TM 5-2420-231-23-1
0032
Table 1. A/C Compressor Does Not Operate - Continued.
032
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
9. Using a digital multimeter, mea-
A/C Compressor Does Not
Resistance 5.0 Ohms or Less -
sure resistance between terminals
Replace side options wiring harness
Operate - Continued
on A/C temperature switch (WP
(WP 0255).
0007, Figure 157). Resistance
Proceed to Test Step 9.
should be 5.0 ohms or less.
Resistance Greater Than 5.0 Ohms -
Replace A/C temperature switch
(WP 0360).
Proceed to Test Step 9.
Test Step 6. Test for an Open Circuit
in Chassis Options Wiring Harness.
1. Remove air cleaner barrier curtain
(WP 0099).
2. Disconnect front console options
wiring harness connector (WP
0007, Figure 135) from chassis
options wiring harness connector
(WP 0007, Figure 136).
3. With assistance, use a digital mul-
Resistance 5.0 Ohms or Less -
timeter and measure resistance
Proceed to step 4.
between chassis options wiring
Resistance Greater Than 5.0 Ohms -
harness connector (WP 0007, Fig-
Replace chassis options wiring harness
ure 42) terminal B and chassis
(WP 0171).
options wiring harness connector
Proceed to Test Step 9.
(WP 0007, Figure 136) terminal B.
Resistance should be 5.0 ohms or
less.
4. With assistance, use a digital mul-
Resistance 5.0 Ohms or Less -
timeter to measure resistance
Proceed to step 5.
between chassis options wiring
Resistance Greater Than 5.0 Ohms -
harness connector (WP 0007, Fig-
Replace chassis options wiring harness
ure 42) terminal E, and chassis
(WP 0171).
options wiring harness connector
Proceed to Test Step 9.
(WP 0007, Figure 136) terminal D.
Resistance should be 5.0 ohms or
less.
5. Install a jumper wire between
chassis options wiring harness
connector (WP 0007, Figure 42)
terminal A and machine ground.
6. With assistance, use a digital mul-
Resistance 5.0 Ohms or Less -
timeter to measure resistance
Proceed to Test Step 7.
between chassis options wiring
Resistance Greater Than 5.0 Ohms -
harness connector (WP 0007, Fig-
Replace chassis options wiring harness
ure 153) terminal A and machine
(WP 0171).
ground. Resistance should be 5.0
Proceed to Test Step 9.
ohms or less.
0032-11