Mazda CX-9 Grand Touring 2009 Manual page 1832

2008 BODY & ACCESSORIES Instrumentation/Driver Info - Mazda CX-9
Fig. 12: Identifying Topmost & Bottommost Positions Of Float & Torque Specifications
Courtesy of MAZDA MOTORS CORP.
If they are not as indicated, replace the fuel gauge sender unit or fuel gauge sender sub-unit.
OIL PRESSURE SWITCH INSPECTION
1. Verify that the oil pressure warning light illuminates when the ignition switch is at the ON position.
2. Verify that the oil pressure warning light goes out when the engine is started.
If the oil pressure warning light does not illuminate or remains illuminated, inspect the BCM and
related wiring harness.
If the BCM and related wiring harness are normal, inspect the oil pressure. (See OIL
PRESSURE INSPECTION [MZI-3.7] .)
HORN REMOVAL/INSTALLATION
1. Disconnect the negative battery cable.
2. Slightly bend back the mudguard.
3. Remove in the order indicated in the table.
2008 Mazda CX-9 Grand Touring
If the oil pressure is normal, replace the oil pressure switch.