Dtc P0100, P0102, Or P0103 - Suzuki XL7 2007 Service Manual

DTC P0100, P0102, or P0103

Diagnostic Instructions
• Perform the "Diagnostic System Check - Vehicle Diagnostic Information: " prior to using this diagnostic procedure.
• Review "Strategy Based Diagnosis: " for an overview of the diagnostic approach.
• "Diagnostic Procedure Instructions - Vehicle Diagnostic Information: " provides an overview of each diagnostic
category.
DTC Descriptors
DTC P0100: Mass Air Flow (MAF) Sensor Circuit
DTC P0102: Mass Air Flow (MAF) Sensor Circuit Low Frequency
DTC P0103: Mass Air Flow (MAF) Sensor Circuit High Frequency
Diagnostic Fault Information
Circuit
Ignition 1 Voltage
MAF Sensor Signal
Low Reference
Circuit/System Description
The mass air flow (MAF) sensor is located in the air
intake duct. The MAF sensor is an airflow meter that
measures the amount of air that enters the engine. The
MAF sensor uses a hot film that is cooled by air flowing
past the sensing film as air enters the engine. The
amount of cooling is proportional to the amount of the air
flow. As the air flow increases, more current is required
in order to maintain the hot film at a constant
temperature. The engine control module (ECM) uses the
MAF sensor in order to provide the correct fuel delivery
for all operating conditions.
Conditions for Running the DTC
• The engine is operating.
• The ignition voltage is more than 10.5 volts.
• DTC P0100, P0102 and P0103 run continuously once
the above conditions are met for 1 second.
Engine General Information and Diagnosis:
Short to High
Ground Resistance
P0100 P0100
P0100 P0102
— P0102
Conditions for Setting the DTC
P0100
• The ECM detects that the MAF sensor signal is 0.0
Hz.
• The condition exists for 4 seconds or for a cumulative
of 50 seconds.
P0102
• The ECM detects that the MAF sensor signal is less
than 1135 Hz.
• The condition exists for 4 seconds or for a cumulative
of 50 seconds.
P0103
• The ECM detects that the MAF sensor signal is more
than 15,152 Hz.
• The condition exists for 4 seconds or for a cumulative
of 50 seconds.
Action Taken When the DTC Sets
DTCs P0100, P0102, and P0103 are Type B DTCs.
Conditions for Clearing the DTC
DTCs P0100, P0102, and P0103 are Type B DTCs.
Short to
Open
Voltage
P0100 —
P0100 P0102
P0100 —
1A-66
Signal
Performance
P0101
P0101
P0101