Nissan Altima 2007-2012 Service Manual: P1805 Brake switch
Description
Brake switch signal is applied to the ECM via the stop lamp switch when the brake pedal is depressed. This signal is used mainly to decrease the engine speed when the vehicle is being driven.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Fully depress the brake pedal for at least 5 seconds.
3. Erase the DTC.
4. Check 1st trip DTC.
Is 1st trip DTC detected? YES >> Go to EC-1434, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
1.CHECK STOP LAMP SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Check the stop lamp when depressing and releasing the brake pedal.
Is the inspection result normal? YES >> GO TO 4.
NO >> GO TO 2.
2.CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Disconnect stop lamp switch harness connector.
2. Check the voltage between stop lamp switch harness connector and ground.
Is the inspection result normal? YES >> GO TO 4.
NO >> GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
• Fuse block (J/B) connector E6
• 10 A fuse (No. 7) • Harness for open or short between battery and stop lamp switch
>> Repair open circuit, short to ground or short to power in harness or connectors.
4.CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect stop lamp switch harness connector.
2. Disconnect ECM harness connector.
3. Check the continuity between stop lamp switch harness connector and ECM harness connector.
4. Also check harness for short to ground and short to power.
Is the inspection result normal? YES >> GO TO 6.
NO >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
• Fuse block (J/B) connector E6
• Harness for open or short between ECM and stop lamp switch
>> Repair open circuit, short to ground or short to power in harness or connectors.
6.CHECK STOP LAMP SWITCH
Refer to EC-1435, "Component Inspection (Stop Lamp Switch)".
Is the inspection result normal? YES >> GO TO 7.
NO >> Replace stop lamp switch.
7.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".
>> INSPECTION END
Component Inspection (Stop Lamp Switch)
1.CHECK STOP LAMP SWITCH-I
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.
3. Check harness continuity between stop lamp switch terminals under the following conditions.
Is the inspection result normal? YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK STOP LAMP SWITCH-II
1. Adjust stop lamp switch installation. Refer to BR-13, "Inspection and Adjustment".
2. Check harness continuity between stop lamp switch terminals under the following conditions.
Is the inspection result normal? YES >> INSPECTION END
NO >> Replace stop lamp switch.
P1801 Vias control solenoid valve 2
Description
The VIAS control solenoid valve 2 cuts the intake manifold vacuum signal for
power valve 2 control. It
responds to ON/OFF signals from the ECM. When the solenoid is OFF, the vacuum
s ...
P2100, P2103 Throttle control motor relay
Description
Power supply for the throttle control motor is provided to the ECM via the
throttle control motor relay. The throttle
control motor relay is controlled ON/OFF by the ECM. When the igni ...
Other materials:
Timing chain
Component
1. Timing chain tensioner
2. Internal chain guide
3. Timing chain tensioner
4. Camshaft sprocket (EXH)
5. Timing chain (secondary)
6. Timing chain (primary)
7. Camshaft sprocket (INT)
8. Camshaft sprocket (INT)
9. Timing chain (secondary)
10. Camshaft sprocket (EXH)
11. Slack ...
How to use the remote keyless entry function
The remote keyless entry function can operate all
door locks using the remote keyless function of
the Intelligent Key. The remote keyless function
can operate at a distance of 33 ft (10 m) away
from the vehicle. The operating distance depends
upon the conditions around the vehicle.
The remot ...
B2607 steering lock relay
Description
BCM requests to IPDM E/R to supply power to electronic steering column lock.
IPDM E/R sends status of
steering lock unit back to BCM.
DTC Logic
DTC DETECTION LOGIC
NOTE:
• If DTC B2607 is displayed with DTC U1000, first perform the trouble diagnosis
for DTC U1000. Refer to
...