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Ford Falcon. Manual - part 211

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Powertrain Control Management

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DESCRIPTION AND OPERATION (Continued)

The automatic transmission gear shift strategy is

Connections

described in Section 307-01, Automatic Transmission.

PCM Pin A39......................................VPS Solenoid

Connections

Circuit

PCM Pin A18.......................................SS4 Solenoid

Circuit

DTCs applicable to the VPS solenoid are shown in the

following table.

DTCs applicable to the SS4 solenoid are shown in the DTC

Test Mode

Condition

following table.

P1746

KOEO, KOER

Solenoid 5 (SS5) <VPS>

Cont

open circuit fault

DTC

Test Mode

Condition

P1747

KOEO, KOER

Solenoid 5 (SS5) <VPS>

P0768

KOEO, KOER

Shift Solenoid 4 (SS4)

Cont

short circuit fault

Cont

<MCS1> electrical

problem

P1748

KOEO, KOER

Solenoid 5 (SS5) <VPS>

Cont

circuit fault

Testing

Solenoid Test

1. Disconnect the harness from the transmission

connector.

1. Disconnect the harness from the transmission

connector.

2. Measure the resistance across the connector

terminals using a suitable multimeter. Replace the 2. Measure the resistance across the connector

solenoid if not within specification.

terminals using a suitable multimeter. Replace the

solenoid if not within specification.

SS4 Solenoid Resistance Specification

23 -45

Ω

SS5 Solenoid Resistance Specification

3.8-6.2

Ω

3. Check the harness for open circuits and short

circuits.

3. Check the harness for open circuits and short

circuits.

Variable Pressure Solenoid 5

Power Control Solenoid 6

Variable Pressure Solenoid 5 (VPS) is used on

vehicles fitted with automatic transmission to control

Power Control Solenoid 6 (PCS) is used on vehicles

the pressure to the clutches and bands for automatic

fitted with automatic transmission to control line

gear shift.

pressure in the automatic transmission.

The solenoid is wired to 12V within the transmission.

The PCM applies a PWM current to energise the coils The PCM applies 0 Volts to energise the coils of SS1

of VPS as required for gearshift operation.

as required for gearshift operation.

The automatic transmission gearshift strategy is

described in Section 307-01, Automatic Transmission. described in Section 307-01, Automatic Transmission.

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Powertrain Control Management

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DESCRIPTION AND OPERATION (Continued)

Connections

PCM Pin A2.........................................PCS Solenoid

PCM Pin A43......................................LUS Solenoid

Circuit

Maintenance

Diagnosis

Maintenance, removal and installation of PCS is

Diagnostic Trouble Codes (DTC) are retrieved through

described in Section 307-01, Automatic Transmission. the diagnostic connector using the WDS tester. Fault

Finding Tables for DTCs are in the ‘Diagnosis’

DTCs applicable to the PCS solenoid are shown in

section.

the following table.

DTC

Test Mode

Condition

DTC

Test Mode

Condition

P0743

KOEO, KOER

Lock Up Solenoid 7

P0773

KOEO, KOER

Shift Solenoid 6 (SS6)

Cont

(LUS) fault

Cont

<PCS> electrical problem

Testing

Solenoid Test

1. Disconnect the harness from the transmission

connector.

2. Measure the resistance across the connector

terminals using a suitable multimeter. Replace the

solenoid if not within specification.

LUS Solenoid Resistance Specification

PCS Solenoid Resistance Specification

23 -45

Ω

23 -45

Ω

3. Check the harness for open circuits and short

circuits.

LPG Fuel System Outputs

Lock up Solenoid 7

Lock Up Solenoid 7 (LUS) is used on vehicles fitted

LPG Prime Solenoid PRIME

with automatic transmission to control the automatic

The LPG prime solenoid primes the LPG hoses and

transmission torque converter lock-up clutch.

the intake manifold with gas the facilitate engine

The Powertrain Control Module (PCM) applies 12

starting.

Volts to energise the coils of LUS as required.
The automatic transmission gear shift strategy is

described in Section 307-01, Automatic Transmission.

