Mazda CX-9 Grand Touring 2009 Manual page 1328

2008 ENGINE Symptom Troubleshooting (MZI-3.7) - Mazda CX-9
Are all items normal?
Connect the M-MDS to the DLC-2.
Turn the ignition switch to the ON
10 position (Engine off).
Retrieve any DTCs.
Are there any DTCs displayed?
Connect the M-MDS to the DLC-2.
Access the APP1 and APP2, APP3
PIDs. Crank the engine with accelerator
11 pedal released.
Are the APP1 and APP2, APP3 PIDs
indicating that the accelerator pedal is in
the released position?
2008 Mazda CX-9 Grand Touring
DTC is displayed:
Communication error message is
displayed:
Inspect for the following:
Yes
No
Yes Go to the next step.
No
Go to the appropriate DTC inspection.
(See DTC TABLE [MZI-3.7] .)
Open circuit in wiring harness between
main relay and PCM terminal 1 BO or
1BJ
Open main relay GND circuit
Open or short circuit in wiring harness
between the DLC-2 and PCM terminal
1BL or 1BG
Main relay is stuck open.
Open or poor GND circuit (PCM
terminal 1D, 1J, 1BP, 1BK)
Poor connection of vehicle body GND
No DTC is displayed:
Go to the next step.
Inspect for the following:
APP sensor
Wiring harnesses and connectors for
following:
PCM terminal 1 AC-APP sensor
terminal B
PCM terminal 1 AH-APP sensor
terminal C
PCM terminal 1Y-APP sensor
terminal D
PCM terminal 1AK-APP sensor
terminal E
PCM terminal 1BA-APP sensor
terminal F