The reason the keypad works is that it is hard wired to the VSM
Where as the remotes are wireless
You are correct in that they use the SAME MODULE (VSM) but the keypad and the remotes are TWO different inputs
Read the following (copied from the 2003 service manual
)
Remote Transmitter Programming
NOTE: All remote transmitters must be programmed at the same time.
NOTE: Programming (or reprogramming) of the remote transmitters can be accomplished using a diagnostic tool or by carrying out the following steps:
- The vehicle must be electronically unlocked before entering program mode using the remote transmitter, keyless entry keypad (if equipped) or door lock control switch while the driver door is open.
2. Turn the key from OFF to RUN 8 times within 10 seconds, with the eighth
turn ending in RUN. If the module has successfully entered program
mode, it will lock and then unlock all doors.
3. Within 20 seconds, press any button on a remote transmitter, and the
doors will lock and then unlock to confirm that each remote transmitter
has been programmed. Repeat this step for each remote transmitter.
4. If the door locks do not respond for any remote transmitter, wait several
seconds and press the button again. If the door locks still fail to respond,
refer to Inspection and Verification in this section. (Make sure that no
more than the maximum number of remote transmitters are attempted to
be programmed.)
5. Exiting the programming mode is accomplished if one of the following
occurs:
- The key transitions to the OFF position.
- 20 seconds have passed since entering programming mode or since the last remote transmitter was programmed.
- The maximum number of remote transmitters have been programmed.
Inspection and Verification
- Verify the customer concern by operating the system.
- Visually inspect for obvious signs of mechanical or electrical damage.
Visual Inspection Chart
Mechanical Electrical
- Central junction box (CJB) fuse(s):
- Circuitry
- Relays
- Remote transmitter
- Keyless entry keypad
- Vehicle security module
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the diagnostic tool does not power up, refer to the diagnostic tool manual.
- Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
- SCP, UBP or ISO; all elctrconic control unitw, no response/not equipped, refer to Section 418-00 .
- No response, not equipped for vehicle security module, refer to Section 419-10 .
- System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out the self-test diagnostics for the vehicle security module.
- If the DTCs retrieved are related to the concern, go to the Vehicle Security Module Diagnostic Trouble Code (DTC) Index to continue diagnostics.
- If DTCs are retrieved that are not found in the following Vehicle Security Module Diagnostic Trouble Code (DTC) Index, refer to the Master Vehicle Security Module Diagnostic Trouble Code (DTC) Index in Section 419-10 .
- If no DTCs related to the concern are retrieved, proceed to the Symptom Chart to continue diagnostics.
Vehicle Security Module Diagnostic Trouble Code (DTC) Index
DTC Description Source Action
B1300 Power Door Lock Circuit Failure Vehicle Security Module
Go To Pinpoint Test A .
B1311 Power Door Unlock Circuit Failure Vehicle Security Module
Go To Pinpoint Test A .
B1321 Driver Door Ajar Circuit Short to Battery Vehicle Security Module
Go To Pinpoint Test D .
B1333 Liftgate Ajar Circuit Short to Battery Vehicle Security Module
Go To Pinpoint Test D .
B1337 Door Ajar RR Circuit Short to Battery Vehicle Security Module
Go To Pinpoint Test D .
B1573 Door Ajar LR Circuit Short to Battery Vehicle Security Module
Go To Pinpoint Test D .
B2425 Remote Transmitter Out of Sync Vehicle Security Module
Go To Pinpoint Test E .
B2675 Keypad_B Switch Circuit Failure Vehicle Security Module
Go To Pinpoint Test B .
B2676 Keypad _C Switch Circuit Failure Vehicle Security Module
Go To Pinpoint Test B .
B2695 Keypad_A Switch Circuit Failure Vehicle Security Module
Go To Pinpoint Test B .
Inspection and Verification
- Verify the customer concern by operating the system.
- Visually inspect for obvious signs of mechanical or electrical damage.
Visual Inspection Chart
Mechanical Electrical
- Central junction box (CJB) fuse(s):
- Circuitry
- Relays
- Remote transmitter
- Keyless entry keypad
- Vehicle security module
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the diagnostic tool does not power up, refer to the diagnostic tool manual.
- Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
- SCP, UBP or ISO; all elctrconic control unitw, no response/not equipped, refer to Section 418-00 .
- No response, not equipped for vehicle security module, refer to Section 419-10 .
- System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out the self-test diagnostics for the vehicle security module.
- If the DTCs retrieved are related to the concern, go to the Vehicle Security Module Diagnostic Trouble Code (DTC) Index to continue diagnostics.
- If DTCs are retrieved that are not found in the following Vehicle Security Module Diagnostic Trouble Code (DTC) Index, refer to the Master Vehicle Security Module Diagnostic Trouble Code (DTC) Index in Section 419-10 .
