Pinpoint Test J: B117C

WARNING: This page is about a different car, the 2013 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.

J1 RETRIEVE THE DTCs FROM THE LTM
- Using a scan tool, perform the LTM self-test.
  Is DTC B117C the only DTC present?
  
  Yes : GO to J2.
  
  No : DIAGNOSE all other LTM DTCs first. Refer to the LTM DTC CHART .

J2 CHECK THE SECTOR GEAR SWITCH INPUT CIRCUITS FOR VOLTAGE

Disconnect: Power Liftgate Latch.
Ignition ON.

Measure:

Positive Lead	Measurement/Action	Negative Lead
C4339-6		Ground
C4339-4		Ground

Are the voltages greater than 11 volts?

Yes : INSTALL a new power liftgate latch. REFER to LIFTGATE LATCH -- POWER . CLEAR the DTCs . REPEAT the LTM self-test.

If DTC B117C returns, GO to J5.

No : GO to J3.

J3 CHECK THE SECTOR GEAR SWITCH INPUT CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.
Disconnect: LTM C4174B.

Measure:

Positive Lead	Measurement/Action	Negative Lead
C4174B-13		Ground
C4174B-2		Ground

Are the resistances greater than 10, 000 ohms?

Yes : GO to J4.

No : REPAIR the circuit in question.

J4 CHECK THE SECTOR GEAR SWITCH INPUT CIRCUITS FOR AN OPEN

Measure:

Positive Lead	Measurement/Action	Negative Lead
C4174B-13		C4339-6
C4174B-2		C4339-4

Are the resistances less than 3 ohms?

Yes : INSTALL a new power liftgate latch. REFER to LIFTGATE LATCH -- POWER . CLEAR the DTCs .

REPEAT the LTM self-test.

IF DTC B117C returns, GO to J5.

No : REPAIR the circuit in question.

J5 CHECK FOR CORRECT LTM OPERATION
- Ignition OFF.
- Disconnect and inspect all LTM connectors.
- Repair:
  - corrosion (install new connector or terminals - clean module pins)
  - damaged or bent pins - install new terminals/pins
  - pushed-out pins - install new pins as necessary
- Reconnect all the LTM connectors. 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 LTM . Refer to LIFTGATE/TRUNK MODULE (LTM) .
  
  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.