Nissan Armada 2025-2026 Service and Repair Manual: Diagnosis Procedure
CHECK POWER SOURCE AND GROUND CIRCUIT
Turn ignition switch OFF.
Remove the heated steering wheel. Refer to Removal and Installation.
Turn ignition switch ON.
CAUTION:
Never start the engine.
Turn heated steering wheel switch ON.
Check voltage between spiral cable harness connector terminals.
Spiral cable Condition Voltage (Approx.) Connector Terminal M82 41 − 42 Within 30 seconds after turning ON the heated steering switch. Battery voltage Other conditions. 0 V
Is the inspection result normal?
YES>>GO TO 2.
NO>>GO TO 3.
CHECK GROUND CIRCUIT
Check continuity between spiral cable harness connector terminal and ground.
| Spiral cable | Ground | Continuity | |
| Connector | Terminal | ||
| M82 | 42 | Existed | |
Is the inspection result normal?
YES>>Replace heated steering wheel. Refer to Removal and Installation.
NO>>Repair or replace damaged parts.
CHECK HARNESS BETWEEN HEATED STEERING WHEEL RELAY AND SPIRAL CABLE
Turn ignition switch OFF.
Disconnect heated steering wheel relay connector. Refer to Component Parts Location.
Disconnect spiral cable connector.
Check continuity between heated steering wheel relay harness connector terminal and spiral cable harness connector terminal.
Heated steering wheel relay Spiral cable Continuity Connector Terminal Connector Terminal E79 5 M82 41 Existed Check continuity between heated steering wheel relay harness connector terminal and ground.
Heated steering wheel relay Ground Continuity Connector Terminal E79 5 Not existed
Is the inspection result normal?
YES>>GO TO 4.
NO>>Repair or replace damaged parts.
CHECK HEATED STEERING WHEEL RELAY
Check heated steering wheel relay. Refer to Component Inspection (Heated Steering Wheel Relay).
Is the inspection result normal?
YES>>GO TO 5.
NO>>Replace heated steering wheel relay. Refer to Component Parts Location.
DETECT MALFUNCTIONING ITEM
Check the following.
Battery
Harness for short or open between battery and fuse block (J/B).
10A fuse [No. 53 and 67, located in the fuse block (J/B)]. Refer to Wiring Diagram.
Fuse block (J/B)
Is the inspection result normal?
YES>>GO TO 6.
NO>>Repair or replace damaged parts.
CHECK HARNESS BETWEEN HEATED STEERING WHEEL RELAY AND A/C AUTO AMP.
Check continuity between heated steering wheel relay harness connector terminal and A/C auto amp. harness connector terminal.
Heated steering wheel relay A/C auto amp. Continuity Connector Terminal Connector Terminal E79 2 M6 56 Existed Heated steering wheel relay Ground Continuity Connector Terminal E79 2 Not existed
Is the inspection result normal?
YES>>GO TO 7.
NO>>Repair or replace damaged parts.
CHECK HARNESS BETWEEN FUSE BLOCK (J/B) AND HEATED STEERING WHEEL RELAY
Check continuity between fuse block (J/B) harness connector terminal and heated steering wheel relay.
Fuse block (J/B) Heated steering wheel relay Continuity Connector Terminal Connector Terminal E102 72 E79 1 Existed Fuse block (J/B) Ground Continuity Connector Terminal E102 72 Not existed
Is the inspection result normal?
YES>>Repair or replace A/C auto amp. Refer to Removal and Installation.
NO>>Repair or replace damaged parts.
Component Function Check
CHECK HEATED STEERING WHEEL SYSTEM
Check operate heated steering wheel system. Refer to System Description (Heated Steering Wheel).
Is the inspection result normal?
YES>>
Go to Diagnosis Proced ...
Component Inspection (Heated Steering Wheel Relay)
CHECK HEATED STEERING WHEEL RELAY CONTINUITY
Check continuity between heated steering wheel relay terminals.
CAUTION:
Connect the fuse between the terminals when applying the voltage.
Heated steering ...
Other materials:
Engine Does Not Start When Intelligent Key Is Inside of Vehicle
Engine does not start when push-button ignition switch is pressed while carrying Intelligent Key.
NOTE:
The engine start function, door lock function, power distribution system, and NATS-IVIS/NVIS in the Intelligent Key system are closely related to each other regarding control. The vehicle security ...
Removal and Installation
WARNING:
Always observe the following items for preventing accidental activation.
Always work from the side of air bag module. Never work in front of it.
Never use air tools or electric tools for servicing.
REMOVAL
Remove headlining assembly. Refer to Removal and Installation.
Disconnect curtain ai ...
Work Flow
WORK FLOW (WITH GR8-1200 NI)
Starting System Diagnosis With GR8-1200 NI
To test the starting system, use the following special service tool:
Multitasking battery and electrical diagnostic station GR8-1200 NI
NOTE:
Refer to the diagnostic station Instruction Manual for proper starting system diagnos ...
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