TM 5-3805-293-23-2
0023
Table 1. Cab Electrical Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
13. One or Both Brake
Test Step 4. Check for Open Circuit
Lights Do Not Operate,
from Control Indicator Harness.
Turn Signals Operate
1. Turn ignition switch and battery
Normally - Continued
disconnect switch to the OFF
position (TM 5-3805-293-10).
2. Verify that control indicator switch
is in position SER. DRIVE (TM 5-
3805-293-10).
3. Using digital multimeter, measure
Resistance Less Than 5.0 Ohms -
resistance between control indica-
Proceed to step 4.
tor harness connector PE-C11
Resistance 5.0 Ohms or Greater -
(WP 0009, Figure 287) terminal 1
Proceed to Test Step 5.
and 2. Resistance should be less
than 5.0 ohms.
4. Using digital multimeter, measure
Resistance Less Than 5.0 Ohms -
resistance between control indica-
Proceed to Test Step 6.
tor harness connector PE-C11
Resistance 5.0 Ohms or Greater -
(WP 0009, Figure 287) terminal 9
Proceed to Test Step 5.
and 10. Resistance should be
less than 5.0 ohms.
Test Step 5. Check for Open Con-
trol Indicator Switch.
1. Disconnect the control indicator
harness connector PE-C10 (WP
0009, Figure 288) from control
indicator switch (WP 0009, Figure
289).
N OT E
The control indicator switch is a mechanical switch. Ensure that switch
levers are centered during this test. Adjust switch levers to achieve the
lowest possible resistance reading.
2. Using digital multimeter, measure
Resistance Less Than 5.0 Ohms -
resistance between control indica-
Proceed to step 3.
tor switch (WP 0009, Figure 289)
Resistance More Than 60 Ohms -
terminal F and A. Resistance
Replace control indicator switch (WP
should be between 5.0 and 60
0283).
ohms.
Connect the control indicator harness
connector PE-C11 (WP 0009, Figure
287) to cab lower wiring harness con-
nector P-C11 (WP 0009, Figure 286)
(WP 0283).
Proceed to step 4.
0023-70