Inspection Procedure
NOTE:
When using the Techstream with the engine switch off to troubleshoot:
Connect the Techstream to the vehicle, and turn a courtesy switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins.
Connect the Techstream to the vehicle, and turn a courtesy switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins.
- CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - REAR AIR CONDITIONING CONTROL PANEL)
- Disconnect the E36 amplifier connector.
- Disconnect the E55 panel connector.
- Measure the resistance and voltage according to the value (s) in the tables below.
Standard Resistance
TESTER CONNECTION SPECIFIED CONDITION CHARTTester Connection Condition Specified Condition E36-21 (RUN) - E55-4 (RUN) Always Below 1 Ω E36-21 (RLIN) - Body ground Always 10 kΩ or higher Standard Voltage
TESTER CONNECTION SPECIFIED CONDITION CHARTTester Connection Condition Specified Condition E36-21 (RUN) - Body ground Always Below 1 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
Fig 1: Checking Harness And Connector (Air Conditioning Amplifier - Rear Air Conditioning Control Panel)Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
OK: Go to next Step
- CHECK REAR AIR CONDITIONING CONTROL PANEL (BATTERY VOLTAGE AND BODY GROUND)
- Disconnect the E55 panel connector.
- Measure the resistance and voltage according to the value (s) in the tables below.
Standard Resistance
TESTER CONNECTION SPECIFIED CONDITION CHARTTester Connection Condition Specified Condition E55-1 (E) - Body ground Always Below 1 Ω Standard Voltage
TESTER CONNECTION SPECIFIED CONDITION CHARTTester Connection Condition Specified Condition E55-6 (IG) - Body ground Engine switch on (IG) 11 to 14 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
OK: Go to next Step
- CHECK REAR AIR CONDITIONING CONTROL PANEL
- Temporarily replace the rear air conditioning control panel with a new or normally functioning one (See REAR AIR CONDITIONING PANEL ).
- Check that the rear air conditioning function is normal. OK: Rear air conditioning function is normal.
OK: Rear air conditioning function is normal.
NG: REPLACE AIR CONDITIONING AMPLIFIER (See REMOVAL )
OK: END (REAR AIR CONDITIONING CONTROL PANEL IS DEFECTIVE)