Toyota Fortuner. Can Communication System (W/ Vsc) Ecm Communication Stop Mode

CHECK HARNESS AND CONNECTOR (ECM - BATTERY AND BODY GROUND)

CAN COMMUNICATION SYSTEM (w/ VSC) - ECM Communication Stop Mode

DESCRIPTION

Detection Item	Symptom	Trouble Area
ECM Communication Stop Mode	When either condition below is met: Engine is not displayed on "Bus Check". "ECM Communication Stop Mode" in "DTC Combination Table" applies.	Power source or ECM Harness or connector ECM

WIRING DIAGRAM

Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Can Communication.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Ecm Communication Stop Mode

INSPECTION PROCEDURE

HINT:

Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.

1.CHECK HARNESS AND CONNECTOR (ECM - BATTERY AND BODY GROUND)

for 1KD-FTV:
1. Disconnect the E4, E5, E6 and E7 ECM connectors.
2. Measure the resistance according to the value(s) in the table below.
  Standard Resistance:
  Tester Connection
  Condition
  Specified Condition
  E6-7 (E1) - Body ground
  Always
  Below 1 Ω
  E7-6 (E02) - Body ground
  Always
  Below 1 Ω
  E7-7 (E01) - Body ground
  Always
  Below 1 Ω
3. Measure the voltage according to the value(s) in the table below.
  Standard Voltage:
  Tester Connection
  Switch Condition
  Specified Condition
  E4-1 (+B) - Body ground
  When battery's positive (+) voltage is applied to terminal E4-8 (MREL)
  11 to 14 V
  E5-2 (BATT) - Body ground
  Always
  11 to 14 V

for 1GR-FE:

Disconnect the E14, E15 and E17 ECM connectors.
Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Condition
Specified Condition
E17-1 (E1) - Body ground
Always
Below 1 Ω
E15-6 (E02) - Body ground
Always
Below 1 Ω
E15-7 (E01) - Body ground
Always
Below 1 Ω

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

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
E14-1 (+B) - Body ground	When battery's positive (+) voltage is applied to terminal E14-8 (MREL)	11 to 14 V
E14-2 (+B2) - Body ground	When battery's positive (+) voltage is applied to terminal E14-8 (MREL)	11 to 14 V
E14-3 (BATT) - Body ground	Always	11 to 14 V

Result
Result	Proceed to
OK (for 1KD-FTV)	A
OK (for 1GR-FE)	B
NG	C

REPLACE ECM (Toyota Fortuner RM000000VW200DX.html)

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE ECM (Toyota Fortuner RM0000013Z0004X.html)

Tester Connection	Condition	Specified Condition
E6-7 (E1) - Body ground	Always	Below 1 Ω
E7-6 (E02) - Body ground	Always	Below 1 Ω
E7-7 (E01) - Body ground	Always	Below 1 Ω