Toyota Venza: Air Conditioning Amplifier Communication Stop Mode
DESCRIPTION
|
Detection Item |
Symptom |
Trouble Area |
|---|---|---|
|
Air Conditioning Amplifier Communication Stop Mode |
|
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- Turn the ignition switch off before measuring the resistances between CAN bus main wires and between CAN bus branch wires.
- Turn the ignition switch off before inspecting CAN bus wires for a ground short.
- After the ignition switch is turned off, check that the key reminder warning system and light reminder warning system are not operating.
- Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the ignition switch, any other switches or the doors. If any doors need to be opened in order to check connectors, open the doors and leave them open.
HINT:
- Operating the ignition switch, any other switches or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.
- Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine the cause of the malfunction.
PROCEDURE
|
1. |
CHECK CAN BUS WIRE FOR DISCONNECTION (AIR CONDITIONING AMPLIFIER BRANCH WIRE) |
(a) Turn the ignition switch off.
|
(b) Disconnect the connector of the air conditioning amplifier. Text in Illustration
|
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
D47-11 (CANH) - D47-12 (CANL) |
Ignition switch off |
54 to 69 Ω |
| NG | .gif) |
REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (AIR CONDITIONING AMPLIFIER BRANCH WIRE) |
|
.gif)
|
2. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) |
(a) Turn the ignition switch to ON.
|
(b) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) |
|
|
3. |
CHECK HARNESS AND CONNECTOR (GROUND TERMINAL) |
(a) Turn the ignition switch off.
|
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
| OK | |
REPLACE AIR CONDITIONING AMPLIFIER |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) |
Lost Communication with A/C ECU (U0164)
DESCRIPTION
DTC No.
DTC Detection Condition
Trouble Area
U0164
No communication from the air conditioning amplifier continues.
...
Skid Control ECU Communication Stop Mode
DESCRIPTION
Detection Item
Symptom
Trouble Area
Skid Control ECU Communication Stop Mode
"ABS/VSC/TRAC" is not displa ...
Other materials about Toyota Venza:
Removal
REMOVAL
PROCEDURE
1. REMOVE REAR WHEELS
2. REMOVE CENTER EXHAUST PIPE ASSEMBLY
(a) Remove the center exhaust pipe assembly.
HINT:
Refer to the instructions for Removal of the exhaust pipe (See page
for 2GR-FE,
for 1AR-FE).
3. REMOVE PROPELLER WITH ...
Reassembly
REASSEMBLY
PROCEDURE
1. INSTALL FRONT SEAT WIRE RH (for Front Passenger Side)
(a) Engage each clamp and install the front seat wire RH.
2. INSTALL OCCUPANT CLASSIFICATION ECU (for Front Passenger Side)
3. INSTALL SEAT POSITION SENSOR
4. INSTALL SEA ...
Check For Intermittent Problems
CHECK FOR INTERMITTENT PROBLEMS
HINT:
Inspect the ECM using check mode. Intermittent problems are easier to detect
with the Techstream when the ECM is in check mode. In check mode, the ECM uses 1
trip detection logic, which is more sensitive to malfuncti ...
0.2599