Pinpoint Test F: The Power Tailgate Step Detect Status Does Not Work
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
- Refer to POWER TAILGATE/RETRACTABLE RUNNING BOARDS
for schematic and connector information.
Normal Operation and Fault Conditions
REFER to: Power Tailgate - System Operation and Component Description .
DTC Fault Trigger Conditions
DTC Description Fault Trigger Condition RGTM B15E7:29 Tailgate Step Detect Fault Indicator: Signal Invalid Sets when the RGTM detects the home open/close switch(es) are not in the correct state at the beginning of self-test, or no home switch transition during releasing/cinching. Possible Sources
- Tailgate step status
- RGTM
- NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
- F1 CHECK FOR RGTM (REAR GATE TRUNK MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
- Ignition ON.
- Using a diagnostic scan tool, carry out the RGTM self-test.
Is DTC B15E7:29 present?
Yes GO to F3 No DIAGNOSE any other DTCs first. REFER to DTC Chart(s) . If no other DTCs are present, GO to F2 - F2 CHECK THE TAILGATE STEP STATUS
- Using diagnostic scan tool to observe Tailgate Step Switch status while deploying and storing the step with the tailgate in the fully open position.
- Access the RGTM and monitor the TAILGATE_LCK_SW_INPPID
- Access the RGTM and monitor the TAILGATE_PWL_SWPID
Does the PID correctly indicate the step status?
Yes Check the manual operation of the tailgate and correct any manual binding issues as necessary. No GO to F3 - Using diagnostic scan tool to observe Tailgate Step Switch status while deploying and storing the step with the tailgate in the fully open position.
- F3 CHECK FOR SHORT TO VOLTAGE ON TAILGATE STEP STATUS SENSOR CIRCUIT
- Ignition OFF.
- Disconnect RGTM C4623.
- Disconnect Tailgate step status sensor C4624.
- Ignition ON.
- Measure:
Positive Lead Measurement / Action Negative Lead C4624-2 Ground
Is any voltage present?
Yes REPAIR the circuit. No GO to F4 - F4 CHECK FOR A SHORT TO GROUND ON THE TAILGATE STEP STATUS CIRCUIT
- Ignition OFF.
- Measure:
Positive Lead Measurement / Action Negative Lead C4624-2 Ground
Is the resistance greater than 10, 000 ohms?
Yes GO to F5 No REPAIR the circuit. - F5 CHECK FOR AN OPEN IN THE TAILGATE STEP STATUS CIRCUITS
Are the resistances less than 3 ohms?
Yes GO to F6 No REPAIR the circuit in question. - F6 CHECK FOR CORRECT RGTM (REAR GATE TRUNK MODULE) OPERATION
- Disconnect and inspect all RGTM 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 all the RGTM 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 TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, INSTALL a new a new tailgate step status sensor. REFER to: Tailgate Step . 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.