DRAFT
TM 5-4210-249-13&P-1
0070
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
TFFT04822
Step 42.
Put crew cab air conditioner/ heater control panel switch to off position (WP 0008). Turn
battery disconnect switch to OFF position (WP 0007). Remove crew cab air
conditioner/heater control panel (WP 0202). Turn battery disconnect switch to ON
position (WP 0007). Check for 22 to 28 VDC at crew cab air conditioner/ heater relay
module block, crew cab air conditioner/heater blower relay white wire terminal.
If 22 to 28 VDC are not present, replace air conditioner/heater control
box (WP 0201).
Step 43.
Check for continuity across white wire terminal from crew cab air conditioner/ heater
control panel switch white wire terminal to crew cab air conditioner/ heater relay module
block, crew cab air conditioner/heater blower relay white wire terminal.
If continuity is not present, replace air conditioner controller wire
harness (WP 0433).
Step 44.
Turn battery disconnect switch to OFF position (WP 0007). Check for continuity across
black wire terminal from crew cab air conditioner/ heater control panel switch to a
known good ground.
a.
If continuity is present, replace crew cab air conditioner/heater control
panel switch (WP 0202).
b.
If continuity is not present, replace air conditioner controller wire
harness (WP 0433).
0070-25