1997 SUBARU LEGACY Service Repair Manual

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Page 2433 of 3342

SUBARU LEGACY 1997 Service Repair Manual OBD0439A 4) Measure resistance of harness connector between TCM and body to make sure that circuit does not short. Connector & terminal / Specified resistance: (B55) No. 14—Body/1MΩ, or more (B55)

Page 2434 of 3342

SUBARU LEGACY 1997 Service Repair Manual F: TROUBLE CODE 21 —ATF TEMPERATURE SENSOR— DIAGNOSIS: Input signal circuit of TCM to ATF temperature sensor is open or shorted. TROUBLE SYMPTOM: Excessive shift shock 1. Check harness and connect

Page 2435 of 3342

SUBARU LEGACY 1997 Service Repair Manual OBD0388A 1. CHECK HARNESS AND CONNECTORS BETWEEN TCM AND ATF TEMPERATURE SENSOR. 1) Turn ignition switch to OFF. 2) Disconnect connectors from TCM and transmission. 3) Measure resistance of harness co

Page 2436 of 3342

SUBARU LEGACY 1997 Service Repair Manual OBD0384A 3. CHECK INPUT SIGNAL FOR TCM. 1) Turn ignition switch ON (with engine OFF) and measure signal voltage input of TCM. 2) Start and warm-up the engine. Measure signal voltage input of TCM. Conn

Page 2437 of 3342

SUBARU LEGACY 1997 Service Repair Manual G: TROUBLE CODE 22 —MASS AIR FLOW SIGNAL— DIAGNOSIS: Input signal circuit of TCM from ECM is open or shorted. 1. Check trouble code on engine side. <Ref. to 2-7 On-Board Diagnostics II System [T10

Page 2438 of 3342

SUBARU LEGACY 1997 Service Repair Manual B3M0476A 2. CHECK HARNESS CONNECTOR BETWEEN TCM AND ECM. 1) Turn ignition switch to OFF. 2) Disconnect connectors from TCM and ECM. 3) Measure resistance of harness connector between TCM and ECM. Conn

Page 2439 of 3342

SUBARU LEGACY 1997 Service Repair Manual H: TROUBLE CODE 23 —ENGINE SPEED SIGNAL— DIAGNOSIS: Engine speed input signal circuit is open or shorted. TROUBLE SYMPTOM: No lock-up (after engine warm-up) AT OIL TEMP indicator remains on when

Page 2440 of 3342

SUBARU LEGACY 1997 Service Repair Manual B3M0477A 1. CHECK HARNESS AND CONNECTOR BETWEEN TCM AND ECM. 1) Turn ignition switch to OFF. 2) Disconnect connectors from TCM and ECM. 3) Measure resistance of harness connector between TCM and ECM.
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