Mazda CX-9 Grand Touring 2009 Manual page 915

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Are any DTC present?
DTC P0102 [MZI-3.7]
DTC P0102 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
DTC P0102 MAF circuit low input
DETECTION
CONDITION
POSSIBLE
CAUSE
2008 Mazda CX-9 Grand Touring
The MAF sensor circuit is monitored by the PCM for low air flow (or voltage) input
through the CCM. If during KOER the air flow (or voltage) changes below a
minimum calibrated limit, the test fails.
Connector or terminal malfunction
Open circuit wiring harness between MAF sensor terminal A and main relay No.1
terminal D
Open circuit wiring harness between MAF sensor terminal C and PCM terminal 1AJ
Open circuit wiring harness between MAF sensor terminal D and PCM terminal 1
AN
Open circuit wiring harness between MAF sensor terminal B and body ground
Short to ground circuit between MAF sensor terminal D and PCM terminal 1 AN
Intake air leak (near the MAF sensor)
A closed throttle indication
MAF sensor malfunction