TM 5-3805-293-23-2
0023
Table 1. Cab Electrical Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
12. Front and Rear Turn Sig- 4.
Turn battery disconnect switch to
nals Do Not Operate in
the ON position (TM 5-3805-293-
Either Right or Left Posi-
10).
tion, Brake Lights Oper-
5.
Use a digital multimeter, test for
Voltage Between 18 and 26 Volts -
ate Normally - Continued
voltage between cab lower wiring
Proceed to Test Step 5.
harness connector P-C20 (WP
Voltage Less Than 18 Volts - Pro-
0009, Figure 349) terminals 3 and
ceed to Test Step 2.
6. Voltage should be 18 to 26
volts.
Test Step 2. Check for Open Circuit
from Control Indicator Harness.
1. Turn battery disconnect switch to
the OFF position (TM 5-3805-
293-10).
2. Disconnect harness connector
PE-C11 (WP 0009, Figure 287)
from harness connector P-C11
(WP 0265).
3. Verify that control indicator switch
is in position SER. DRIVE (TM 5-
3805-293-10).
4. Using digital multimeter, measure
Resistance Less Than 5.0 Ohms -
resistance between control indica-
Proceed to Test Step 4.
tor harness connector PE-C11
Resistance 5.0 Ohms or Greater -
(WP 0009, Figure 287) terminal 1
Proceed to Test Step 3.
and 4. Resistance should be less
than 5.0 ohms.
Test Step 3. Check for Open Circuit
In Control Indicator Switch.
1. Disconnect the control indicator
harness connector PE-C10 (WP
0009, Figure 288) from control
indicator switch (WP 0009, Figure
289).
0023-64
