DESCRIPTION
There may be an open circuit in the CAN main wire and/or DLC3 branch wire when the resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3 is 69 Ω or higher.
Symptom |
Trouble Area |
---|---|
The resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3 is 69 Ω or higher. |
|
*: for 4WD
WIRING DIAGRAM
CAUTION / NOTICE / HINT
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. |
DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL |
(a) Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and branch wire.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See page ).
|
2. |
CHECK FOR OPEN IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR - DLC3) |
(a) Disconnect the F59 No. 2 junction connector connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
F59-4 (CANH) - F13-6 (CANH) |
Ignition switch off |
Below 1 Ω |
F59-15 (CANL) - F13-14 (CANL) |
Ignition switch off |
Below 1 Ω |
*a |
Rear view of wire harness connector (to No. 2 Junction Connector) |
*b |
Front view of DLC3 |
NG |
REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DLC3 (CANH, CANL) |
|
3. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 2 JUNCTION CONNECTOR - COMBINATION METER ASSEMBLY) |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
Result |
Proceed to |
---|---|
OK |
A |
NG (for 2WD) |
B |
NG (for 4WD) |
C |
B |
GO TO STEP 5 |
C |
GO TO STEP 7 |
|
4. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 2 JUNCTION CONNECTOR - ECM) |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
OK |
REPAIR OR REPLACE NO. 2 JUNCTION CONNECTOR |
NG |
GO TO STEP 12 |
5. |
CONNECT CONNECTOR |
(a) Reconnect the F59 No. 2 junction connector connector.
|
6. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (COMBINATION METER ASSEMBLY - NO. 2 JUNCTION CONNECTOR) |
(a) Disconnect the F14 combination meter assembly connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
F14-1 (CANH) - F14-2 (CANL) |
Ignition switch off |
108 to 132 Ω |
*a |
Front view of wire harness connector (to Combination Meter Assembly) |
OK |
REPLACE COMBINATION METER ASSEMBLY |
NG |
REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO COMBINATION METER ASSEMBLY (COMBINATION METER ASSEMBLY - NO. 2 JUNCTION CONNECTOR) |
7. |
CONNECT CONNECTOR |
(a) Reconnect the F59 No. 2 junction connector connector.
|
8. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 1 JUNCTION CONNECTOR - COMBINATION METER ASSEMBLY) |
(a) Disconnect the A36 No. 1 junction connector connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
A36-3 (CANH) - A36-6 (CANL) |
Ignition switch off |
108 to 132 Ω |
*a |
Rear view of wire harness connector (to No. 1 Junction Connector) |
NG |
GO TO STEP 10 |
|
9. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 1 JUNCTION CONNECTOR - NO. 2 JUNCTION CONNECTOR) |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
OK |
REPAIR OR REPLACE NO. 1 JUNCTION CONNECTOR |
NG |
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 1 JUNCTION CONNECTOR - NO. 2 JUNCTION CONNECTOR) |
10. |
CONNECT CONNECTOR |
(a) Reconnect the A36 No. 1 junction connector connector.
|
11. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (COMBINATION METER ASSEMBLY - NO. 1 JUNCTION CONNECTOR) |
(a) Disconnect the F14 combination meter assembly connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
F14-1 (CANH) - F14-2 (CANL) |
Ignition switch off |
108 to 132 Ω |
*a |
Front view of wire harness connector (to Combination Meter Assembly) |
OK |
REPLACE COMBINATION METER ASSEMBLY |
NG |
REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO COMBINATION METER ASSEMBLY (COMBINATION METER ASSEMBLY - NO. 1 JUNCTION CONNECTOR) |
12. |
CONNECT CONNECTOR |
(a) Reconnect the F59 No. 2 junction connector connector.
|
13. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 4 JUNCTION CONNECTOR - ECM) |
(a) Disconnect the G13 No. 4 junction connector connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
G13-5 (CANH) - G13-16 (CANL) |
Ignition switch off |
108 to 132 Ω |
*a |
Rear view of wire harness connector (to No. 4 Junction Connector) |
NG |
GO TO STEP 15 |
|
14. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 4 JUNCTION CONNECTOR - NO. 2 JUNCTION CONNECTOR) |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
OK |
REPAIR OR REPLACE NO. 4 JUNCTION CONNECTOR |
NG |
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 4 JUNCTION CONNECTOR - NO. 2 JUNCTION CONNECTOR) |
15. |
CONNECT CONNECTOR |
(a) Reconnect the G13 No. 4 junction connector connector.
|
16. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 3 JUNCTION CONNECTOR - ECM) |
(a) Disconnect the F60 No. 3 junction connector connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
F60-2 (CANH) - F60-13 (CANL) |
Ignition switch off |
108 to 132 Ω |
*a |
Rear view of wire harness connector (to No. 3 Junction Connector) |
NG |
GO TO STEP 18 |
|
17. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 3 JUNCTION CONNECTOR - NO. 4 JUNCTION CONNECTOR) |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
OK |
REPAIR OR REPLACE NO. 3 JUNCTION CONNECTOR |
NG |
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 3 JUNCTION CONNECTOR - NO. 4 JUNCTION CONNECTOR) |
18. |
CONNECT CONNECTOR |
(a) Reconnect the F60 No. 3 junction connector connector.
|
19. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (ECM - NO. 3 JUNCTION CONNECTOR) |
(a) Disconnect the F50 ECM connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
F50-32 (CANH) - F50-31 (CANL) |
Ignition switch off |
108 to 132 Ω |
*a |
Rear view of wire harness connector (to ECM) |
OK |
REPLACE ECM |
NG |
REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO ECM (ECM - NO. 3 JUNCTION CONNECTOR) |
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use the following procedure to troubleshoot the front power seat control
system.
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
NEXT ...
Inspection
INSPECTION
PROCEDURE
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(a) Using a dial indicator, measure the inside diameter of the oil pump
body bush.
Maximum inside diameter:
38.188 mm (1.50 in.)
If the inside diameter is m ...