Pinpoint Test S : The Keyless Entry Keypad Illumination Is Inoperative
- S1 CHECK THE KEYLESS ENTRY KEYPAD OPERATION
- Press the 7/8 and 9/0 buttons simultaneously on the keyless entry keypad.
Do the doors lock using the keyless entry keypad?
Yes GO to S2 No GO to Pinpoint Test R - S2 CARRY OUT THE BCM (BODY CONTROL MODULE) SELF-TEST
- Ignition ON.
- Using a diagnostic scan tool, carry out the BCM self-test.
Is DTC B121A:11 present?
Yes GO to S3 No GO to S5 - S3 CHECK THE KEYLESS ENTRY KEYPAD FOR A SHORT TO GROUND
- Ignition OFF.
- Disconnect Keyless Entry Keypad C597 .
- Ignition ON.
- Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the BCM self-test.
Is DTC B121A:11 still present?
Yes GO to S4 No INSTALL a new front door moulding. REFER to: Front Door Upper Moulding . - S4 CHECK THE KEYPAD ILLUMINATION OUTPUT CIRCUIT FOR A SHORT TO GROUND
- Ignition OFF.
- Disconnect BCM C2280D .
- Measure:
Positive Lead Measurement / Action Negative Lead C597-2 Ground
Is the resistance greater than 10, 000 ohms?
Yes GO to S7 No REPAIR the circuit. - S5 CHECK THE BCM (BODY CONTROL MODULE) OUTPUT
- Ignition OFF.
- Disconnect Keyless Entry Keypad C597 .
- Ignition ON.
- Using a diagnostic scan tool, command the BCM KEY_PAD_LMP PID on.
- Measure:
Positive Lead Measurement / Action Negative Lead C597-2 Ground
Is the voltage greater than 11 volts?
Yes INSTALL a new front door moulding. REFER to: Front Door Upper Moulding . No GO to S6 - S6 CHECK THE BCM (BODY CONTROL MODULE) KEYPAD ILLUMINATION OUTPUT CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect BCM C2280D .
Is the resistance less than 3 ohms?
Yes GO to S7 No REPAIR the circuit. - S7 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
- Disconnect and inspect all the BCM connectors.
- Repair:
- corrosion (install new connectors or terminals - clean module pins)
- damaged or bent pins - install new terminals pins
- pushed-out pins - install new pins as necessary
- Reconnect the BCM connectors and make sure they seat and latch correctly.
- Operate the system and determine if the concern is still present.
Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, Refer to: BCM Hardware Testing -- Fusion Hybrid/Energi No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.