Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSTOYOTA2004CELICA GT, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 357 (FRONT POWER SEAT CONTROL SYSTEM (WITH MEMORY) - DIAGNOSIS)POWER SEAT CONTROL SWITCH CIRCUITINSPECTION PROCEDURE

2004 Toyota Celica GT, Standard

Inspection Procedure

2004 Toyota Celica GT, StandardSECTION Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FUSE (PWR SEAT)
1. Remove the PWR SEAT fuse from driver side J/B.
2. Measure the resistance.
  Standard: Below 1 Ω
NG: REPLACE FUSE

OK: Go to next step.
INSPECT POWER SEAT SWITCH ASSY
1. Disconnect the power seat switch connector.
2. Measure the resistance of each terminal, as shown in Fig 1 and Fig 2.
  
  Fig 1: Inspecting Power Seat Switch Assy
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard:
  
  Fig 2: Power Seat Switch Assy. Tester Connection Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  NG: REPLACE POWER SEAT SWITCH ASSY (See OVERHAUL )
  
  OK: Go to next step.
CHECK HARNESS AND CONNECTOR (POWER SOURCE)
1. Measure the voltage of each terminal of the wire harness side connectors.
  Standard:
  
  Fig 3: Harness And Connector (Power Source) Voltage Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance of each terminal, as shown in Fig 5 and Fig 4.
  Standard:
  
  Fig 4: Harness And Connector (Power Source) Resistance Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.