LS 600h V8-5.0L (2UR-FSE) Hybrid (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:
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Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt
pretensioner activation.
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When disconnecting the cable, some systems need to be initialized after the cable is reconnected See: Testing and
Inspection/Programming and Relearning/Repair Instruction - Initialization.
2. REMOVE PTC HEATER RELAY (PTC HTR 1, PTC HTR 3)
(a) Remove the 3 PTC heater relays from the No. 5 relay box.
3. INSPECT PTC HEATER RELAY (PTC HTR 1, PTC HTR 3)
(a) Measure the resistance of the magnet clutch relay.
Standard resistance:
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If the result is not as specified, replace the relay.
4. INSTALL PTC HEATER RELAY
5. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected See: Testing and
Inspection/Programming and Relearning/Repair Instruction - Initialization.
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.