5
INSPECT PCV VALVE HEATER
CONTROL AND PCV VALVE
HEATER FITTING CIRCUIT FOR
SHORT TO POWER SUPPLY
z
Turn the ignition switch to the ON
position (Engine 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 voltage B+?
Yes
Repair or replace suspected part, then go to
Step 10.
No
Go to the next step.
6
INSPECT PCV VALVE HEATER
CONTROL AND PCV VALVE
HEATER FITTING CIRCUIT FOR
SHORT TO GROUND
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 10.
No
Go to the next step.
7
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 10.
No
Go to the next step.
8
INSPECT PCV VALVE HEATER
CONTROL AND PCV VALVE
HEATER FITTING FOR OPEN
CIRCUIT
Yes
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 9:26:34 AM
Page 268
© 2005 Mitchell Repair Information Company, LLC.