Nissan Altima 2007-2012 Service Manual: B2098 ignition relay on stuck
Description
• IPDM E/R operates the ignition relay when it receives an ignition switch ON signal from BCM via CAN communication.
• Turn the ignition relay OFF by pressing the push-button ignition switch once when the vehicle speed is 4 km/ h (2.5 MPH) or less.
• Turn the ignition relay OFF with the following operation when the vehicle speed is more than 4 km/h (2.5 MPH) or when an abnormal condition occurs in CAN communication from the unified meter (Emergency OFF) - Press and hold the push-button ignition switch for 2 seconds or more.
- Press the push-button ignition switch 3 time within 1.5 seconds.
NOTE: The ignition relay does not turn ON for 3 seconds after emergency OFF even if the push-button ignition switch is pressed.
DTC Logic
DTC DETECTION LOGIC
Diagnosis Procedure
1. PERFORM SELF DIAGNOSIS
1. Turn the ignition switch ON.
2. Erase “Self Diagnostic Result” of IPDM E/R.
3. Turn ignition switch OFF, and wait for 1 second or more.
4. Turn the ignition switch ON. Check “Self Diagnostic Result” again.
Is “IGN RELAY ON” displayed? YES >> Replace IPDM E/R. Refer to PCS-48, "Removal and Installation".
NO >> Refer to GI-42, "Intermittent Incident".
U1000 can comm circuit
Description
Refer to LAN-7, "System Description".
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
Diagnosis Procedure
1. PERFORM SELF DIAGNOSTIC
1. Turn ignition switch ON ...
B2099 ignition relay off stuck
Description
• IPDM E/R operates the ignition relay when it receives an ignition switch ON
signal from BCM via CAN communication.
• Turn the ignition relay OFF by pressing the push-button ig ...
Other materials:
P2A00 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 heater in the element.
The sensor is capable of precise measurement = 1, but also in the
lean and r ...
Evaporative emission system
System Diagram
System Description
INPUT/OUTPUT SIGNAL CHART
*1: ECM determines the start signal status by the signals of engine speed and
battery voltage.
*2: This signal is sent to the ECM via the CAN communication line.
SYSTEM DESCRIPTION
The evaporative emission system is used to ...
P2423 HC adsorption catalyst function
DTC Logic
DTC DETECTION LOGIC
The ECM monitors the phase gap between heated oxygen sensor 2
signal and heated oxygen sensor 3 signal.
The phase gap between heated oxygen sensor 2 signal and heated
oxygen sensor 3 signal becomes small as the HC adsorption catalyst
(under floor) is deteriorate ...