Ford Falcon. Manual — part 211
303-14-58
Powertrain Control Management
303-14-58
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
Testing
Solenoid Test
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 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
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
Connections
PCM Pin A2. . . . . . . . . . .PCS Solenoid
PCM Pin A43. . . . . . . . . ..LUS Solenoid
Circuit
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
Testing
Solenoid Test
Solenoid Test
1. Disconnect the harness from the transmission
1. Disconnect the harness from the transmission
connector.
connector.
2. Measure the resistance across the connector
2. Measure the resistance across the connector
terminals using a suitable multimeter. Replace the
terminals using a suitable multimeter. Replace the
solenoid if not within specification.
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
3. Check the harness for open circuits and short
circuits.
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
303-14-60
DESCRIPTION AND OPERATION (Continued)
Connections
Connections
PCM Pin C21. . . . . . .
. .. PRIME
PCM Pin C7. . . . . . . ..Gas Cut-Out (GCO)
Circuit
Circuit
Diagnosis
Diagnosis
Diagnostic Trouble Codes (DTC) are retrieved through Diagnostic Trouble Codes (DTC) are retrieved through
the diagnostic connector using the WDS tester. Fault
the diagnostic connector using the WDS tester. Fault
Finding Tables for DTCs are in the ‘Diagnosis’
Finding Tables for DTCs are in the ‘Diagnosis’
section.
section.
DTCs applicable to the GCO relay are shown in the
DTCs applicable to the GCO relay are shown in the
following table.
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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