Pinpoint Test Al: P0C61

NOTE: The Secondary Inverter System Controller (S-ISC) is referred to as the SOBDMB (Secondary On-Board Diagnostic Control Module B) in the scan tool.

NOTE: Drive Motor B refers to the electric generator. Drive Motor A refers to the electric motor.

NOTE: Wiring overlays or repinning of circuits are NOT appropriate for DTC P0C61 due to risk of hardware damage.

Normal Operation and Fault Conditions

REFER to: Front Electric Drive Assembly - System Operation and Component Description .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SOBDMB P0C61:00	Drive Motor "B" Position Sensor Circuit "B" Low: No Sub Type Information	This DTC sets when a short to ground detected in the generator resolver circuit.

Possible Sources

Wiring, terminals or connectors
Front electric drive assembly
Secondary Inverter System Controller (S-ISC) calibration

AL1 CHECK THE SECONDARY INVERTER SYSTEM CONTROLLER (S-ISC) CALIBRATION LEVEL

NOTE: Wiring overlays or repinning of circuits are NOT appropriate for DTC P0C61 due to risk of hardware damage.
- Verify the Secondary Inverter System Controller (S-ISC) is at the latest calibration level.
Is the Secondary Inverter System Controller (S-ISC) at the latest calibration level?

Yes GO to AL2

No UPDATE the Secondary Inverter System Controller (S-ISC) to the latest calibration level.

AL2 CHECK FOR CMDTC (CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODE) P0C61

Ignition ON.

Using a diagnostic scan tool, retrieve all Secondary Inverter System Controller (S-ISC) CMDTCs.

Was CMDTC P0C61 read from the Secondary Inverter System Controller (S-ISC)?

Yes

GO to AL3

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

AL3 VISUAL INSPECTION OF THE LOW VOLTAGE SYSTEM
- Ignition OFF.
- De-energize the high voltage system. REFER to: High Voltage System De-energizing .
- Disconnect Secondary Inverter System Controller (S-ISC) C1458A.
- Visually inspect all the low voltage cables.
- Make sure all the low voltage connectors are correctly and securely connected.
- Examine all the low voltage cables and connectors for damaged, burned or overheated insulation and loose or broken conditions.
Is a concern present?

Yes REPAIR as necessary. CLEAR the Secondary Inverter System Controller (S-ISC) DTCs and REPEAT the self-test.

No GO to AL4

AL4 CHECK THE GS2 CIRCUIT FOR A SHORT TO GROUND

Disconnect Front electric drive assembly C1280.

Measure and record:

Positive Lead	Measurement / Action	Negative Lead
C1280-4	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance above 10K ohms?

Yes

GO to AL5

No	REPLACE the harness. CLEAR the Secondary Inverter System Controller (S-ISC) DTCs. REPEAT the self-test.

AL5 CHECK FOR CORRECT SECONDARY INVERTER SYSTEM CONTROLLER (S-ISC) OPERATION

Ignition OFF.

Disconnect and inspect all Secondary Inverter System Controller (S-ISC) 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 the Secondary Inverter System Controller (S-ISC) connectors. Make sure they seat and latch correctly.

Connect Front electric drive assembly C1280.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, GO to Pinpoint Test V
(In step V4 continue through to step V5 regardless of DTC presence.)

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.