PINPOINT TEST X : The Radio Transceiver Module (RTM) Module Does Not Respond To The Scan Tool
NOTE:
Failure to disconnect the battery when instructed will result in false resistance readings. REFER to Battery, Mounting and Cables
- X1 CHECK THE Radio Transceiver Module (RTM) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: Radio Transceiver Module (RTM).
- Ignition ON.
- Measure:
Positive Lead Measurement / Action Negative Lead C3641-4 Ground
Is the voltage greater than 11 volts?
Yes GO to X2. No VERIFY the BCM fuse 26 (5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the OEM ELECTRICAL WIRING DIAGRAM INTRODUCTION to identify the possible causes of the circuit short. - X2 CHECK THE Radio Transceiver Module (RTM) GROUND CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: Negative Battery Cable.
- Measure:
Positive Lead Measurement / Action Negative Lead C3641-6 Ground
Is the resistance less than 3 ohms?
Yes GO to X3. No REPAIR the circuit. - X3 CHECK THE MS-CAN CIRCUITS BETWEEN THE Radio Transceiver Module (RTM) AND THE DLC FOR AN OPEN
Are the resistances less than 3 ohms?
Yes CONNECT the negative battery cable. GO to X4. No REPAIR the circuit in question. - X4 CHECK FOR CORRECT Radio Transceiver Module (RTM) OPERATION
- Ignition OFF.
- Disconnect and inspect the Radio Transceiver Module (RTM) connector and related in-line connectors.
- Repair:
- corrosion (replace connector or terminals - clean module pins)
- damaged or bent pins - replace terminals/pins
- pushed-out pins - replace pins as necessary
- Reconnect the Radio Transceiver Module (RTM) connector and related in-line connectors. Make sure they seat and latch correctly.
- Operate the system and verify the concern is still present.
Is the concern still present?
Yes CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, discontinue this test and follow TSB instructions. If no TSBs address this concern, INSTALL a new Radio Transceiver Module (RTM). REFER to Tire Pressure Monitoring System (TPMS) . No The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector.
