Mazda CX-9 Grand Touring. Manual — part 274
DTC P0461 [MZI-3.7]
DTC P0461 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
DIAGNOSTIC PROCEDURE
DTC P0461 (MZI-3.7) DIAGNOSTIC PROCEDURE
Is other DTCs present?
5
VERIFY TROUBLESHOOTING OF
DTC P0460 HAS BEEN COMPLETED
Verify that all disconnected
connectors reconnected.
Clear the DTC from the PCM
memory using the M-MDS.
Perform the "KOEO/KOER self-
test". (See KOEO/KOER SELF
TEST [MZI-3.7].)
Is the PENDING CODE for the
DTC present?
Yes
Replace the PCM, then go to the next step. (See
PCM REMOVAL/INSTALLATION [MZI-
3.7] .)
No
Go to the next step.
6
VERIFY AFTER REPAIR
PROCEDURE
Perform the "AFTER REPAIR
PROCEDURE". (See AFTER
REPAIR PROCEDURE [MZI-
3.7].)
Are any DTCs present?
Yes
Go to the applicable DTC inspection. (See DTC
TABLE [MZI-3.7].)
No
Troubleshooting completed.
DTC P0461
Fuel gauge sender unit range/performance problem
DETECTION
CONDITION
The PCM monitors the fuel level input communications network message for a
concern. The test fails when the fuel level input signal repeatedly moves in and
out of range, exceeding the minimum or maximum allowable calibrated
parameters for a specified fuel fill percentage in the fuel tank.
POSSIBLE
CAUSE
Excessive electrical noise
Fuel level input signal circuit malfunction
STEP
INSPECTION
ACTION
1
VERIFY FREEZE FRAME DATA
HAS BEEN RECORDED
Has FREEZE FRAME DATA been
recorded?
Yes Go to the next step.
No
Record the FREEZE FRAME DATA on the repair
order, then go to the next step.
VERIFY REPAIR INFORMATION
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:38 AM
Page 229
© 2005 Mitchell Repair Information Company, LLC.
DTC P0462 [MZI-3.7]
2
AVAILABILITY
Verify related Service Bulletins
availability.
Is any related Service Bulletins
available?
Yes
Perform repair or diagnosis according to the
available Service Bulletins. If the vehicle is not
repaired, go to the next step.
No
Go to the next step.
3
VERIFY RELATED PENDING CODE
OR STORED DTCs
Turn the ignition switch off then to
the ON position (Engine off).
Verify related pending code or
stored DTCs.
Is other DTCs present?
Yes
Go to the appropriate DTC troubleshooting. (See
DTC TABLE [MZI-3.7].)
No
Go to the next step.
4
VERIFY STORED DTC IN
INSTRUMENT CLUSTER
Turn the ignition switch off then to
the ON position (Engine off).
Verify stored DTCs in instrument
cluster.
Is other DTCs present?
Yes
Go to the appropriate DTC inspection. (See DTC
TABLE [INSTRUMENT CLUSTER] .)
No
Go to the next step.
5
VERIFY TROUBLESHOOTING OF
DTC P0461 HAS BEEN COMPLETED
Verify that all disconnected
connectors reconnected.
Clear the DTC from the PCM
memory using the M-MDS.
Perform the "KOEO/KOER self-
test". (See KOEO/KOER SELF
TEST [MZI-3.7].)
Is the PENDING CODE for the
DTC present?
Yes
Replace the PCM, then go to the next step. (See
PCM REMOVAL/INSTALLATION [MZI-
3.7] .)
No
Go to the next step.
6
VERIFY AFTER REPAIR
PROCEDURE
Perform the "AFTER REPAIR
PROCEDURE". (See AFTER
REPAIR PROCEDURE [MZI-
3.7].)
Are any DTCs present?
Yes
Go to the applicable DTC inspection. (See DTC
TABLE [MZI-3.7].)
