Mazda CX-9 Grand Touring 2007 Manual page 494

2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
Are any DTCs present?
DTC P0230 [MZI-3.5]
DTC P0230 (MZI-3.5) DETECTION CONDITION AND POSSIBLE CAUSES
DTC P0230
DETECTION
CONDITION
POSSIBLE CAUSE
2007 Mazda CX-9 Grand Touring
FP primary circuit
The PCM monitors the fuel pump circuit output from the PCM. The test fails whe
fuel pump output is commanded ON (grounded) and excessive current draw is det
on the fuel pump circuit. The test also fails when the fuel pump output is comman
OFF and voltage is not detected on the fuel pump circuit. The PCM expects to det
vehicle power voltage coming through the fuel pump relay coil to the fuel pump c
Fuel pump relay malfunction
Connector or terminal malfunction
Open circuit wiring harness between fuel pump relay terminal E and PCM termina
Short to ground circuit between fuel pump relay terminal E and PCM terminal 1V
Open circuit wiring harness between ignition switch and fuel pump relay terminal
PCM malfunction