Fault Code Guide

Crew Cab with Valeo MD-1 Condenser, Behr Aux HVAC
Ambient
Air
Temp:
°F (°C)
Humidity
(approximate)
Dash Outlet
Temperature
(approximate)
Auxiliary
Unit Lower
Louver
Temperature
Service Port Pressures
A/C
Compressor
Status
A/C Compressor
Status Comments
High: psi
(kPa)
Low: psi
(kPa)
70 °F
(21 °C)
Low 25%
50–56°F (10–
13°C)
56–60°F
(13–16°C)
90–110
(621–758)
20–53
(138–365)
Cycling On 6 sec; Off 9 sec
Med 50%
54–60°F (12–
16°C)
57–60°F
(14–16°C)
95–115
(655–793)
23–53
(159–365)
Cycling On 9 sec; Off 8 sec
High 70%
56–63°F (13–
17°C)
57–62°F
(14–17°C)
95–120
(655–827)
24–50
(165–345)
Cycling On 14 sec; Off 5 sec
80 °F
(27 °C)
Low 25%
55–60°F (13–
16°C)
57–61°F
(14–16°C)
120–135
(827–931)
22–52
(152–359)
Cycling On 10 sec; Off 7 sec
Med 50% 51°F (11°C) 58°F (14°C) 140 (965) 26 (179) On On steady
High 65% 52°F (11°C) 60°F (16°C) 145 (1000) 28 (193) On On steady
90 °F
(32 °C)
Low 25% 51°F (11°C) 58°F (14°C) 170 (1172) 26 (179) On On steady
Med 40% 58°F (14°C) 65°F (18°C) 175 (1207) 32 (221) On On steady
100 °F
(38 °C)
Very Low 10% 54°F (12°C) 62°F (17°C) 190 (1310) 28 (193) On On steady
Low 25% 58°F (14°C) 66°F (19°C) 195 (1344) 32 (221) On On steady
Med 35% 62°F (17°C) 69°F (21°C) 200 (1379) 36 (248) On On steady
Test conditions:
• engine at 1500 rpm
• engine fan locked on
• normal A/C mode, outside air
• blower speed on high, about 13.5 vdc
• cab doors open
• hood open
• parked out of direct sunlight
• no wind speed or less than 5 mph (8 km/h)
• stabilize at each point
Table 8, Crew Cab with Valeo MD-1 Condenser, Behr Aux HVAC
Cab Heater and Air Conditioner, Valeo 83.00
Specifications
Business Class M2 Workshop Manual, Supplement 15, March 2009400/8