DTC P0725 Engine Speed Input Circuit
WARNING: This page is about a different variant/trim than selected.
DTC DETECTING CONDITION:
Engine speed input signal circuit is open or shorted.
TROUBLE SYMPTOM:
- No lock-up occurs. (After engine is warmed-up)
- SPORT indicator light remains ON when the vehicle speed is "0".
WIRING DIAGRAM:
RESISTANCE CHART
| Step | Check | Yes | No |
|---|---|---|---|
1 CHECK HARNESS CONNECTOR BETWEEN TCM AND ECM.
|
Is the resistance less than 1 Ω? | Go to step 2. | Repair the open circuit of harness between TCM and ECM connector. |
| 2 CHECK HARNESS CONNECTOR BETWEEN TCM AND ECM. Measure the resistance of the harness between TCM connector and chassis ground. Connector & terminal (B54) No. 13 - Chassis ground: |
Is the resistance more than 1 MΩ? | Go to step 3. | Repair the short circuit of harness between TCM and ECM connector. |
3 CHECK INPUT SIGNAL FOR TCM USING SUBARU SELECT MONITOR.
|
Is the revolution value same as the tachometer reading shown on the combination meter? | Even if the SPORT indicator light is blinking, the circuit is in normal condition at this time. A temporary poor contact of connector or harness may be the cause. Repair the harness or connector in the TCM and ECM. | Go to step 4. |
| 4 CHECK POOR CONTACT. | Is there poor contact in engine speed signal circuit? | Repair the poor contact. | Go to step 5. |
| 5 CONFIRM DTC P0725. Replace the ECM with a new part. |
Does the DTC appear again, after the memory has been cleared? | Replace the TCM. < Ref. to TRANSMISSION CONTROL MODULE (TCM) . > | Replace the ECM. |