Honda ACCORD HYBRID 2005 Service Manual page 312

PGM-FI System
D T C T r o u b l e s h o o t i n g ( c o n t ' d )
DTC P0101: MAF sensor Range/Performance
Problem
NOTE: If DTC P1128, P1129, P2228, and/or P2229 are
stored at the same t i m e as DTC P0101, t r o u b l e s h o o t
those DTCs first, then recheck for DTC P0101.
1. Note this freeze data:
• Engine speed
• Vehicle speed
• MAP sensor
• MAF sensor
2. Check for v a c u u m leaks at these parts:
• PCV valve
• PCV hose
• Purge (PCS) line
• Throttle body
• Intake m a n i f o l d
• Brake booster hose
Are there any leaks?
Y E S
—Repair
or replace the d a m a g e d part(s), then
go to step 18.
N O — G o t o step 3.
3. Check for damage or looseness at the air tube in
the air cleaner.
Is it OK?
Y E S —Go to step 4.
NO —Reconnect or replace the air tube in the air
cleaner, then go to step 16.
4. Check for a dirty air cleaner.
Is it dirty?
Y E S — R e p l a c e the air cleaner element (see page
11 -382), then go to step 16.
N O — G o t o step 5.
5. Turn the ignition switch OFF.
6. Turn the ignition switch ON (II).
7. Check the MAF SENSOR in the DATA LIST w i t h the
HDS.
Is there about 0.2 gm/s or 0.5 V?
Y E S — G o t o step 8.
NO—Go to step 14.
8. Start the engine.
9. Vary the engine speed between 2,000 r p m and
3,000 r p m .
10. Check the MAF SENSOR in the DATA LIST w i t h the
HDS.
Does the reading change?
Y E S — G o to step 1 1 .
NO—Go to step 14.
11. Hold the engine speed at 3,000 r p m w i t h o u t load
(in Park or neutral) until the radiator fan comes on,
then let it idle.
12. Test-drive the vehicle for several minutes in the
range of the recorded freeze data.
13. M o n i t o r the OBD STATUS for DTC P0101 in the
DTCs MENU w i t h the HDS.
Does the screen indicate FAILED?
Y E S — G o t o step 14.
NO—If the screen indicates PASSED, intermittent
failure, system is OK at this t i m e . Check the poor
connections or loose t e r m i n a l s at the MAF sensor
and the PCM. If the screen indicates NOT
COMPLETED, go to step 12 and recheck.
11-72