Nissan Altima (L32) 2007-2012 Service Manual: P0725 engine speed signal
Description
The engine speed signal is sent from the ECM to the TCM by CAN communication line.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION: Always drive vehicle at a safe speed.
NOTE: If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
1.CHECK DTC DETECTION
1. Turn ignition switch ON.
2. Select “DATA MONITOR”.
3. Start engine and maintain the following conditions for at least 10 consecutive seconds.
PRI SPEED SEN : More than 1000 rpm
Is “P0725 ENGINE SPEED SIG” detected? YES >> Go to TM-142, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".
Diagnosis Procedure
1.CHECK DTC WITH ECM
1. Turn ignition switch ON.
2. Perform “SELF-DIAG RESULTS” mode for “ENGINE”.
Is the inspection result normal? YES >> GO TO 2.
NO >> Check DTC detected item. Refer to EC-1555, "DTC Index".
2.CHECK DTC WITH TCM
Perform “SELF-DIAG RESULTS” mode for “TRANSMISSION”.
Is “P0725 ENGINE SPEED SIG” detected? YES >> Replace TCM. Refer to TM-254, "Exploded View".
NO >> GO TO 3.
3.DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal? YES >> Replace TCM. Refer to TM-254, "Exploded View".
NO >> Repair or replace damaged parts.
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Three-way catalyst
The three-way catalyst is an emission control
device installed in the exhaust system. Exhaust
gases in the three-way catalyst are burned at
high temperatures to help reduce pollutants.
WARNING
● The exhaust gas and the exhaust system
are very hot. Keep people, animals
or flammable mater ...
Trunk room trim & trunk lid finisher
Exploded View
TRUNK ROOM TRIM
1. Upper trunk finisher
2. Trunk lid finisher
3. Trunk side finisher (RH)
4. Trunk floor carpet
5. Trunk side finisher (LH)
6. Trunk spacer (LH)
7. Spare tire cover
8. Trunk net rear
9. Trunk spacer (RH)
10. Trunk rear finisher
11. Trunk net side
Remo ...
Rear view camera control unit
Diagnosis Procedure
1.CHECK FUSE
Check that the following fuses of the rear view camera control unit are not
blown.
Are the fuses OK?
YES >> GO TO 2
NO >> Be sure to eliminate cause of malfunction before installing new fuse.
2.CHECK POWER SUPPLY CIRCUIT
Check voltage between r ...