- If no DTCs related to the concern are retrieved, proceed to the Symptom Chart to continue diagnostics.
Vehicle Security Module Diagnostic Trouble Code (DTC) Index
DTC Description Source Action
B1300 Power Door Lock Circuit Failure Vehicle Security Module
Go To Pinpoint Test A .
B1311 Power Door Unlock Circuit Failure Vehicle Security Module
Go To Pinpoint Test A .
B1321 Driver Door Ajar Circuit Short to Battery Vehicle Security Module
Go To Pinpoint Test D .
B1333 Liftgate Ajar Circuit Short to Battery Vehicle Security Module
Go To Pinpoint Test D .
B1337 Door Ajar RR Circuit Short to Battery Vehicle Security Module
Go To Pinpoint Test D .
B1573 Door Ajar LR Circuit Short to Battery Vehicle Security Module
Go To Pinpoint Test D .
B2425 Remote Transmitter Out of Sync Vehicle Security Module
Go To Pinpoint Test E .
B2675 Keypad_B Switch Circuit Failure Vehicle Security Module
Go To Pinpoint Test B .
B2676 Keypad _C Switch Circuit Failure Vehicle Security Module
Go To Pinpoint Test B .
B2695 Keypad_A Switch Circuit Failure Vehicle Security Module
Go To Pinpoint Test B .
Symptom Chart
- The doors do not lock/unlock using the remote transmitter
- Remote transmitter battery.
- Remote transmitter.
- Remote transmitter programming.
- Aftermarket system.
- High power devices.
- TV/radio transmission towers.
- Vehicle security module.
- Remote keyless entry transmitter is out of synchronization
- Remote transmitter.
- Vehicle security module.
- Remote transmitter button pressed a substantial amount of times while outside the range of the vehicle.
PINPOINT TEST E: THE REMOTE KEYLESS ENTRY TRANSMITTER IS OUT OF SYNCHRONIZATION
NOTE: All remote transmitters must be present to begin diagnosis of the remote keyless entry (RKE) system.
Test Step Result / Action to Take
E1 RESYNCHRONIZE THE INOPERATIVE REMOTE TRANSMITTER
- Key in OFF position.
- Press any button on the inoperative remote transmitter four times consecutively within 30 seconds.
- Does the remote transmitter operate correctly now?
Yes
The system is OK. CLEAR the DTCs. TEST the system for normal operation.
No
GO to E2 .
E2 CHECK FOR A SECOND REMOTE TRANSMITTER
- Check for another remote transmitter that operates with the vehicle.
- Is there another remote transmitter that operates with the vehicle?
Yes
GO to E3 .
No
GO to E4 .
E3 RESYNCHRONIZE THE INOPERATIVE REMOTE TRANSMITTER USING THE SECOND REMOTE TRANSMITTER
- Key in OFF position.
- Press any button on the operational remote transmitter.
- Within 30 seconds, press a button on the inoperative remote transmitter.
- Check the inoperative remote transmitter for correct operation.
- Does the inoperative remote transmitter operate now?
Yes
The system is OK. CLEAR the DTCs. TEST the system for normal operation.
No
GO to E4 .
E4 PROGRAM THE INOPERATIVE REMOTE TRANSMITTER OR ALL THE REMOTE TRANSMITTERS
- Reprogram the inoperative remote transmitter individually using a diagnostic tool or reprogram all remote transmitters using the manual key cycle method. REFER to Remote Transmitter Programming in this section.
- Does the inoperative remote transmitter operate now?
Yes
The system is OK. INFORM the customer that any remote transmitters not present will need to be reprogrammed. CLEAR the DTCs. TEST the system for normal operation.
No
To diagnose the inoperative remote transmitter, Go To Pinpoint Test C .
PINPOINT TEST C: THE DOORS DO NOT LOCK/UNLOCK USING THE REMOTE TRANSMITTER
NOTE: All remote transmitters must be present to begin diagnosis of the remote keyless entry (RKE) system.
NOTE: Aftermarket or dealer-installed systems may adversely affect the RKE system operation. These systems should be disconnected before diagnosing any RKE concerns.
Test Step Result / Action to Take
C1 CHECK FOR THE CORRECT REMOTE TRANSMITTERS
- Check that the correct remote transmitters are used with the vehicle.
- Make sure the remote transmitters are ones provided with the OEM system and not from an aftermarket system, or a dealer-installed system that may have been installed on the vehicle.
- Are all the correct remote transmitters present?
Yes
GO to C2 .
No
The system cannot be tested without the correct remote transmitters. INFORM the customer that all the correct remote transmitters need to be present to proceed with diagnosis of the system.
C2 CHECK THE OPERATION OF THE REMOTE TRANSMITTER WITH THE KEY IN THE OFF POSITION
- Key in OFF position.
- Check the operation of the remote transmitter.
- Does the system operate correctly now?
