ATC outside temperature indicator
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
ATC outside temperature indicator
The sensor can't be adjusted, and I doubt the thermometer can, either. Have you priced a replacement sensor? It's only about the size of a gumball, and is usually just behind the grille on the driver's side. The 2 wires are usually LB & LB/Y. Some have a pointed tip.
New User
Joined: Feb 2003
Posts: 2
Likes: 0
ATC outside temperature indicator
my wife had an accident on the right side, the body shop replaced the grill and tran's cooler along with a new rh fender ever since the outside temp is way off. we haven't took the truck back yet. how does the "gumball fasten's in? I have gut feeling the the is loose and close to the engine as temp goes way up when it is shut off. btw this a 02 mountianeer. rides good but doesn't look as good as my ride, a 03 EB EXPLORER
Thanks ( VOLLIE FIREFIGHTER FOR 30 yrs.)
Thanks ( VOLLIE FIREFIGHTER FOR 30 yrs.)
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
ATC outside temperature indicator
It just has a plastic pin with the thin rings on it that presses into a hole in the core support. It's so small, it practically fits INSIDE the harness connector.
I just discovered some info about the system because of another thread. Here's an excerpt from the '96 service CD - it's about the overhead console on '95-96 EB Broncos, but I'm sure yours is the same system.
The temperature display operates through the use of a thermometer sensor (15A022) mounted behind the front bumper/grille. The display can be changed from English to metric units.
To update the temperature, the module processes data from the sensor to make sure engine heat does not affect the displayed temperature. Upon starting the vehicle, the module checks the temperature and how long the ignition switch has been off. These parameters are described by one of three groups below.
Engine Cold
If ignition has been on for less than five minutes, and was previously off for longer than two hours, the engine is cold and does not affect the temperature sensor. Current sensor data is used.
Engine Warm, Updated Temperature Cooler
If ignition has been on for longer than five minutes or if the ignition was off for less than two hours, the engine compartment may be warm from the heat of the engine. The current temperature is displayed only if it is less than the stored temperature reading.
Engine Warm, Updated Temperature Warmer
If the sensor data indicates a higher temperature, the module uses a high-speed counter to monitor vehicle speed to determine whether engine heat is causing erroneous readings. The counter is incremented when the speed is greater than 53 km/h (33 mph) and decremented when the speed is between 16 and 53 km/h (10-33 mph). If the speed is less than 16 km/h (10 mph), the counter is reset, and the displayed temperature is not updated from its last reading. If the counter is greater than two minutes, the currently sensed temperature is displayed. If the high-speed counter has counted less than two minutes, the temperature can increase only one degree per minute.
If the temperature sensor is short- or open-circuited, the display will read SC or OC, respectively. If the temperature drops below 3°C (38°F), or is below 3°C (38°F) upon power-up, the display will alternate between displaying ICE and the temperature. The display will alternate every two seconds for a time of one minute.
I just discovered some info about the system because of another thread. Here's an excerpt from the '96 service CD - it's about the overhead console on '95-96 EB Broncos, but I'm sure yours is the same system.
The temperature display operates through the use of a thermometer sensor (15A022) mounted behind the front bumper/grille. The display can be changed from English to metric units.
To update the temperature, the module processes data from the sensor to make sure engine heat does not affect the displayed temperature. Upon starting the vehicle, the module checks the temperature and how long the ignition switch has been off. These parameters are described by one of three groups below.
Engine Cold
If ignition has been on for less than five minutes, and was previously off for longer than two hours, the engine is cold and does not affect the temperature sensor. Current sensor data is used.
Engine Warm, Updated Temperature Cooler
If ignition has been on for longer than five minutes or if the ignition was off for less than two hours, the engine compartment may be warm from the heat of the engine. The current temperature is displayed only if it is less than the stored temperature reading.
Engine Warm, Updated Temperature Warmer
If the sensor data indicates a higher temperature, the module uses a high-speed counter to monitor vehicle speed to determine whether engine heat is causing erroneous readings. The counter is incremented when the speed is greater than 53 km/h (33 mph) and decremented when the speed is between 16 and 53 km/h (10-33 mph). If the speed is less than 16 km/h (10 mph), the counter is reset, and the displayed temperature is not updated from its last reading. If the counter is greater than two minutes, the currently sensed temperature is displayed. If the high-speed counter has counted less than two minutes, the temperature can increase only one degree per minute.
If the temperature sensor is short- or open-circuited, the display will read SC or OC, respectively. If the temperature drops below 3°C (38°F), or is below 3°C (38°F) upon power-up, the display will alternate between displaying ICE and the temperature. The display will alternate every two seconds for a time of one minute.
