Nissan Armada 2025-2026 Service and Repair Manual: Welding of Ultra High Strength Steel
SPOT WELDING
Spot welding is limited to ultra high strength steel (tensile strength: 980 MPa) according to the welding conditions listed below.
CAUTION:
If the below welding conditions cannot be met, then perform plug welding.
Never spot weld ultra high strength steel of tensile strength more than 980 MPa. For this type of ultra high strength steel, perform plug welding.
The below welding condition is applicable only to this vehicle. Never apply this same welding condition to other vehicles.
| Welder tip diameter | 6 mm |
| Welding pressure (Gun force) | 3300 N |
| Panel configuration | Combination of a plate of tensile strength 980 MPa and that of tensile strength less than 980 MPa. (Up to 3 plates) |
Welding current and weld time
| |
| Welding current | Weld time | Welding pressure (Gun force) | Description | |||
| 50 Hz | 60 Hz | |||||
 | Before welding | 0 A | - | - | 0 N | - |
 | First energization | 7000 A | 0.04 sec (2 cycle) | 0.05 sec (3 cycle) | 3300 N | Secure an energization path |
 | Cool down | 0 A | 0.02 sec (1 cycle) | 0.02 sec (1 cycle) | 3300 N | - |
 | Second energization | 7500 A | 0.12 sec (6 cycle) | 0.12 sec (7 cycle) | 3300 N | Main energization for nugget formation |
 | Keep pressurization | 0 A | 0.10 sec (5 cycle) | 0.08 sec (5 cycle) | 3300 N | - |
 | After welding | 0 A | - | - | 0 N | - |
PLUG WELDING
To weld ultra high strength steel of tensile strength 980 MPa or more, perform plug welding observing the welding hole diameter described in the manual.
CAUTION:
To perform plug welding, use fuel mixture (Ar 80% + CO2 20%) for shielding gas of welder.
Never use carbon dioxide gas (CO2 100%) as shielding gas of welder. Using CO2 100% gas results in inadequate weld strength.
When welding hole diameter cannot be met, make multiple holes (smaller diameter) so that the sum of the hole areas equals the area of the original weld hole.
EXAMPLE
 | Body sealing | ||||
 : For spot welding of steel plate of tensile strength 980 MPa, observe the indicated welding conditions. Refer to ″Welding of Ultra High Strength Steel″. | |||||
: Vehicle front
: Drill φ6 mm (0.24 in) hole for the plug welding hole (ultra high strength steel).
: N·m (kg-m, ft-lb)
Precautions for Body Repair
WARNING:
WARNING:
The repair information in this section is intended for trained body repair technicians who have attained a high level of skill and experience (e.g. ASE Collision Repair Certification ...
Side Radiator Core Support
WARNING:
: Vehicle front
: Weld the parts onto the back of the component part. Replacement part • Side radiator core support
: Vehicle front
: Weld the parts onto the back of the component par ...
Other materials:
Work Flow
DETAILED FLOW
INTERVIEW FROM THE CUSTOMER
CAUTION:
>>
GO TO 2.
CHECK SYMPTOM
CAUTION:
>>
GO TO 3.
PERFORM SELF-DIAGNOSIS
With CONSULT
Perform self-diagnosis for “CHASSIS CONTROL”.
Is DTC detected?
YES>>
Record or print self-diagnosis results and freeze frame data (FFD). ...
REAR VIEW CAMERA : Removal & Installation
REMOVAL
Remove back door finisher. Refer to Removal and Installation.
Remove the rear view camera mounting screws , then remove the rear view camera .
INSTALLATION
Install in the reverse order of removal.
NOTE:
Adjust the guide line position if the guide line position is shifted after installing t ...
Intelligent Key battery replacement
WARNING
Serious hazard: Swallowing a button cell battery can result in severe
injury or death.
If a coin-type battery is swallowed, it can cause internal burns within
as little as two hours.
Always keep both new and used batteries away from children when handling
your Nissan Armada ...
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