On-Vehicle Inspection

WARNING: This page is about a different car, the 2007 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

The rear heater relay is built in the engine room junction block. Since the relay is constructed with a relay block that is in the junction block as a unit, it is impossible to disconnect the wire harness connecting with the relay block. If the relay has a malfunction, replace it with the junction block assembly wire harness together.

DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.
DISCONNECT ENGINE ROOM RELAY BLOCK
1. Disconnect the relay block from the vehicle body.
  
  Fig 1: Disconnecting Relay Block From Vehicle Body
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

CHECK ENGINE ROOM RELAY BLOCK (RR HTR RELAY)

Standard resistance

TESTER CONNECTION AND SPECIFIED CONDITION

Condition	Tester Connection	Specified Condition
Always	50 - 57	Below 1 Ω
Apply B+ between terminals 50 and 57	70 - 71	Below 1 Ω

If the result is not as specified, replace the engine room relay block.

INSTALL ENGINE ROOM RELAY BLOCK
CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
PERFORM INITIALIZATION
1. Perform initialization (see INITIALIZATION ).
  NOTE: Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.
  
  Fig 2: Installing Engine Room Relay Block
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002