Nissan Altima 2007-2012 Service Manual: Power supply and ground circuit
Description
• EPS system functions by ignition power supply.
Diagnosis Procedure
1.CHECK POWER SUPPLY
1. Turn the ignition switch OFF.
2. Disconnect power steering control unit harness connector.
3. Check voltage between power steering control unit harness connector M59 terminal 3 and ground.
4. Turn the ignition switch ON.
CAUTION: Never start the engine.
5. Check voltage between power steering control unit harness connector M59 terminal 3 and ground.
Is the inspection result normal? YES >> GO TO 2.
NO >> Check the following. If any items are damaged, repair or replace damaged parts.
• 10A fuses (#3) open - Harness for short or open between ignition switch and power steering control unit harness connector No. 3 terminal.
- Ignition switch.
2.CHECK GROUND CIRCUIT
1. Turn the ignition switch OFF.
2. Check continuity between power steering control unit harness connector M59 terminal 6 and ground.
Is the inspection result normal? YES >> GO TO 3.
NO >> Repair open circuit or short to power in harness or connectors.
3.CHECK TERMINALS AND HARNESS CONNECTORS
Check power steering control unit pin terminals for damage or loose connection with harness connector.
Is the inspection result normal? YES >> Inspection End
NO >> Repair or replace damaged parts.
Power steering solenoid valve
Description
• Power steering solenoid valve controls the power steering oil pressure in
the gear housing assembly.
Diagnosis Procedure
1.CHECK POWER STEERING SOLENOID VALVE SIGNAL
1. Start e ...
Other materials:
B210D starter relay
Description
Located in IPDM E/R, it runs the starter motor. The starter relay is turned
ON by the BCM when the ignition
switch is in START position. IPDM E/R transmits the starter relay ON signal to
BCM via CAN communication.
DTC Logic
DTC DETECTION LOGIC
NOTE:
• If DTC B210D is displaye ...
IPDM E/R (Intelligent power distribution
module engine room)
Reference Value
VALUES ON THE DIAGNOSIS TOOL
TERMINAL LAYOUT
PHYSICAL VALUES
Wiring Diagram — Coupe
Wiring Diagram — Sedan
Fail Safe
CAN COMMUNICATION CONTROL
When CAN communication with ECM and BCM is impossible, IPDM E/R performs
fail-safe c ...
P0031, P0032, P0051, P0052 A/F sensor 1
heater
Description
SYSTEM DESCRIPTION
The ECM performs ON/OFF duty control of the A/F sensor 1 heater corresponding
to the engine operating
condition to keep the temperature of A/F sensor 1 element within the specified
range.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECO ...