Remove the front seat (see page 20-87). Disconnect the seat heater harness 2P connector (A) from the floor wire harness and 6P connector (B) from the seat heater relay (C). Wire side of female terminals Terminal side of male terminals Check for continuity between the A1 and B3 terminals and A2 and B6 terminals. There should be continuity. If there is no continuity, replace the seat cushion (see page 20-87). Check for continuity between the B1 and B4 terminals and B1 and B5 terminals. There should be continuity. If there is no continuity, replace the seat cushion (see page 20-87).

Remove the front seat (see page 20-87). Disconnect the 6P connector from the seat heater relay (A). Check for continuity between the No. 6 and No. 5 terminals and No. 6 and No. 4 terminals. There should be continuity. If there is no continuity, replace the seat heater relay. Check for continuity between the No. 1 and No. 6 terminals and No. 3 and No. 4 terminals when power and ground are connected across the No. 6 and No. 5 terminals. There should be continuity. If there is no continuity, replace the seat heater relay.