Nissan Maxima Service and Repair 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 driver.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
- Turn ignition switch ON.
- Fully depress the brake pedal for at least 5 seconds.
- Erase the DTC.
- Check 1st trip DTC.
Diagnosis Procedure
1.CHECK STOP LAMP SWITCH CIRCUIT
- Turn ignition switch OFF.
- Check the stop lamp when depressing and releasing the brake pedal.
2.CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
- Disconnect stop lamp switch harness connector.
- Check the voltage between stop lamp switch harness connector and ground.
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
4.CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
- Disconnect stop lamp switch harness connector.
- Disconnect ECM harness connector.
- Check the continuity between stop lamp switch harness connector and ECM harness connector.
- Also check harness for short to ground and short to power.
5.DETECT MALFUNCTIONING PART
Check the following.
- Fuse block (J/B) connector E6
- Junction block connectors E44, E45
- Harness for open or short between ECM and stop lamp switch
6.CHECK STOP LAMP SWITC
7.CHECK INTERMITTENT INCIDENT
Component Inspection (Stop Lamp Switch)
1.CHECK STOP LAMP SWITCH-I
- Turn ignition switch OFF.
- Disconnect stop lamp switch harness connector.
- Check harness continuity between stop lamp switch terminals under the following conditions.
2.CHECK STOP LAMP SWITCH-II
- Adjust stop lamp switch installation. Refer to BR-18, "Removal and Installation".
- Check harness continuity between stop lamp switch terminals under the following conditions.
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
...
P2096, P2097, P2098, P2099 A/F sensor 1
Description
The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sensor.
The sensor element of the A/F sensor 1 is composed an electrode
layer, which transports ions. It has a he ...
Other materials:
Driver Attention Alert (if so equipped)
WARNING
Failure to follow the warnings and instructions
for proper use of the Driver Attention
Alert system could result in serious injury
or death.
The Driver Attention Alert system is only
a warning to inform the driver of a potential
lack of driver attention or
drowsiness. It will not ste ...
Brake booster
Inspection
OPERATION
With engine stopped, change vacuum to atmospheric pressure by
depressing brake pedal several times. Then with brake pedal fully
depressed, start engine and when vacuum pressure reaches the
standard, make sure that clearance between brake pedal and floor
panel decreas ...
P0603 ECM power supply
Description
Battery voltage is supplied to the ECM even when the ignition switch
is turned OFF for the ECM memory function of the DTC memory, the
air-fuel ratio feedback compensation value memory, the idle air volume
learning value memory, etc.
DTC Logic
DTC DETECTION LOGIC
DTC CON ...
Nissan Maxima Owners Manual
- Illustrated table of contents
- Safety-Seats, seat belts and supplemental restraint system
- Instruments and controls
- Pre-driving checks and adjustments
- Monitor, climate, audio, phone and voice recognition systems
- Starting and driving
- In case of emergency
- Appearance and care
- Do-it-yourself
- Maintenance and schedules
- Technical and consumer information
Nissan Maxima Service and Repair Manual
0.0091