5
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
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
Yes Go to the next step.
No
Repair or replace suspected part, then go to
Step 10.
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:39 AM
Page 251
© 2005 Mitchell Repair Information Company, LLC.
