Nissan Altima 2007-2012 Service Manual: B terminal circuit
Description
The “B” terminal is constantly supplied with battery power.
Diagnosis Procedure
CAUTION: Perform diagnosis under the condition that the engine cannot start by the following procedure.
1. Remove fuel pump fuse.
2. Crank or start the engine (where possible) until the fuel pressure is depleted.
1.CHECK TERMINAL B POWER SUPPLY VOLTAGE
1. Turn ignition switch OFF.
2. Make sure that starter motor connector F27 terminal B connection is clean and tight.
3. Check voltage between starter motor connector F27 terminal B and ground.
Is there battery voltage present? YES >> GO TO 2
NO >> Check harness between battery and starter motor for open circuit.
2.CHECK BATTERY CABLE (VOLTAGE DROP TEST)
1. Shift CVT selector lever to “P” or “N” position. (CVT models) Press and hold the clutch pedal fully with the control lever in neutral. (M/T models) 2. Check voltage between battery positive terminal and starter motor connector F27 terminal B while cranking the engine.
Is the voltage drop less than 0.5V? YES >> GO TO 3
NO >> Check harness between the battery and the starter motor for high resistance.
3.CHECK GROUND CIRCUIT STATUS (VOLTAGE DROP TEST)
1. Shift CVT selector lever to “P” or “N” position. (CVT models) Press and hold the clutch pedal fully with the control lever in neutral. (M/T models) 2. Check voltage between battery positive terminal and starter motor connector F27 terminal B while cranking the engine.
Is the voltage drop less than 0.5V? YES >> GO TO 3
NO >> Check harness between the battery and the starter motor for high resistance.
3.CHECK GROUND CIRCUIT STATUS (VOLTAGE DROP TEST)
1. Shift CVT selector lever to “P” or “N” position. (CVT models) Press and hold the clutch pedal fully with the control lever in neutral. (M/T models) 2. Check voltage between starter motor case and battery negative terminal while cranking the engine.
Is the voltage drop less than 0.2V? YES >> Terminal B circuit is OK. Further inspection necessary.
Refer to STR-29, "Work Flow".
NO >> Check the starter motor case to engine mounting for high resistance.
S connector circuit
Description
The starter motor magnetic switch is supplied with power when the ignition
switch is turned to the START position
while the selector lever is in the P or N position (CVT models) or th ...
Other materials:
Sunroof system
Reference Value
TERMINAL LAYOUT
PHYSICAL VALUES
Wiring Diagram — Coupe
Wiring Diagram — Sedan
...
B2609 steering status
Description
There are 2 switches in the electronic steering column lock (steering
lock/unlock switch 1 and 2). BCM compares
those two switches conditions to judge the present steering status.
DTC Logic
DTC DETECTION LOGIC
NOTE:
• If DTC B2609 is displayed with DTC U1000, first perform th ...
Windows
POWER WINDOWS
WARNING
● Make sure that all passengers have
their hands, etc. inside the vehicle while
it is in motion and before closing the
windows. Use the window lock switch to
prevent unexpected use of the power
windows.
● Do not leave children unattended inside
the vehicle. ...