Toyota Sienna Service Manual: Terminals of ECU
1. CHECK DRIVER SIDE J/B ASSEMBLY (MULTIPLEX NETWORK BODY ECU)
- Disconnect the B6, 1C, 1K and 1L J/B connectors.
- Measure the voltage and resistance according to the value(s) in the table below.
HINT: If the result is not as specified, there may be a malfunction on the wire harness side.
- Reconnect the 1C, 1K, 1L and B6 connectors.
- Measure the voltage according to the value(s) in the table below.
Standard voltage
Operation check
1. REMOVE CHECK FUNCTION
Check that the key reminder warning buzzer
sounds.
With the driver side door closed, insert the key
into the ignition key cylinder and then turn the
...
Diagnosis system
1. CHECK DLC3
The vehicle's ECU uses ISO 15765-4 for
communication protocol. The terminal arrangement
of the DLC3 complies with SAE J1962 and matches
the ISO 15765-4 format.
NOT ...
Other materials:
Scratched / Reversed Disc
DTC 62-46 Scratched / Reversed Disc
DTC 63-46 Scratched / Reversed Disc
DESCRIPTION
DTC No.
DTC Detecting Condition
Trouble Area
62-46
Scratches or dirt is found on CD surface or CD is set
upside down.
CD
Radio receiver
...
Intake Air Temperature Sensor Gradient Too High
DESCRIPTION
The Intake Air Temperature (IAT) sensor, mounted on the Mass Air Flow (MAF)
meter, monitors the IAT.
The IAT sensor has a built-in thermistor with a resistance that varies according
to the temperature of the
intake air. When the IAT becomes low, the resistance of the the ...
Removal
1. REMOVE INSTRUMENT CLUSTER NO.1 FINISH PANEL CENTER
2. REMOVE INSTRUMENT CLUSTER NO.2 FINISH
PANEL CENTER
3. REMOVE INSTRUMENT CLUSTER FINISH PANEL GARNISH
4. REMOVE NAVIGATION RECEIVER ASSEMBLY WITH BRACKET
Remove the 4 screws.
Disconnect the connector and remove the
n ...