley.
Are CKP sensor and teeth of
crankshaft pulley normal?
Yes
Go to the next step.
No
Replace the malfunctioning part.
17
Inspect the ignition coil related wiring
harness condition (intermittent open or
short circuit) for all cylinders. Are
wiring harness conditions normal?
Yes
Go to the next step.
No
Repair the wiring harnesses.
18
Perform the spark test.
(See
ENGINE CONTROL SYSTEM
OPERATION INSPECTION [MZI-
3.5]
.)
Is strong blue spark visible at each
cylinder?
Yes
Go to the next step.
No
Repair or replace the malfunctioning
part according to spark test result.
19
Inspect the spark plug conditions.
Yes
Spark plug is wet or covered with
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE Symptom Troubleshooting (MZI-3.5) - CX-9
Microsoft
Sunday, November 15, 2009 9:27:37 AM
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