Mazda CX-9 Grand Touring 2009 Manual page 1080

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 TANKE PRESSURE
SENSOR CONNECTOR FOR POOR
CONNECTION
Turn the ignition switch off.
3
Disconnect the fuel tank pressure
sensor connector.
Inspect for poor connection (such as
damaged/pulled-out pins, corrosion).
Are there any malfunction?
VERIFY FUEL TANK PRESSURE
SIGNAL CIRCUIT FOR SHORT TO
GROUND
Turn the ignition switch off.
4
Inspect for continuity between fuel
tank pressure sensor terminal A
(wiring harness-side) and body
ground.
Is there continuity?
INSPECT FUEL TANKE PRESSURE
SENSOR SIGNAL CIRCUIT AND
GROUND CIRCUIT FOR SHORT
EACH OTHER
Turn the ignition switch off.
Disconnect the fuel tank pressure
5
sensor and PCM connector.
Measure resistance between PCM
terminal 1AB (wiring harness-side)
and PCM terminal 1AL (wiring
harness-side)
Is the resistance more than 10
kilohms?
INSPECT FUEL TANKE PRESSURE
SENSOR
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
7.
No
Repair or replace suspected part, then go to Step
Yes
7.
No
Yes Go to the next step.
Repair or replace suspected part, then go to Step
No
Yes Go to the next step.
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.
7.