Yes
The system is operating as designed. INFORM the customer of the correct vehicle operation.
No
GO to C3 .
C3 CHECK THE POWER DOOR LOCK SYSTEM FOR CORRECT OPERATION
- Verify the door lock/unlock operation by actuating the driver door lock control switch.
- Do all the doors lock and unlock correctly?
Yes
GO to C4 .
No
To diagnose the inoperative door locks, Go To Pinpoint Test A .
C4 CHECK FOR THE COMPLETE FUNCTIONALITY OF THE REMOTE TRANSMITTER(S)
- Check all the remote transmitter buttons for correct operation.
- Does the panic button operate correctly?
Yes
REPLACE the inoperative remote transmitter. REPROGRAM all remote transmitters. REFER to Remote Transmitter Programming in this section. INFORM the customer that any remote transmitters not present will need to be reprogrammed. CLEAR the DTCs. TEST the system for normal operation.
No
GO to C5 .
C5 MAKE SURE THE REMOTE TRANSMITTER SIGNAL IS BEING RECEIVED
- Connect the diagnostic tool.
- Enter the following diagnostic mode on the diagnostic tool: Enter the vehicle security module function tests, transmitter test or program transmitter..
- Monitor the remote transmitter identification code (TIC) through the diagnostic tool menus.
- NOTE: The vehicle must be electronically unlocked prior to using any diagnostic tools (through the remote transmitter or door lock control switch).
- Verify the remote transmitter signal is being received. Using a diagnostic tool press a button on the remote transmitter while observing the diagnostic tool.
- Does the TIC show up on the diagnostic tool screen when a button is pressed?
Yes
GO to C6 .
No
GO to C7 .
C6 CHECK IF THE REMOTE TRANSMITTERS ARE PROGRAMMED
- Enter the following diagnostic mode on the diagnostic tool: Enter the vehicle security module function tests, transmitter test or program transmitter..
- Monitor the remote transmitter TIC/DATA through the diagnostic tool menus.
- Verify the remote transmitters are programmed to the vehicle.
- Does the TIC displayed under remote transmitter match any of the TICs stored in memory?
Yes
GO to C8 .
No
PROGRAM all of the remote transmitters. REFER to Remote Transmitter Programming in this section. INFORM the customer that any remote transmitters not present will need to be reprogrammed. CLEAR the DTCs. TEST the system for normal operation.
C7 CHECK THE REMOTE TRANSMITTER BATTERY
- Using a thin coin, open the remote transmitter.
- Do not clean off any grease from the battery terminals on the back surface of the circuit board.
- Verify the correct battery is used (CR2032).
- Remove the remote transmitter battery and measure the voltage.
- Is the voltage greater than 2.5 volts?
Yes
GO to C9 .
No
INSTALL a new battery (be sure the battery is seated correctly). DO NOT reprogram the remote transmitters (faulty or dead batteries do not erase TICs from memory). CLEAR the DTCs. TEST the system for normal operation.
C8 CHECK IF THE REMOTE TRANSMITTER IS OUT OF SYNCHRONIZATION WITH THE VEHICLE SECURITY MODULE
- The vehicle must be electronically unlocked prior to using any diagnostic tools (through the remote transmitter or the door lock control switch).
- Retrieve continuous DTCs through diagnostic tool.
- Is continuous DTC B2425 stored in the vehicle security module?
Yes
To diagnose the remote transmitter out of synchronization, Go To Pinpoint Test E .
No
GO to C9 .
C9 CHECK FOR NORMAL OPERATION WITH A KNOWN GOOD REMOTE TRANSMITTER
- Enter the following diagnostic mode on the diagnostic tool: Enter the vehicle security module function tests, transmitter test or program transmitter.
- Monitor the remote transmitter TIC/DATA through the diagnostic tool menus.
- Use the customer's second remote transmitter or a known good remote transmitter that is correct for the vehicle and verify the remote transmitter signal is being received by the vehicle security module.
- Does the TIC show up on the diagnostic tool when a button is pressed on the remote transmitter?
Yes
REPLACE the inoperative remote transmitter. PROGRAM all remote transmitter(s). REFER to Remote Transmitter Programming in this section. INFORM the customer that any remote transmitters not present will need to be reprogrammed. CLEAR the DTCs. TEST the system for normal operation.
No
GO to C10 .
C10 CHECK THE VEHICLE SECURITY MODULE FOR CORRECT OPERATION
- Disconnect all vehicle security module connectors.
- Check for:
- corrosion
- pushed-out pins
- Connect all vehicle security module connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
Yes
INSTALL a new vehicle security module. REFER to Section 419-10 . REPROGRAM all remote transmitters. REFER to Remote Transmitter Programming in this section. INFORM the customer that any remote transmitters not present will need to be reprogrammed. CLEAR the DTCs. REPEAT the self-test.
No
The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
