Mazda CX-9 Grand Touring 2007 Manual page 716

2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
5 INSPECT PCV VALVE HEATER
CONTROL AND PCV VALVE
HEATER FITTING CIRCUIT FOR
SHORT TO GROUND
Turn the ignition switch off.
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
Are there continuity?
6 INSPECT PCM CONNECTOR FOR
POOR CONNECTION
Turn the ignition switch off.
Disconnect PCM connector.
Inspect for poor connection (such
as damaged/pulled-out pins,
corrosion).
Are there any malfunction?
7 INSPECT PCV VALVE HEATER
CONTROL AND PCV VALVE
HEATER FITTING FOR OPEN
CIRCUIT
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)
Are there continuity?
8 INSPECT PCV VALVE HEATER
CONTROL AND PCV VALVE
HEATER FITTING
2007 Mazda CX-9 Grand Touring
Yes
No
Yes
No
Yes
No
Yes
Repair or replace suspected part, then go to
Step 9.
Go to the next step.
Repair or replace suspected part, then go to
Step 9.
Go to the next step
Go to the next step.
Repair or replace suspected part, then go to
Step 9.
Replace the malfunctioning part, then go
to the next step.