5
OPERATION INSPECTION [MZI-
3.7]
.)
Does the electronic throttle control
system function properly?
No
Repair or replace the malfunctioning part
according to electronic throttle control
system operation inspection results.
6
Disconnect the vacuum hose between the
purge solenoid valve and the intake
manifold from purge solenoid valve side.
Plug opening end of vacuum hose.
Drive the vehicle.
Does the engine condition improve?
Yes
Inspect the evaporative emission control
system.
No
Go to the next step.
7
Connect the M-MDS to the DLC-2.
Access APP1, APP2, APP3, TP1, TP2,
MAF and VSS PIDs.
Monitor each PID while driving vehicle.
(See
PCM INSPECTION [MZI-3.7]
.)
Are PIDs normal?
Yes
Go to the next step.
No
APP1, APP2, APP3 PIDs:
Inspect the accelerator pedal position sensor.
TP1, TP2 PID:
Inspect TP sensor.
MAF PID:
Inspect MAF sensor.
VSS PID:
Inspect VSS.
8
Access and monitor BOO, TR PIDs.
Are PIDs values normal?
(See
PCM INSPECTION [MZI-3.7]
.)
Yes
Go to the next step.
No
If the BOO PID is not normal:
z
Inspect brake switch, and related
wiring harness for vibration or
intermittent open/short circuit.
If the TR PID is not normal:
z
Inspect TR switch and related wiring
harness for vibration or intermittent
open/short circuit.
9
z
Verify test results.
{
If normal, return to diagnostic index to service any additional symptoms.
(See
SYMPTOM DIAGNOSTIC INDEX [MZI-3.7]
.)
{
If malfunction remains, inspect related Service Bulletins and/or On-line Repair
Information and perform repair or diagnosis.
z
If vehicle is repaired, troubleshooting completed.
z
If vehicle is not repaired or additional diagnostic information is not available,
replace the PCM.
(See
PCM REMOVAL/INSTALLATION [MZI-3.7]
.)
2008 Mazda CX-9 Grand Touring
2008 ENGINE Symptom Troubleshooting (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:10:05 AM
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© 2005 Mitchell Repair Information Company, LLC.
