CAN Communication Circuit Check: Procedure: Wiring Diagram
WARNING: This page is about a different car, the 2016 Subaru Outback and 2016 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.
- For the coupling connector, refer to "WIRING SYSTEM".
- CAN communication system < Ref. to appropriate wiring diagram in SYSTEM WIRING DIAGRAM article. >
DIAGNOSTICS PROCEDURE
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BASIC DIAGNOSTIC PROCEDURE. Check that the basic diagnosis has been performed up to STEP 3.
NOTE:
Possible defective parts can be narrowed easily by inspection using Subaru Select Monitor before performing "CHECK CAN COMMUNICATION CIRCUIT" using a tester.
|
Was the basic diagnostic procedure performed? | Go to step 2 . | Perform the basic diagnostic procedure. < Ref. to PROCEDURE , Basic Diagnostic Procedure. > |
| 2 CHECK FROM DATA LINK CONNECTOR. Using the tester, measure the resistance between terminals. Connector & terminal (B40) No. 6 - Chassis ground: (B40) No. 14 - Chassis ground: |
Is the resistance 10 Ω or less? | Check for ground short. < Ref. to GROUND SHORT INSPECTION , INSPECTION, CAN Communication Circuit Check. > | Go to step 3 . |
3 CHECK FROM DATA LINK CONNECTOR.
|
Is the voltage 5 V or less? | Go to step 4 . | Check for battery short. < Ref. to BATTERY SHORT INSPECTION , INSPECTION, CAN Communication Circuit Check. > |
4 CHECK FROM DATA LINK CONNECTOR.
|
Is the resistance 52 Ω or less? | Perform the inspection for resistance of 52 Ω or less. < Ref. to 52 Ω OR LESS , INSPECTION, CAN Communication Circuit Check. > | Go to step 5 . |
| 5 CHECK FROM DATA LINK CONNECTOR. Using the tester, measure the resistance between terminals. Connector & terminal (B40) No. 6 - No. 14: |
Is the resistance 62 Ω or more? | Perform the inspection for resistance of 62 Ω or more. < Ref. to 62 Ω OR MORE , INSPECTION, CAN Communication Circuit Check. > | If the display of CAN system U-code disappears from the current malfunction, the CAN network is currently normal. If the U-code has detected as current malfunction, related lines may be open. Perform the inspection for the related line corresponding to the detected DTC. < Ref. to LIST , CAN Communication Circuit Check. > |
- For the coupling connector, refer to "WIRING SYSTEM".
- CAN communication system < Ref. to appropriate wiring diagram in SYSTEM WIRING DIAGRAM article. >
DIAGNOSTICS PROCEDURE
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BASIC DIAGNOSTIC PROCEDURE. Check that the basic diagnosis has been performed up to STEP 3.
NOTE:
Possible defective parts can be narrowed easily by inspection using Subaru Select Monitor before performing "CHECK CAN COMMUNICATION CIRCUIT" using a tester.
|
Was the basic diagnostic procedure performed? | Go to step 2 . | Perform the basic diagnostic procedure. < Ref. to PROCEDURE , Basic Diagnostic Procedure. > |
| 2 CHECK FROM IMPACT SENSOR CONNECTOR. Using the tester, measure the resistance between terminals. Connector & terminal (i188) No. 5 - Chassis ground: (i188) No. 6 - Chassis ground: |
Is the resistance 10 Ω or less? | Check for ground short. < Ref. to GROUND SHORT INSPECTION , INSPECTION, CAN Communication Circuit Check. > | Go to step 3 . |
3 CHECK FROM IMPACT SENSOR CONNECTOR.
|
Is the voltage 5 V or less? | Go to step 4 . | Check for battery short. < Ref. to BATTERY SHORT INSPECTION , INSPECTION, CAN Communication Circuit Check. > |
4 CHECK FROM IMPACT SENSOR CONNECTOR.
|
Is the resistance 52 Ω or less? | Perform the inspection for resistance of 52 Ω or less. < Ref. to 52 Ω OR LESS , INSPECTION, CAN Communication Circuit Check. > | Go to step 5 . |
| 5 CHECK FROM IMPACT SENSOR CONNECTOR. Using the tester, measure the resistance between terminals. Connector & terminal (i188) No. 5 - (i188) No. 6: |
Is the resistance 62 Ω or more? | Perform the inspection for resistance of 62 Ω or more. < Ref. to 62 Ω OR MORE , INSPECTION, CAN Communication Circuit Check. > | If the display of CAN system U-code disappears from the current malfunction, the CAN network is currently normal. If the U-code has detected as current malfunction, related lines may be open. Perform the inspection for the related line corresponding to the detected DTC. < Ref. to LIST , CAN Communication Circuit Check. > |