BRAKE INDICATOR LIGHT WILL NOT LIGHT WHEN BRAKE FLUID RESERVOIR OR CLUTCH HYDRAULIC RESERVOIR LOW

TM 5-2420-224-20-1

Table 3-5. Troubleshooting (Cont)

Malfunction

Test or Inspection

Corrective Action

ELECTRICAL SYSTEM (CONT)

55. BRAKE INDICATOR LIGHT WILL NOT LIGHT WHEN BRAKE FLUID RESERVOIR OR

CLUTCH HYDRAULIC RESERVOIR LOW.

NOTE

Vehicle MASTER disconnect switch must be ON and master light switch set to

PANEL BRT. Failure to do so will cause erroneous results.

Refer to wiring diagram (page 3-177) for all wiring repair steps.

Step 1. Set parking brake.

if brake indicator light is not lit, perform Malfunction 54.

if brake indicator light is lit, go to step 2.

NOTE

Perform steps 2 thru 5 with parking brake off.

Step 2. Disconnect wire 223 (1) and wire 224 (2) at reservoirs (3) and check for

+24 VDC.

If +24 VDC is present on only wire 223, repair wiring 224

between reservoirs.

If +24 VDC is not present on either wire, repair wiring 223

between brake indicator light (in instrument cluster panel light)

and reservoir.

if +24 VDC is present on both wires, reconnect wire 223 and

wire 224 and go to step 3.

Step 3. Disconnect wire 018 (4) and wire 019 (5) at reservoirs (3) and check for

continuity to ground.

If wire 018 is short to ground but wire 019 is not, repair

wiring 019 between reservoirs.

If both wires are open to ground, repair wiring 018 between

reservoir and ground.

If both wires are short to ground, reconnect wire 018 and

wire 019 and go to step 4.

Step 4. Disconnect wire 223 (1), wire 224 (2), wire 018 (4), and wire 019 (5) at

reservoirs (3).

Step 5. Remove filler opening caps (6 and 7) and check continuity between

connectors (8 and 9) on each filler opening cap.

Replace filler opening cap that shows an open between

connectors.