ECM Communication Stop Mode

CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: ECM Communication Stop Mode

ECM Communication Stop Mode

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK VEHICLE TYPE
(a) Check the engine model of the vehicle.
Result:

B -- CHECK CAN BUS LINE FOR DISCONNECTION (ECM SUB BUS LINE)
A -- Continue to next step.

2. CHECK CAN BUS LINE FOR DISCONNECTION (ECM SUB BUS LINE)
(a) Turn the engine switch off.
(b) Disconnect the ECM connector (A6).

NG -- REPAIR OR REPLACE ECM SUB BUS LINE OR CONNECTOR (CAN-H, CAN-L)
OK -- Continue to next step.

3. CHECK WIRE HARNESS (+B2, +B, E1)
(a) Disconnect the ECM connectors.
(b) Measure the resistance according to the value(s) in the table below.

Standard resistance:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE ECM
4. CHECK CAN BUS LINE FOR DISCONNECTION (ECM SUB BUS LINE)
(a) Turn the engine switch off.
(b) Disconnect the ECM connector (A6).

NG -- REPAIR OR REPLACE ECM SUB BUS LINE OR CONNECTOR (CAN-H, CAN-L)
OK -- Continue to next step.

5. CHECK WIRE HARNESS (+B1, +B, E1)
(a) Disconnect the ECM connector (E7).

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

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

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE ECM