Toyota Venza: How To Proceed With Troubleshooting

Toyota Venza Service Manual / Heating / Air Conditioning / Air Conditioning System / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use the following procedure to troubleshoot the air conditioning system.
*: Use the Techstream.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

2.	INSPECT BATTERY VOLTAGE

(a) Inspect the battery voltage.

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

3.	CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

(a) Use the Techstream to check if the LIN communication system is functioning normally.

Result	Proceed to
LIN DTC is not output	A
LIN DTC is output	B ( )

Result

Proceed to

LIN DTC is not output

LIN DTC is output

( )

GO TO LIN COMMUNICATION SYSTEM

4.	CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

(a) Use the Techstream to check if the CAN communication system is functioning normally.

Result	Proceed to
CAN DTC is not output	A
CAN DTC is output	B ( )

Result

Proceed to

CAN DTC is not output

CAN DTC is output

( )

GO TO CAN COMMUNICATION SYSTEM

5.	CHECK FOR DTC*

(a) Check for DTCs and note any code that is output.

(b) Clear the DTCs.

(c) Recheck for DTCs. Based on the DTCs output above, try to force the A/C system to output DTCs by simulating the conditions indicated by the DTC.

Result	Proceed to
DTC is not output	A
DTC is output	B

GO TO STEP 8

6.	PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table (See page ).

Result	Proceed to
Fault is not listed in Problem Symptoms Table	A
Fault is listed in Problem Symptoms Table	B

GO TO STEP 8

7.	OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Panel diagnosis (indicator check) (See page )

(b) Panel diagnosis (sensor check) (See page )

(d) Data List / Active Test (See page )

(e) Terminals of ECU (See page )

(f) On-vehicle Inspection

(g) Inspection

8.	ADJUST, REPAIR OR REPLACE

END

System Description

SYSTEM DESCRIPTION 1. GENERAL (a) The air conditioning system has the following controls. Control Outline Neural Network Control This control is ca ...

Customize Parameters

CUSTOMIZE PARAMETERS NOTICE: When the customer requests a change in a function, first make sure that the function can be customized. Be sure to make a note of the current settings be ...

Other materials about Toyota Venza:

On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT CENTER AIRBAG SENSOR ASSEMBLY (VEHICLE NOT INVOLVED IN COLLISION) (a) Perform a diagnostic system check (See page ). 2. INSPECT CENTER AIRBAG SENSOR ASSEMBLY (VEHICLE INVOLVED IN COLLISION AND AIRBAG HAS NOT D ...

HL AutoLeveling ECU Failure (B2420)
DESCRIPTION When the headlight leveling ECU assembly detects a malfunction in itself, this DTC is stored. DTC No. DTC Detecting Condition Trouble Area B2420 Malfunction of headlight leveling ECU ...

Removal
REMOVAL CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH side and LH side. The procedure listed below is for the LH side. PROCEDURE 1. REMOVE REAR WHEEL 2. REMOVE DECK SIDE TRIM (a) Disengage the 5 claws, and ...