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Home >> Subaru >> 2006 >> Legacy GT spec.B >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 18 (Automatic Transmission (Diagnostics) 5AT) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0882 TCM Power Input Signal Low

DTC P0882 TCM Power Input Signal Low

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

DTC DETECTING CONDITION: 

Malfunction of PVIGN power supply relay or open, short circuit of PVIGN power supply circuit.

TROUBLE SYMPTOM: 

Gear is not changed.

WIRING DIAGRAM: 

Fig 1: TCM Power Input Signal Low - Wiring Diagram
G05019839
DIAGNOSTIC PROCEDURE

Step Check Yes No
1 CHECK FUSE. 
  1. Turn the ignition switch to OFF.
  2. Remove the MAIN SBF, SBF 8 and fuse (No. 12), and then check those are not blown out.
Is the fuse blown out? Replace the fuse. If the replaced fuse has blown out easily, repair the short circuit of harness of each fuse. Go to step 2. 
2 CHECK INPUT VOLTAGE FOR PVIGN RELAY. 
Measure the voltage between PVIGN relay and chassis ground.
Connector & terminal 
(B357) No. 2 (+) - Chassis ground (-): 
(B357) No. 3 (+) - Chassis ground (-): 
Is the voltage 10 - 13 V? Go to step 3.  Repair the open circuit of harness between fuse (No. 12) and PVIGN relay.
3 CHECK HARNESS BETWEEN PVIGN RELAY OF TCM. 
Measure the resistance between TCM connector and PVIGN relay connector.
Connector & terminal 
(B54) No. 10 - (B357) No. 1: 
(B54) No. 7 - (B357) No. 4: 
(B54) No. 8 - (B357) No. 4: 
Is the resistance less than 1 Ω? Go to step 4.  Repair the open circuit of harness.
4 CHECK PVIGN POWER SUPPLY CIRCUIT. 
  1. Turn the ignition switch to ON. (engine OFF)
  2. Measure the voltage between TCM connector and chassis ground.

    Connector & terminal 

    (B54) No. 7 (+) - Chassis ground (-): 

    (B54) No. 8 (+) - Chassis ground (-): 

Is the voltage 10 - 13 V? Temporary poor contact. Recheck the harness between TCM and relay. (Lightly move the harness and check that the open or short circuit is not occurred.) Go to step 5. 
5 CHECK PVIGN RELAY OUTPUT OF TCM. 
Measure the voltage between TCM connector and chassis ground.
Connector & terminal 
(B55) No. 11 (+) - Chassis ground (-): 
Is the voltage less than 1.5 V? Replace the PVIGN relay. Replace the TCM. < Ref. to TRANSMISSION CONTROL MODULE (TCM) . >