P1104

M : DTC P0101, P0102, P0103, P1104. MASS AIR FLOW SENSOR (MAF)

M1 : CHECK THE MAF SENSOR POWER SUPPLY

1. Turn the ignition switch to the OFF position.
2. Disconnect the MAF sensor electrical connector EN6.
3. Turn the ignition switch to the ON position.
4. Measure the voltage between the MAF sensor electrical connector EN6 pin 1 (GU) and GROUND.

Is the voltage less than 10 volts?
Yes
Goto M5

No
Goto M2

M2 : CHECK CONTINUITY OF THE MAF SENSOR GROUND CIRCUIT

1. Turn the ignition switch to the OFF position.
2. Disconnect the PCM electrical connector EN16.
3. Measure the resistance between the MAF sensor electrical connector EN6 pin 3 (GW) and the PCM electrical connector EN16 pin 44 (GW).

Is the resistance less than 5 ohms?
Yes
Goto M3

No
REPAIR the circuit. For additional information, refer to the wiring diagrams. CLEAR the DTCs. TEST the system for normal operation.

M3 : CHECK CONTINUITY OF THE MAF SENSOR GROUND CIRCUIT

1. Measure the resistance between the MAF sensor electrical connector EN6 pin 2 (BW) and the PCM electrical connector EN16 pin 45 and pin 46 (BW).

Is the resistance less than 5 ohms?
Yes
Goto M4

No
REPAIR the circuit. For additional information, refer to the wiring diagrams. CLEAR the DTCs. TEST the system for normal operation.

M4 : CHECK THE MAF SENSOR CIRCUIT FOR SHORT TO GROUND

1. Measure the resistance between the MAF sensor electrical connector EN6 pin 3 (GW) and GROUND.

Is the resistance greater than 10,000 ohms?
Yes
INSTALL a new MAF sensor. CLEAR DTCs. TEST the system for normal operation. If the DTC is repeated, INSTALL a new PCM. For additional information, Before replacing a PCM, contact Dealer technical support.

No
REPAIR the short to ground. For additional information, refer to the wiring diagrams. CLEAR the DTCs. TEST the system for normal operation.

M5 : CHECK FUSE 36 OF THE ENGINE COMPARTMENT FUSE BOX

1. Check the fuse.

Is the fuse OK?
Yes
Goto M7

No
Goto M6

M6 : CHECK FUSE 36 OF THE ENGINE COMPARTMENT FUSE BOX FOR A SHORT TO GROUND

1. Measure the resistance between electrical connector JB34 pin 93 of the engine compartment fuse box and GROUND.

Is the resistance less than 10,000 ohms?
Yes
REPAIR short to ground between the engine compartment fuse box and the MAF sensor. For additional information, refer to wiring diagrams. CLEAR the DTC. TEST the system for normal operation.

No
INSTALL a new fuse. Check the circuit for cause of fuse failure. CLEAR the DTC. TEST the system for normal operation.

M7 : CHECK THE POWER SUPPLY FROM FUSE 36 IN THE ENGINE COMPARTMENT FUSE BOX TO THE MAF SENSOR

1. Measure the voltage between the engine compartment fuse box electrical connector JB34 pin 93 and GROUND.

Is the voltage less than 10 volts?
Yes
REPAIR the circuit from the engine compartment fuse box to the MAF sensor. For additional information, refer to wiring diagrams. CLEAR the DTC. TEST the system for normal operation.

No
Recheck DTCs.