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Powertrain Control Management

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DESCRIPTION AND OPERATION (Continued)

Connections

PCM Pin C21............................

…….. PRIME

PCM Pin C7..............................Gas Cut-Out (GCO)

Circuit

Diagnosis

Diagnostic Trouble Codes (DTC) are retrieved through Diagnostic Trouble Codes (DTC) are retrieved through

the diagnostic connector using the WDS tester. Fault

Finding Tables for DTCs are in the ‘Diagnosis’

section.

DTCs applicable to the GCO relay are shown in the

following table.

DTC

Test Mode

Condition

DTC

Test Mode

Condition

P1213

KOEO, Cont.

PRIME circuit malfunction

P1182

KOEO, Cont.

relay circuit malfunction

Testing

Failure Mode

Should the GCO relay fail for any reason, LPG mode

Solenoid Test

will not be available.

1. Remove the connector to the PRIME solenoid on

Testing

the LPG converter.

2. Measure the resistance across the PRIME

Relay Test

solenoid using a suitable multimeter.

1. Remove the GCO Relay.

Prime Solenoid Resistance Specification

2. Measure the resistance across the GCO relay coil

10-14

Ω

terminals using a suitable multimeter.

3. Check the harness for open circuits and short

GCO Relay Coil Resistance Specification

circuits.

60-120

Ω

Gas Cut-out Solenoid GCO

3. Check the harness for open circuits and short

circuits.

In vehicles fitted with Ford factory SF LPG systems,

three solenoids control LPG flow from the tank to the

LPG Stepper Motor A-D

converter unit. The three solenoids are controlled by

the Gas Cut-Out (GCO) relay. The GCO relay is

LPG Stepper Motor A -D (GSCA-D) signals are used

energised by the PCM, energising the solenoid control by the Powertrain Control Module (PCM) to control

relay, which then energises to activate the Tank

the air-fuel ratio when running in LPG mode. The LPG

Lock-off, Engine Bay Lock-off and Idle Circuit

Stepper Motor moves in discrete steps from 0 (fully

solenoids on the LPG fuel line. These solenoids are

open) to 216 (fully closed).

open when.

Connections

PCM Pin C24.............LPG Stepper Motor A (GSCA)
PCM Pin C25.............LPG Stepper Motor B (GSCB)
PCM Pin C26

….........LPG Stepper Motor C (GSCC)

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Powertrain Control Management

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DESCRIPTION AND OPERATION (Continued)

PCM Pin C27............LPG Stepper Motor D (GSCD)

DTCs applicable to GSMA-D are shown in the

following table.

Circuit

DTC

Test Mode

Condition

P1159

LPG

fault

Testing

GSMA-D are tested whenever an LPG test is

performed.
1. Connect a WDS tester to the diagnostic

connector.

2. Check the Parameter Identification (PID) value of

the GSM. If the PID value is within specification,

then check for other Diagnostic Trouble Codes

(DTC) or component faults.

PID Specification

PID

Description

Units

LPG Stepper Motor Location

LPG SMP

LPG Stepper Motor

100 - 160

Position

Steps

Control Area Network (CAN)

CAN is a bi-directional bus used in the vehicle for

intermodule communications. A DLC connector in the

fuse panel allows a WDS to be connected to the CAN

for module diagnostics.
CAN-H and CAN-L is a balanced pair of twisted wire

on the CAN network. It is terminated at the PCM on

one end and the instrument cluster on the other. In

between the PCM and the instrument cluster are other

modules that tap off or daisy chains the CAN-H and

CAN-L wires on the wiring harness. CAN-H and

CAN-L signals are complementary for EMC. A level of

Diagnosis

fault tolerance is provided should either line be

Diagnostic Trouble Codes (DTC) are retrieved through shorted to ground or 12V. The PCM and the

the diagnostic connector using the WDS tester. Fault

instrument cluster must be connected for the CAN to

Finding Tables for DTCs are in the ‘Diagnosis’

function.

section.

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