Nissan Altima (L32) 2007-2012 Service Manual: Power supply and ground circuit
Diagnosis Procedure
1. CHECK FUSES AND FUSIBLE LINK
Check that the following IPDM E/R fuses or fusible link are not blown.
Is the fuse blown?
YES >> Replace the blown fuse or fusible link after repairing the affected
circuit.
NO >> GO TO 2
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connectors.
3. Check voltage between IPDM E/R harness connector and
ground.
Is the measurement value normal?
YES >> GO TO 3
NO >> Repair harness or connector.
3. CHECK GROUND CIRCUIT
Check continuity between IPDM E/R harness connectors and
ground.
Does continuity exist?
YES >> Inspection End.
NO >> Repair harness or connector.
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 ...
IPDM E/R (INTELLIGENT POWER DISTRIBUTION
MODULE ENGINE ROOM)
Reference Value
VALUES ON THE DIAGNOSIS TOOL
TERMINAL LAYOUT
PHYSICAL VALUES
Wiring Diagram — Coupe
...
Other materials: Vehicle information display warnings
and indicators
The following messages may appear in
your vehicle information display.
Place the key near the start
switch
This indicator appears when the battery of
the Intelligent Key is low and when the Intelligent
Key system and the vehicle are not
communicating normally.
If this appears, touch the ignition s ...
Maintenance precautions
When performing any inspection or maintenance
work on your vehicle, always take
care to prevent serious accidental injury
to yourself or damage to the vehicle. The
following are general precautions which
should be closely observed.
WARNING
Park the vehicle on a level surface,
apply the parking br ...
Heated steering wheel switch (if so equipped)
Push the heated steering wheel switch to
warm the steering wheel after the ignition
switch is placed in the ON position. The
indicator light will come on.
If the surface temperature of the steering
wheel is below 68ºF (20ºC), the system will
heat the steering wheel and cycle off and
on to mainta ...
B2099 ignition relay off stuck
ECU diagnosis