- Engine is not displayed on "CAN Bus Check".
- Applies to "ECM Communication Stop Mode" in "DTC Combination Table".
| Last Modified: 11-29-2007 | 1.6 J | |
| Service Category: Power Source/Network | Section: Networking | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000002VTC002X |
| Title: NETWORKING: CAN COMMUNICATION SYSTEM: DESCRIPTION (2008 Sequoia) | ||
|
ECM Communication Stop Mode |
DESCRIPTION
|
Detection Item |
Symptom |
Trouble Area |
|---|---|---|
|
ECM Communication Stop Mode |
When either condition below is met: |
|
WIRING DIAGRAM
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.
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (ECM - BATTERY AND BODY GROUND) |
|
(a) Disconnect the A27 and D56 ECM connectors. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D56-81 (E1) - Body ground |
Always |
Below 1 Ω |
|
D56-42 (E02) - Body ground |
||
|
D56-43 (E01) - Body ground |
||
|
D56-82 (ME01) - Body ground |
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A27-1 (BATT) - Body ground |
Always |
11 to 14 V |
|
A27-2 (+B2) - Body ground |
Battery positive (+) voltage is applied to terminal MREL |
|
|
A27-3 (+B) - Body ground |
Battery positive (+) voltage is applied to terminal MREL |
|
|
A27-34 (MREL) - Body ground |
Ignition switch off |
Result
|
Result |
Proceed to |
|---|---|
|
OK (for 2UZ-FE) |
A |
|
OK (for 3UR-FE) |
B |
|
NG |
C |
|
|
|