z
Measure voltage between the
following terminals:
{
MAF sensor terminal C
(wiring harness-side) and
body ground
{
MAF sensor terminal D
(wiring harness-side) and
body ground
z
Are there voltage B+?
No
Go to next step.
7
INSPECT MAF SENSOR SIGNAL
CIRCUIT FOR SHORT TO
GROUND
z
Turn the ignition switch off.
z
Disconnect the MAF/IAT sensor
and PCM connector.
z
Inspect for continuity between the
following circuits:
{
MAF sensor terminal C
(wiring harness-side) and
body ground
{
MAF sensor terminal D
(wiring harness-side) and
body ground
z
Are there continuity?
Yes
Repair or replace the malfunctioning part,
then go to Step 10.
No
Go to next step.
8
INSPECT PCM CONNECTOR FOR
POOR CONNECTION
z
Turn the ignition switch off.
z
Disconnect the MAF/IAT sensor
connector.
z
Inspect for poor connection (such
as damaged/pulled-out pins,
corrosion).
z
Are there any malfunction?
Yes
Repair or replace the malfunctioning part,
then go to Step 10.
No
Go to next step.
9
INSPECT MAF SENSOR CIRCUIT
FOR OPEN CIRCUIT
z
Turn the ignition switch off.
z
Disconnect the PCM connector.
z
Disconnect the MAF/IAT sensor
connector.
Yes
Go to the next step.
No
Repair or replace suspected part, then go to
the next step.
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
Microsoft
Sunday, November 15, 2009 9:26:29 AM
Page 60
© 2005 Mitchell Repair Information Company, LLC.