Toyota Venza: Sleep Operation Failure of Occupant Classification ECU (B1796)
DESCRIPTION
In sleep mode, the occupant classification ECU reads the condition of each sensor while the ignition switch is off.
In this mode, if occupant classification ECU detects an internal malfunction, DTC B1796 is output.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
B1796 |
|
|
HINT:
When DTC B1650/32 is detected as a result of troubleshooting for the airbag system, check the DTCs stored in the occupant classification ECU. When DTC B1796 is output, perform troubleshooting for the DTC.
PROCEDURE
|
1. |
REPLACE OCCUPANT CLASSIFICATION ECU |
(a) Turn the ignition switch off.
(b) Disconnect the cable from the negative (-) battery terminal.
(c) Replace the occupant classification ECU (See page
.gif)
).
|
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|
2. |
PERFORM ZERO POINT CALIBRATION |
(a) Connect the cable to the negative (-) battery terminal.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Using the Techstream, perform Zero Point Calibration (See page
).
OK:
"Zero Point Calibration is complete." is displayed.
|
|
3. |
PERFORM SENSITIVITY CHECK |
(a) Using the Techstream, perform Sensitivity Check (See page
).
Standard:
27 to 33 kg (59.5 to 72.8 lb)
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END |
Fail-safe Chart
FAIL-SAFE CHART
1. FAIL SAFE FUNCTION
(a) The following chart shows the status of the controls when the system is normal
and malfunctioning.
The passenger airbag ON/OFF indicator ("ON ...
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
If a trouble code is displayed during the DTC check, check the circuit listed
for the code in the table below (proceed to the page listed for that circuit).
HINT:
Wh ...
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Regulations on the use of tire chains
• Regulations regarding the use of tire chains vary according to location and
type of road. Always check local regulations before installing chains.
• Retighten the chains after driving 1/4 - 1/2 mile (0.5 - 1.0 km).
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Observe the fo ...
Installation
INSTALLATION
PROCEDURE
1. INSTALL RADIATOR ASSEMBLY
(a) Install the fan assembly with motor to the radiator with the 2 guides
at the bottom and 3 snap fits on the top.
Text in Illustration
*1
Snap fit
...
Terminals Of Ecu
TERMINALS OF ECU
1. CHECK POSITION CONTROL ECU AND SWITCH ASSEMBLY
(a) Disconnect the T10 and T11 position control ECU and switch assembly connectors.
(b) Measure the voltage and resistance according to the value(s) in the table
below.
HINT:
Measure t ...
0.1137