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:
Variable induction air system
System Diagram
System Description
INPUT/OUTPUT SIGNAL CHART
*: ECM determines the start signal status by the signals of engine speed and
battery voltage.
SYSTEM DESCRIPTION
In the medium speed range, the power valves are closed. Under this condition,
the pressure waves of the
...
AMP on signal circuit
Description
When the audio system is turned on, a voltage signal is supplied from the AV
control unit to the BOSE speaker
amp. When this signal is received, the BOSE speaker amp. will turn on.
Diagnosis Procedure
1.CHECK AMP ON SIGNAL (BOSE SPEAKER AMP)
Turn audio system ON.
Check v ...
Tire Pressure Monitoring System (TPMS)
Each tire, including the spare (if provided),
should be checked monthly when cold and inflated
to the inflation pressure recommended by
the vehicle manufacturer on the vehicle placard
or tire inflation pressure label. (If your vehicle has
tires of a different size than the size indicated on
th ...
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
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