1.CHECK LAN SYSTEM.
Perform the diagnosis for LAN system. 
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Is there any fault in LAN system?
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Perform the diagnosis according to DTC for LAN system.
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2.CHECK REVERSE SIGNAL USING SUBARU SELECT MONITOR.
1) Select {Current Data Display & Save} in Subaru Select Monitor.
2) Read the indication of reverse signal.
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Is OFF displayed when the shift lever is placed in any position other than reverse, and is ON displayed in reverse position?
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3.CHECK BACK-UP LIGHT ILLUMINATION.
1) Turn the ignition switch to ON.
2) Place the shift lever in reverse position.
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Does the back-up light illuminate?
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Repair the back-up light circuit.
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4.CHECK HARNESS BETWEEN BODY INTEGRATED UNIT AND BACK-UP LIGHT SWITCH.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from body integrated unit and back-up light switch.
3) Measure the resistance of harness between body integrated unit and back-up light switch connector.
Connector & terminal
Gasoline engine non-turbo model, diesel engine model
(B280) No. 18 — (B24) No. 1:
Gasoline engine turbo model
(B280) No. 18 — (T13) No. 2:
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Is the resistance less than 0.5 Ω?
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Replace the back-up light switch.
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Repair the harness between body integrated unit and back-up light switch connector.
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5.CHECK VDCCM&H/U.
1) Connect all connectors.
2) Clear the memory.
3) Perform the Inspection Mode.
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Is the same DTC displayed?
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Replace the VDCCM only.
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6.CHECK OTHER DTC DETECTION.
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Is any other DTC displayed?
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Perform the diagnosis according to DTC.
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Temporary poor contact occurs.
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