Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM1000000018K2T |
Model Year Start: 2018 |
Model: Sienna |
Prod Date Range: [11/2017 -
] |
Title: CRUISE CONTROL: FORWARD RECOGNITION CAMERA SYSTEM: C1AAE; Heater Circuit; 2018 - 2020 MY Sienna [11/2017 - ] |
DESCRIPTION
The forward recognition camera controls the flow of current to the forward recognition with heater hood sub-assembly.
If the forward recognition camera detects a malfunction in the forward recognition with heater hood sub-assembly circuit, it will store this DTC.
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
C1AAE
|
Heater Circuit
|
Either of the following conditions is met after 2 seconds have elapsed since the ignition switch was turned to ON:
-
Short to +B detected in the forward recognition with heater hood sub-assembly circuit for 1 second or more cumulatively
-
Open or short to ground detected in the forward recognition with heater hood sub-assembly circuit for 5 seconds or more
|
-
Forward recognition with heater hood sub-assembly
-
Forward recognition camera
-
Wire harness or connector
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
Inspect the fuses for circuits related to this system before performing the following procedure.
-
When replacing the forward recognition camera, always replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle. As a result, a DTC may be stored.
-
If the forward recognition camera has been replaced with a new one, be sure to perform forward recognition camera adjustment.
Click here
PROCEDURE
1.
|
CHECK FOR DTCs (FORWARD RECOGNITION CAMERA SYSTEM)
|
(a) Clear the DTCs.
Click here
(b) Perform the following procedure.
HINT:
If the following procedure is not performed, the previously output DTC cannot be detected.
-
Turn the ignition switch to ON and wait 7 seconds or more.
(c) Check for DTCs.
Click here
Result
|
Proceed to
|
DTC C1AAE is not output
|
A
|
DTC C1AAE is output
|
B
|
B
|
|
|
2.
|
INSPECT FORWARD RECOGNITION WITH HEATER HOOD SUB-ASSEMBLY
|
(a) Turn the ignition switch off.
(b) Disconnect the T33 forward recognition with heater hood sub-assembly connector.
|
|
*a
|
Component without harness connected
(Forward Recognition with Heater Hood Sub-assembly)
|
|
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
1 (IG1) - 2 (HTR)
|
Ignition Switch off
|
38 to 42 Ω
|
(d) Connect the T33 forward recognition with heater hood sub-assembly connector.
OK
|
|
|
3.
|
CHECK HARNESS AND CONNECTOR (POWER SOURCE VOLTAGE)
|
(a) Disconnect the T33 forward recognition with heater hood sub-assembly connector.
|
|
*a
|
Front view of wire harness connector
(to Forward Recognition with Heater Hood Sub-assembly)
|
|
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
T33-1 (IG1) - Body ground
|
Ignition Switch ON
|
11 to 14 V
|
Ignition Switch off
|
Below 1.5 V
|
(c) Connect the T33 forward recognition with heater hood sub-assembly connector.
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
|
OK
|
|
|
4.
|
CHECK HARNESS AND CONNECTOR (FORWARD RECOGNITION WITH HEATER HOOD SUB-ASSEMBLY - FORWARD RECOGNITION CAMERA)
|
(a) Disconnect the T33 forward recognition with heater hood sub-assembly connector.
(b) Disconnect the T32 forward recognition camera connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
T33-2 (HTR) - T32-1 (HTR)
|
Always
|
Below 1 Ω
|
T33-2 (HTR) or T32-1 (HTR) - Body ground
|
Always
|
10 kΩ or higher
|
(d) Connect the T32 forward recognition camera connector.
(e) Connect the T33 forward recognition with heater hood sub-assembly connector.
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR (FORWARD RECOGNITION WITH HEATER HOOD SUB-ASSEMBLY - FORWARD RECOGNITION CAMERA)
|
|