LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2021 >> Prius LE AWD-e >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Control System - Service Information >> Relay >> On-Vehicle Inspection [11/2015 - ] >> Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

On-Vehicle Inspection [11/2015 - ]: Procedure

  1. INSPECT CIRCUIT OPENING RELAY ASSEMBLY (C/OPN) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3 - 5 Auxiliary battery voltage is not applied between terminals 1 and 2 10 kΩ or higher
      3 - 5 Auxiliary battery voltage is applied between terminals 1 and 2 Below 1 Ω

      If the result is not as specified, replace the circuit opening relay assembly (C/OPN).

      GTY373106Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT WATER PUMP RELAY (ENG W/PMP) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3 - 5 Auxiliary battery voltage is not applied between terminals 1 and 2 10 kΩ or higher
      3 - 5 Auxiliary battery voltage is applied between terminals 1 and 2 Below 1 Ω

      If the result is not as specified, replace the water pump relay (ENG W/PMP).

      GTY373106Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002