DTC P1698 - Engine Torque Control Cut Signal Circuit Malfunction (Low Input) -

WARNING: This page is about a different variant/trim than selected.

DTC DETECTING CONDITION:
- Two consecutive driving cycles with malfunction
CAUTION: After repair or replacement of malfunctioning parts, conduct Clear Memory Mode < Ref. to OPERATION , CLEAR MEMORY MODE > and INSPECTION MODE < Ref. to OPERATION , INSPECTION MODE. >
WIRING DIAGRAM:

Fig 1: Engine Torque Control Wiring Diagram
Courtesy of SUBARU OF AMERICA, INC.

DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 CHECK OUTPUT SIGNAL FROM ECM. Start engine, and warm-up the engine. Turn ignition switch to OFF. Turn ignition switch to ON. Measure voltage between ECM and chassis ground. Connector & terminal (B136) No. 15 (+) - Chassis ground (-):	Is the measured value more than 3 V?	Repair poor contact in ECM connector.	Go to step 2.
2 CHECK HARNESS BETWEEN ECM AND TCM CONNECTOR. Turn ignition switch to OFF. Disconnect connectors from ECM and TCM. Measure resistance of harness between ECM and chassis ground. Connector & terminal (B136) No. 15 - Chassis ground:	Is the measured value more than 1 MΩ?	Go to step 3.	Repair ground short circuit in harness between ECM and TCM connector.
3 CHECK HARNESS BETWEEN ECM AND TCM CONNECTOR. Measure resistance of harness between ECM and TCM connector. Connector & terminal (B136) No. 15 - (B54) No. 2:	Is the measured value less than 1 Ω?	Repair poor contact in ECM or TCM connector.	Repair open circuit in harness between ECM and TCM connector.