Pinpoint Test E : Drive Modes Cannot Be Changed Using The Drive Mode Switch

E1 CHECK THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE DIAGNOSTIC TROUBLE CODES (DTCS)

Ignition ON.

Using a diagnostic scan tool retrieve and record all ABS module Diagnostic Trouble Codes (DTCs).

Is DTC P05D0:24 present?

Yes

GO to E2

No	If no Diagnostic Trouble Codes (DTCs) are present, GO to E3 For all other ABS module Diagnostic Trouble Codes (DTCs), GO to the DTC Chart: Anti-Lock Brake System (ABS) Module.

E2 CHECK THE DRIVE MODE INPUT CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Disconnect instrument panel console switch assembly C3258 .

Disconnect GFM2 C3719 .

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3258-7	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes	INSTALL a new drive mode switch.

No	REPAIR the circuit.

E3 CHECK THE GFM2 (GENERIC FUNCTION MODULE 2) DRIVE MODE SWITCH INPUT

Ignition OFF.

Disconnect instrument panel console switch assembly C3258 .

Ignition ON.

Observe the message center while momentarily connecting a fused jumper wire as indicated:

Positive Lead	Measurement / Action	Negative Lead
C3258-7	Courtesy of FORD MOTOR COMPANY	Ground

Does the message center indicate a drive mode change when the jumper wire is connected to ground?

Yes

GO to E4

GO to E5

E4 CHECK THE DRIVE MODE SWITCH GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3258-12	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance less than 3 ohms?

Yes	INSTALL a new drive mode switch.

No	REPAIR the circuit.

E5 CHECK THE DRIVE MODE SWITCH INPUT CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect GFM2 C3719 .

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3258-7	Courtesy of FORD MOTOR COMPANY	C3719-14

Is the resistance less than 3 ohms?

Yes

GO to E6

No	REPAIR the circuit.

E6 VERIFY ALL WIRING CONNECTIONS
- Ignition OFF.
- Disconnect GFM2 C3719 (if not previously disconnected).
- Disconnect instrument panel console switch assembly C3258 (if not previously disconnected).
- Disconnect all in-line connectors between the GFM2 and the instrument panel console switch assembly.
- Using a good light source, inspect all disconnected electrical connectors for the following:
  - corrosion - install new connector or terminal and clean the module pins
  - damaged or bent pins - install new terminals or pins
  - damaged or bent pins - install new terminals or pins
  - spread terminals - install new terminals as necessary
Are the connectors free of corrosion, damaged pins, bent pins, pushed-out pins and spread terminals?

Yes GO to E7

No REPAIR the connector or terminals. REFER to Connector Repair Procedures for schematic and connector information.

E7 CHECK FOR CORRECT GFM2 (GENERIC FUNCTION MODULE 2) OPERATION

Connect GFM2 C3719 . Make sure it seats and latches correctly.

Connect instrument panel console switch assembly C3258 . Make sure it seats and latches correctly.

Connect all in-line connectors between the GFM2 and the instrument panel console switch assembly. 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 the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new GFM2. REFER to: Generic Function Module 2 (GFM2) .

No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.