Toyota Sienna Service Manual: Gateway ECU Communication Stop Mode

Toyota Sienna Service Manual / Can communication / Can communication system / Fail-safe chart / Gateway ECU Communication Stop Mode

DESCRIPTION

Detection Item	Symptom	Trouble Area
Gateway ECU Communication Stop Mode	"Gateway" is not displayed on the "Communication Bus Check" screen of the intelligent tester Applies to "Gateway ECU Communication Stop Mode" in the "DTC COMBINATION TABLE"	Power source circuit of gateway ECU Gateway ECU branch wire or connector Network Gateway ECU

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

Turn the ignition switch off before measuring the resistances of CAN bus main wires and CAN bus branch wires.
After the ignition switch is turned off, check that the key reminder warning system and light reminder warning system are not in operation.
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 switches, or any doors triggers related ECU and sensor communication with the CAN. This communication will cause the resistance value to change.

1 CHECK OPEN IN CAN BUS WIRE (ECU MAIN BUS WIRE)

CHECK OPEN IN CAN BUS WIRE (ECU MAIN BUS WIRE)

Turn the ignition switch off.
Disconnect the network gateway ECU connector.
Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

2 CHECK WIRE HARNESS (IG, BATT, GND)

CHECK WIRE HARNESS (IG, BATT, GND)

Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

Measure the voltage according to the value(s) in the table below.

Standard voltage

Standard voltage

REPLACE NETWORK GATEWAY ECU

Distance Control ECU Communication Stop Mode

DESCRIPTION Detection Item Symptom Trouble Area Distance Control ECU Communication Stop Mode Distance control" is not displayed on the &qu ...

Steering Angle Sensor Communication Stop Mode

DESCRIPTION Detection Item Symptom Trouble Area Steering Angle Sensor Communication Stop Mode "Steering angle sensor" is not displayed on ...

Other materials:

Problem symptoms table
If there are no DTCs output but the problem still occurs, check the circuits for each problem symptom in the order given in the table below and proceed to the relevant troubleshooting page. NOTICE: When replacing the brake actuator assembly, sensor, etc., turn the ignition switch off. HINT: ...

Removal
1. REMOVE ROOF DRIP SIDE FINISH MOULDING Put protective tape around the roof drip side finish moulding. Using a remover for the roof moulding, disengage of the clips both in the front and rear ends of the roof drip side finish moulding and then remove the roof drip side finish moul ...

Installation
HINT: Install the RH side by the same procedure as the LH side. 1. INSTALL REAR SPEED SENSOR (a) Clean the contacting surface of the axle hub and a new skid control sensor. NOTICE: Keep the sensor rotor clean. (b) Place the speed sensor on the axle hub so that the connector is positioned ...