Two Way Radio - Intermittent Poor Reception
NUMBER: 08-32-99GROUP: Electrical
DATE: Oct. 1, 1999
SUBJECT:
Radio Interference To/From Two-Way Radio Receivers
OVERVIEW:
This bulletin involves installing a revised Airbag Control Module (ACM).
MODELS:
1998 - 1999 (BR/BE) Ram Truck
SYMPTOM/CONDITION:
Customers may complain of intermittent poor reception on their two-way radios.
NOTE:
THIS CONDITION DOES NOT AFFECT THE OPERATION OF ANY AM OR FM BAND RADIO.
DISCUSSION:
Radio receivers from approximately 30 MHZ to 50 MHZ may be susceptible to Radio
Frequency Interference (RFI) from the Airbag Control Module (ACM).
The following services are within this band range of 30 MHZ to 50 MHZ:
^ Public Service Low Band VHF (30 - 50 MHZ)
^ Six Meter Amateur Radio Band (50 - 54 MHZ)
DIAGNOSIS:
NOTE:
TECHNICAL SERVICE BULLETIN 08-06-99, DATED MARCH 5, 1999, ADDRESSES TWO-WAY RADIO INTERFERENCE FROM THE FUEL PUMP MODULE AND SHOULD BE PERFORMED PRIOR TO PERFORMING THIS TECHNICAL SERVICE BULLETIN.
Turn the ignition key to the RUN position. Operate the two-way radio and monitor for RFI/static/poor reception. If RFI is present with the ignition key in the RUN position, perform the following Repair Procedure.
NOTE:
THE INTERFERENCE MAY BE INTERMITTENT. IF THE CONDITION IS NOT PRESENT DURING THE DIAGNOSIS, REPEAT THE DIAGNOSIS SEVERAL TIMES TO ATTEMPT TO RE-CREATE THE CONDITION.
NOTE:
IT IS IMPORTANT TO IDENTIFY WHICH COMPONENTS ARE EMITTING RFI. AFTER A REPAIR HAS BEEN MADE, PERFORM THE DIAGNOSIS AGAIN TO IDENTIFY IF ANY OTHER COMPONENT IS PRODUCING RFI. SOME VEHICLES MAY REQUIRE ADDITIONAL DIAGNOSIS.
PARTS REQUIRED:
1 56043128AE Module, Airbag Control
REPAIR PROCEDURE:
THIS REPAIR IS COMPATIBLE WITH DAIMLERCHRYSLER'S MOBILE SERVICE PROGRAM AND DOES NOT REQUIRE HOISTS OR OTHER FULL SERVICE FACILITY SPECIAL EQUIPMENT.
1. Replace the ACM with p/n 56043128AE. Refer to the appropriate Ram Truck Service Manual, Group 8M, for information regarding Airbag Control Module Removal And Installation procedures.
POLICY: Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation No: 08-45-09-92 0.3 Hrs.
FAILURE CODE: P8 - New Part