DTC P0890 At Self-Shut Relay Diagnosis (Low): Wiring Diagram
CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.
DIAGNOSTIC PROCEDURE
| Step | Check | Yes | No |
|---|---|---|---|
1 CHECK HARNESS.
|
Is the resistance less than 1 Ω? | Go to step 2 . | Repair the open circuit of harness. |
| 2 CHECK HARNESS. Measure the resistance between TCM connector and chassis ground. Connector & terminal (B55) No. 20 - Chassis ground: (B55) No. 2 - Chassis ground: (B55) No. 11 - Chassis ground: (B55) No. 22 - Chassis ground: |
Is the resistance 1 MΩ or more? | Go to step 3 . | Repair the short circuit of harness. |
| 3 CHECK RELAY POWER SUPPLY. Measure the voltage between self shut relay connector and chassis ground. Connector & terminal Without push button start (B494) No. 2 (+) - Chassis ground (-): (B494) No. 4 (+) - Chassis ground (-): With push button start (B225) No. 9 (+) - Chassis ground (-): (B225) No. 6 (+) - Chassis ground (-): |
Is the voltage 10 V or more? | Go to step 4 . | Repair the open or short circuit of harness. |
| 4 CHECK SELF SHUT RELAY. Measure the resistance between self shut relay terminals. Connector & terminal Without push button start (B494) No. 1 - (B494) No. 2: With push button start (B225) No. 8 - (B225) No. 9: |
Is the resistance 110 - 140 Ω? | Go to step 5 . | Replace the self shut relay. |
| 5 CHECK SELF SHUT RELAY. Measure the resistance between self shut relay terminals. Connector & terminal Without push button start (B494) No. 3 - (B494) No. 4: With push button start (B225) No. 6 - (B225) No. 7: |
Is the resistance 1 MΩ or more? | Go to step 6 . | Replace the self shut relay. |
6 CHECK INPUT SIGNAL FOR TCM.
|
Is the «Control module voltage» 10 V or more? | Current condition is normal. Check for poor contact in connectors or harnesses, and repair the defective part. | Go to step 7 . |
| 7 CHECK FOR POOR CONTACT. | Is there poor contact of the self shut relay circuit? | Repair the poor contact. | Check the TCM. |