1. INSPECT FINS BLOCKAGE

If the fins are clogged, wash them with water or a steam cleaner.
Dry with compressed air.
NOTICE: If the distance between the steam cleaner and the core is too close, the fins may become damaged.
Keep the following injection distance.
Standard:

ComponentsTerminals of ECU
1. CHECK SLIDING ROOF DRIVE GEAR SUB- ASSY (SLIDING ROOF ECU)
(a) Disconnect the sliding roof ECU connector, and check the
voltage or continuity of each terminal of the wire harness
side connector.
If the result is not as specified, there may be a malfunction on
the wire harness. ...