Mazda CX-9 Grand Touring 2009 Manual page 1083

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
INFORMATION AVAILABILITY
Verify related Service Bulletins
and/or on-line repair information
2
availability.
Is any related repair information
available?
INSPECT FUEL TANK PRESSURE
SENSOR CONNECTION FOR POOR
CONNECTION
Turn the ignition switch off.
3
Disconnect fuel tank pressure sensor
connector.
Inspect for poor connection (such as
damaged/pulled-out pins, corrosion).
Are there any malfunction?
VERIFY FUEL TANK PRESSURE
SENSOR SIGNAL CIRCUIT FOR
SHORT TO POWER SUPPLY
Turn the ignition switch to the ON
position (Engine off).
Measure the voltage between the
following terminals:
4
Fuel tank pressure sensor
terminal A (wiring harness-
side) and body ground.
Fuel tank pressure sensor
terminal C (wiring harness-
side) and body ground.
Are there voltage B+?
INSPECT PCM CONNECTOR FOR
POOR CONNECTION
Turn the ignition switch off.
Disconnect the fuel tank pressure
5
sensor and PCM connector.
Inspect for poor connection (such as
damaged/pulled-out pins, corrosion).
Is there any malfunction?
VERIFY FUEL TANK PRESSURE
SENSOR CIRCUIT FOR OPEN
2008 Mazda CX-9 Grand Touring
Perform the repair or diagnosis according to the
available repair information.
Yes
No
Repair or replace suspected part, then go to Step
Yes
9.
No
Repair or replace suspected part, then go to Step
Yes
9.
No
Repair or replace suspected part, then go to Step
Yes
9.
No
If the vehicle is not repaired, go to the next
step.
Go to the next step.
Go to the next step.
Go to the next step.
Go to the next step.