Highlander 4WD V6-3.5L (2GR-FE) (2008)
Auxiliary Heater Element Relay: Testing and Inspection
AIR CONDITIONING: PTC HEATER RELAY: ON-VEHICLE INSPECTION
ON-VEHICLE INSPECTION
1. 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.
2. REMOVE PTC HEATER RELAY
(a) Remove the 3 PTC heater relays to the engine room No. 2 relay block.
3. INSPECT PTC HEATER RELAY
(a) Measure the resistance of the relay.
Standard resistance:
-
If the result is not as specified, replace the relay.
4. INSTALL PTC HEATER RELAY
5. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
6. PERFORM INITIALIZATION
(a) Perform initialization. See: Testing and Inspection/Programming and Relearning/Repair Instruction - Initialization
NOTE: Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.