Mazda CX-9 Grand Touring 2009 Manual page 1084

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