6
CIRCUIT
z
Inspect for continuity between the
following circuits:
{
Fuel tank pressure sensor
connector terminal A (harness-
side) and PCM connector
terminal 1AB.
{
Fuel tank pressure sensor
connector terminal B (harness-
side) and PCM connector
terminal 1AL
z
Are there continuity?
Yes Go to the next step.
No
Repair or replace suspected part, then go to Step
9.
7
INSPECT FUEL TANK PRESSURE
SENSOR SIGNAL CIRCUIT AND
POWER CIRCUIT FOR SHORT EACH
OTHER
z
Turn the ignition switch off.
z
Disconnect the fuel tank pressure
sensor and PCM connector.
z
Measure resistance between PCM
connector terminal 1U (harness-side)
and CM connector terminal 1AB
(harness-side).
z
Is the resistance more than 10
kilohms?
Yes Go to the next step.
No
Repair or replace suspected part, then go to Step
9.
8
INSPECT FUEL TANK PRESSURE
SENSOR
z
Inspect the fuel tank pressure sensor.
(See
FUEL TANK PRESSURE
SENSOR INSPECTION [MZI-
3.7]
.)
z
Is the fuel tank pressure sensor
normal?
Yes Go to the next step.
No
Replace the evaporative hose component, then go
to the next step. (See
FUEL TANK
REMOVAL/INSTALLATION [MZI-3.7]
.)
9
VERIFY TROUBLESHOOTING OF
DTC P0453 COMPLETED
z
Make sure to reconnect all
disconnected connectors.
z
Turn ignition switch to the ON
position (Engine off).
z
Clear the DTC from the PCM
Yes
Replace the PCM, then go to the next step. (See
PCM REMOVAL/INSTALLATION [MZI-
3.7]
.)
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:38 AM
Page 220
© 2005 Mitchell Repair Information Company, LLC.
