5
z
Turn the ignition switch off.
z
Inspect for continuity between the
following circuit:
{
PCV valve heater control terminal
B (wiring harness-side) and body
ground
{
PCV valve heater fitting terminal B
(wiring harness-side) and body
ground
z
Are there continuity?
Yes Repair or replace suspected part, then go to
Step 9.
No
Go to the next step.
6
INSPECT PCM CONNECTOR FOR POOR
CONNECTION
z
Turn the ignition switch off.
z
Disconnect PCM connector.
z
Inspect for poor connection (such as
damaged/pulled-out pins, corrosion).
z
Are there any malfunction?
Yes
Repair or replace suspected part, then go to
Step 9.
No
Go to the next step
7
INSPECT PCV VALVE HEATER
CONTROL AND PCV VALVE HEATER
FITTING FOR OPEN CIRCUIT
z
Inspect for continuity between the
following circuit:
{
PCV valve heater control terminal
B (wiring harness-side) and PCM
terminal 2BL (wiring harness-side)
{
PCV valve heater fitting B (wiring
harness-side) and PCM terminal
2AU (wiring harness-side)
z
Are there continuity?
Yes Go to the next step.
No
Repair or replace suspected part, then go to
Step 9.
8
INSPECT PCV VALVE HEATER
CONTROL AND PCV VALVE HEATER
FITTING
z
Inspect the PCV valve heater control and
PCV valve heater fitting.
(See
POSITIVE CRANKCASE
VENTILATION (PCV) VALVE
INSPECTION [MZI-3.7]
.)
(See
POSITIVE CRANKCASE
Yes Replace the malfunctioning part, then go to
the next step.
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:41 AM
Page 341
© 2005 Mitchell Repair Information Company, LLC.
