LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 1990 >> LS 400 >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> A/C-Heater System - Automatic >> Testing >> A/C Control Assembly >> Defogger Relay Check

Defogger Relay Check

  1. Remove defogger relay from junction block No. 1. Ensure continuity exists between relay terminals No. 3 and No. 4. See Fig 1. Continuity should not exist between relay terminals No. 1 and No. 2.
  2. Apply battery voltage to relay terminal No. 3, and ground relay terminal No. 4. Ensure continuity now exists between relay terminals No. 1 and No. 2. If continuity of relay is not as described, replace defogger relay.
Fig 1: Identifying Defogger Relay Terminals
G91J04700Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
scientia non olet · About LEMON Manuals