DTC P0726 ENGINE SPEED INPUT CIRCUIT PERFORMANCE
AT-501
[RE5F22A]
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AT
Revision: November 2006
2006 Altima
DTC P0726 ENGINE SPEED INPUT CIRCUIT PERFORMANCE
PFP:31036
Description
ECS009EQ
The engine speed signal is sent from the ECM to the TCM.
On Board Diagnosis Logic
ECS009ER
●
This is not an OBD-II self-diagnostic item.
●
Diagnostic trouble code “ENG SPD INP PERFOR” with CONSULT-II or 14th judgement flicker without
CONSULT-II is detected when malfunction is detected in engine speed signal, actual engine torque signal
or torque reduction signal that is output from ECM through CAN communication.
Possible Cause
ECS009ES
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Harness or connectors
(The signal circuit is open or shorted.)
●
ECM
DTC Confirmation Procedure
ECS009ET
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1.
Turn ignition switch “ON” and select “A/T” with “DATA MONI-
TOR” mode in CONSULT-II.
2.
Start engine.
3.
Drive vehicle and maintain the following conditions for at least
10 consecutive seconds.
VHCL/S SE-A/T: 10 km/h (6 MPH) or more
ACCELE ANGLE: More than 10 %
SLCT LVR POSI: “D” position
4.
If DTC is detected, go to
AT-501, "Diagnostic Procedure"
.
Diagnostic Procedure
ECS009EU
1.
CHECK DTC WITH ECM
With CONSULT-II
1.
Turn ignition switch “ON”. (Do not start engine.)
2.
Select “ENGINE” with “SELF-DIAG RESULTS” mode in CON-
SULT-II. Refer to
AT-462, "CONSULT-II Function (TCM)"
OK or NG
OK
>> GO TO 2.
NG
>> Check the DTC detected item, go to
.
●
If CAN communication line is detected, go to
"DTC U1000 CAN COMMUNICATION LINE"
.
BCIA0030E
BCIA0030E