No
Troubleshooting completed.
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:38 AM
Page 230
© 2005 Mitchell Repair Information Company, LLC.
DTC P0462 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
DIAGNOSTIC PROCEDURE
DTC P0462 (MZI-3.7) DIAGNOSTIC PROCEDURE
DTC P0462
Fuel gauge sender unit circuit low input
DETECTION
CONDITION
The PCM) monitors the fuel level input communications network message for
a concern. The test fails if the fuel level input signal is less than the minimum
allowable calibrated parameter for a specified fuel-fill percentage in the fuel
tank.
POSSIBLE
CAUSE
Empty fuel tank
Fuel pump malfunction
Incorrectly installed fuel gauge
Instrument cluster malfunction
Fuel gauge malfunction
Fuel level input signal circuit malfunction
STEP
INSPECTION
ACTION
1
VERIFY FREEZE FRAME DATA
HAS BEEN RECORDED
Has FREEZE FRAME DATA been
recorded?
Yes Go to the next step.
No
Record the FREEZE FRAME DATA on the repair
order, then go to the next step.
2
VERIFY REPAIR INFORMATION
AVAILABILITY
Verify related Service Bulletins
availability.
Is any related Service Bulletins
available?
Yes
Perform repair or diagnosis according to the
available Service Bulletins. If the vehicle is not
repaired, go to the next step.
No
Go to the next step.
3
VERIFY RELATED PENDING CODE
OR STORED DTCs
Turn the ignition switch off then to
the ON position (Engine off).
Verify related pending code or
stored DTCs.
Is other DTCs present?
Yes
Go to the appropriate DTC troubleshooting. (See
DTC TABLE [MZI-3.7].)
No
Go to the next step.
4
VERIFY STORED DTC IN
INSTRUMENT CLUSTER
Turn the ignition switch off then to
the ON position (Engine off).
Verify stored DTCs in instrument
Yes
Go to the appropriate DTC inspection. (See DTC
TABLE [INSTRUMENT CLUSTER] .)
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:38 AM
Page 231
© 2005 Mitchell Repair Information Company, LLC.
DTC P0463 [MZI-3.7]
DTC P0463 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
DIAGNOSTIC PROCEDURE
DTC P0463 (MZI-3.7) DIAGNOSTIC PROCEDURE
cluster.
Is other DTCs present?
No
Go to the next step.
5
VERIFY TROUBLESHOOTING OF
DTC P0462 HAS BEEN COMPLETED
Verify that all disconnected
connectors reconnected.
Clear the DTC from the PCM
memory using the M-MDS.
Perform the "KOEO/KOER self-
test". (See KOEO/KOER SELF
TEST [MZI-3.7].)
Is the PENDING CODE for the
DTC present?
Yes
Replace the PCM, then go to the next step. (See
PCM REMOVAL/INSTALLATION [MZI-
3.7] .)
No
Go to the next step.
6
VERIFY AFTER REPAIR
PROCEDURE
Perform the "AFTER REPAIR
PROCEDURE". (See AFTER
REPAIR PROCEDURE [MZI-
3.7].)
Are any DTCs present?
Yes
Go to the applicable DTC inspection. (See DTC
TABLE [MZI-3.7].)
No
Troubleshooting completed.
DTC P0463
Fuel gauge sender unit circuit high input
DETECTION
CONDITION
The PCM monitors the fuel level input communications network message-for a
concern. The test fails if the fuel level input signal is more than the maximum
allowable calibrated parameter for a specified fuel-fill percentage in the fuel
tank.
POSSIBLE
CAUSE
Fuel pump malfunction
Incorrectly installed fuel gauge
Instrument cluster malfunction
Fuel level input signal circuit malfunction
Overfilled fuel tank
Fuel gauge malfunction
STEP
INSPECTION
ACTION
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:38 AM
Page 232
© 2005 Mitchell Repair Information Company, LLC.
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