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B2470
Cellular Phone Antenna Circuit Malfunction
VCIM
DTC B2470
DTC B2470 04: Cellular Phone Antenna Circuit Malfunction Open Circuit
The cellular antenna is connected to the communication interface module (CIM) with a RG-58 coax cable. The CIM polls the data from the cellular antenna once every second.
Circuit/System Testing
Ignition OFF, disconnect the cellular antenna coax from the CIM module and the cellular antenna.
Ignition ON, test for less than 1 volt between the antenna coax center terminal and ground.
? If greater than the specified range, replace the antenna coax.
Ignition ON, test for less than 1 volt between the antenna coax outer shield and ground.
? If greater than the specified range, replace the antenna coax.
Test for infinite resistance between the antenna coax center terminal and ground.
? If less than the specified value, replace the antenna coax
Test for infinite resistance between the antenna coax outer shield and ground.
? If less than the specified value, replace the antenna coax
Test for less than 5 ohms at the cellular antenna coax center terminal from end to end.
? If greater than specified value, replace the cellular antenna coax cable.
Test for less than 5 ohms at the cellular antenna coax outer shield from end to end.
? If greater than specified value, replace the cellular antenna coax cable.
Test for infinite resistance between the antenna coax center terminal and the outer shield.
? If less than specified value, replace the cellular antenna coax cable.
If coax cable tests normal, replace the cellular antenna.
Clear the DTCs and operate the vehicle within the conditions for running the DTC. Verify DTC B2470 does not set.
? If the DTC sets, replace the CIM.
if part is still left where antenna was take a pair of pliers and turn counterclockwise(left) to remove old piece left. go to most auto parts stores and they should have an original equipment replacement antenna
If the antenna motor makes noise, then the antenna motor is ok, and the antenna is stuck, oil it with a light lubricating oil (3-in-1, Marvel Mystery oil, store brands, etc.)
If antenna motor makes no sound, replace. Antenna motor.
I don't have a service guide for this car to help you replace the antenna motor. Usually replacing these motors are a screwdriver job, but you may need to buy a special "antenna wrench" to remove a specialized keyed nut holding the antenna to the body.
Remove rear retaining screws of RH front wheel splash shield for access to antenna lower retaining bolt.
Remove lower retaining bolt.
Remove radio antenna nut (18865) from top of motor tube and remove electric antenna through fender/splash shield access.
Disconnect signal cable and motor wire connector(s).
Installation
To install, reverse Removal procedure.
Tighten top radio antenna nut to 6-8 Nm (54-70 lb-in).
Tighten lower electric antenna retaining bolt to 5.8-7.8 Nm (51-69 lb-in).
Check operation of electric antenna and radio chassis .
Automatic Electric Antenna
mast
Mast, Power
NOTE: A power antenna mast which is bent or broken can be replaced without replacing the motor and tube assembly. Removal
Remove radio antenna nut (18865) and radio antenna stanchion (18919) .
Loosen retaining nut inside tube using 14 mm (9/16 inch) socket, and slide nut part-way up mast.
Raise antenna to run plastic drive wire at bottom of mast out of motor. Note direction of teeth on plastic drive wire.
Saw off damaged portion of antenna mast. Remove burrs from mast and slide nut and contact tube off stationary tube.
Installation
With the teeth on the plastic drive wire facing toward motor on antenna, push end of plastic drive wire of replacement mast assembly down into tube. Push it around curve at bottom of tube until end enters drive mechanism.
Run motor down while pushing on plastic drive wire until about 305 mm (12 inch) of wire has been drawn into the tube. Stop motor and insert bottom of antenna mast into tube. Lower mast.
Slide contact tube and radio antenna nut down antenna mast. Tighten nut to 0.45 Nm (4 lb-in).
Raise and lower antenna several times to ensure proper operation.
There should be a nut at the base of the antenna or in the car right under the antenna. take that off. then there might be two ways to do it. 1. you might have to run new antenna wire to under the dash board. or the antenna will need the adapter right under where the antenna sits.
well.. few old mobile phone antenna was easy to remover i remmber old day when my father use to own Erricson moble phone you can can the antenna and plug it out simply up wards but new phone i heard that we must unscrew them to replace the problem . better get it to the repair guy . i am sure he won't charge you much for this
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