TACHOGRAPH LIGHT DOES NOT WORK

TM 9-2320-270-20-1

TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

28. TACHOGRAPH LIGHT DOES NOT WORK.

NOTE

If instrument panel gage lights do not work, do steps 3 thru 8 under INSTRUMENT PANEL

GAGE LIGHT DOES NOT WORK (page 3-77).

If all three tachograph lights do not work, go to step 2.

Remove tachograph lamp (page 4-283). Using multimeter set at RX1, put probes

Step 1.

on contact (1) and lamp housing (2).

If meter does not read zero, replace lamp.

Install tachograph lamp (page 4-283). Open instrument panel (page 4-244) and

Step 2.

pull plug (3) out of tachograph (4). Using multimeter set at RX1, put probes on

plug terminal (5) and panel (6), and on plug terminal (7) and panel (6).

Push plug (3) into tachograph (4), close instrument panel

(page 4-244) and notify direct support maintenance.

TA239660

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