Pinpoint Test Z : B19A5

NOTE: When taking measurements at DCSM harness connectors, do not insert the electrical probes into the female connector pins. Inserting the probes into connector pins can cause intermittent or open electrical connections after reassembly resulting in DTCs and system failure. Touching the tip of these connector pins is recommended instead.

Z1 CHECK THE PASSENGER CUSHION TED BLOWER SPEED CONTROL CIRCUIT FOR A SHORT TO GROUND

WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment.

Ignition OFF.

Disconnect: Passenger Seat Side Air Bag C339 .

Disconnect: DCSM C3265C .

Disconnect: Passenger Cushion TED C3040 .

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3265C-3	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes	GO to Z2.
No	REPAIR the circuit. GO to Z5.

Z2 CHECK THE PASSENGER CUSHION TED BLOWER SPEED CONTROL CIRCUIT AND BLOWER GROUND CIRCUIT FOR A SHORT TOGETHER

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3265C-3	Courtesy of FORD MOTOR COMPANY	C3265C-7

Is the resistance greater than 10, 000 ohms?

Yes	GO to Z3.
No	REPAIR the circuits. GO to Z5.

Z3 DETERMINE CUSHION TED OR DCSM FAILURE

Remove the cushion TED from the passenger seat. Refer to Seat Cushion Thermo-Electric Device (TED) .

Remove the cushion TED from the driver seat and install it on the passenger seat.

Connect: Passenger Cushion TED C3040 .

Connect: DCSM C3265C .

Start the engine and check operation of the passenger seat climate controlled seat system.

Does the seat operate with the TED from the other seat installed?

Yes	INSTALL a new seat cushion TED. Refer to Seat Cushion Thermo-Electric Device (TED) . GO to Z5.
No	GO to Z4.

Z4 CHECK FOR CORRECT DCSM OPERATION

Ignition OFF.

Disconnect and inspect all DCSM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the DCSM connectors. Make sure they seat and latch correctly.

Connect: Passenger Cushion TED C3040 (if previously disconnected).

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 DCSM. Refer to Dual Climate Controlled Seat Module (DCSM) . GO to Z5.
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. GO to Z5.

Z5 CHECK FOR SRS DTCs

Ignition OFF.

Connect: Passenger Seat Side Air Bag C339 .

Connect: DCSM C3265C (if previously disconnected).

Connect: Passenger Cushion TED C3040 (if previously disconnected).

Ignition ON.

Using a diagnostic scan tool, clear the RCM DTCs.

Cycle the ignition OFF then ON.

Using a diagnostic scan tool, perform RCM self-test.

Are any RCM DTCs retrieved during self-test?

Yes	REFER to Supplemental Restraint System for pinpoint test direction.
No	The repair is complete. RETURN the vehicle to the customer.