Nissan Altima 2007-2012 Service Manual: Idle speed
Description
This describes how to check the idle speed. For the actual procedure, follow the instructions in “BASIC INSPECTION”.
IDLE SPEED : Special Repair Requirement
1.CHECK IDLE SPEED
>> INSPECTION END
Additional service when replacing control unit
Description
When replacing ECM, this procedure must be performed.
Special Repair Requirement
1.PERFORM INITIALIZATION OF NATS SYSTEM AND REGISTRATION OF ALL NATS IGNITION
KEY IDS
Refer to SEC-15 ...
Ignition timing
Description
This describes how to check the ignition timing. For the actual procedure,
follow the instructions in “BASIC
INSPECTION”.
IGNITION TIMING : Special Repair Requirement
1.CHECK IG ...
Other materials:
DLC branch line circuit
Diagnosis Procedure
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connectors of the data link connector for damage,
bend and loose connection
(connector side and harness side) ...
Automatic speed control device
(ASCD)
System Diagram
System Description
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM through CAN communication line
BASIC ASCD SYSTEM
Refer to Owner's Manual for ASCD operating instructions.
Automatic Speed Control Device (ASCD) allows a driver to keep vehicle at
predetermin ...
P1720 VSS
Description
ECM receives two vehicle speed signals via the CAN communication line. One is
sent from “ABS actuator and
electric unit (control unit)” via the combination meter, and the other is from
TCM (Transmission control module).
ECM uses these signals for engine control.
DTC Logic
...
