Inspection Procedure

CHECK SWITCH (BEEP SOUND)
1. Check switch.
  1. Check that the beep sounds when touch switch is pressed.
1. OK: CHECK AND REPLACE NAVIGATION ECU
2. NG: Go to next step.
INSPECT MULTI-DISPLAY JUNCTION BLOCK
1. Check that the malfunction disappear when a know good multi-display junction block is installed.
  
  Fig 1: Malfunction Table - Multi-Display Junction Block
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. A: Go to next step.
2. B: REPLACE MULTI-DISPLAY JUNCTION BLOCK
INSPECT COOLER WIRE NO.1 (BETWEEN MULTI-DISPLAY JUNCTION BLOCK AND AIR CONDITIONING PANEL SUB-ASSY)
1. NG: REPLACE COOLER WIRE NO. 1
2. OK: Go to next step.
INSPECT COOLER WIRE NO. 1 (BETWEEN AIR CONDITIONING PANEL SUB-ASSY AND AIR CONDITIONER AMPLIFIER ASSY)
1. NG: REPLACE COOLER WIRE NO. 1
2. OK: Go to next step.
INSPECT AIR CONDITIONING PANEL SUB-ASSY
1. Check that the malfunction disappear when a know good air conditioning panel sub-assy is installed.
  
  Fig 2: Malfunction Table - Air Conditioning Panel Sub-Assy
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. A: REPLACE AIRCONDITIONER AMPLIFIER ASSY
2. B: REPLACE AIR CONDITIONING PANEL SUB-ASSY