Jaguar X-Type Sedan and Estate (Wagon). Manual - part 336

1
2
3

1
2

1
2
3

Is the voltage greater than 1 volt?
Yes

REPAIR the short circuit. For additional information, refer to wiring diagrams. CLEAR the DTC. TEST the system for
normal operation.

GO to Z5

Z5: CHECK CONTINUITY OF THE APP SENSOR SIGNAL WIRE

Turn the ignition switch to the OFF position.
Disconnect the APP sensor electrical connector PA1.
Measure the resistance between APP sensor electrical connector PA1 pin 4 (R) and the ECM electrical connector EN16
pin 102 (R).

Is the resistance less than 5 ohms?
Yes

GO to Z6

REPAIR the circuit between the APP sensor electrical connector PA1 pin 4 (R) and the ECM electrical connector EN16
pin 102 (R). For additional information, refer to wiring diagrams. CLEAR the DTC. TEST the system for normal
operation.

Z6: CHECK CONTINUITY OF THE APP SENSOR POTENTIOMETER

Measure the resistance between APP sensor electrical connector PA1 pins 4 and 6.
Operate the accelerator pedal through it's full range while observing the resistance reading.

Does the resistance vary as the pedal is operated?
Yes

INSTALL a new ECM.
REFER to:

Engine Control Module (ECM)

(303-14A Electronic Engine Controls - 2.0L NA V6 - AJV6/2.5L NA V6 -

AJV6/3.0L NA V6 - AJ27, Removal and Installation).
Before replacing an ECM, contact dealer technical support.

INSTALL a new accelerator pedal position sensor,
REFER to:

Accelerator Pedal

(310-02 Acceleration Control, Removal and Installation).

CLEAR the DTC. TEST the system for normal operation.

PINPOINT TEST AA : P2122, P2123. APP SENSOR ( TRACK 3)

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

AA1: CHECK THE POWER SUPPLY CIRCUIT TO THE APP SENSOR. TRACK 3

Turn the ignition switch to the ON position.
Measure the voltage between APP sensor electrical connector PA1 pin 1 (Y) and GROUND.

Is the voltage greater than 4 volts?
Yes

GO to AA2

REPAIR the circuit between the APP sensor electrical connector PA1 pin 1 (Y) and the sensor 5 volt supply. CLEAR the
DTC. TEST the system for normal operation.

(This circuit includes the ECM, EMS control relay, and pow er distribution fuse box. For additional information, refer to w iring diagrams. This supply is also
linked to other sensors. The fault could be in any of these or their w iring.)

AA2: CHECK THE GROUND CIRCUIT TO THE APP SENSOR

Turn the ignition switch to the OFF position.
Disconnect the APP sensor electrical connector PA1.
Measure the resistance between APP sensor electrical connector PA1 pin 3 (BG) and GROUND.

Is the resistance less than 5 ohms?
Yes

GO to AA5

REPAIR the circuit between the APP sensor electrical connector PA1 pin 3 (BG) and GROUND. CLEAR the DTC. TEST the
system for normal operation.

(This circuit includes the ECM. For additional information, refer to w iring diagrams.)

AA3: CHECK THE GROUND CIRCUIT TO THE APP SENSOR FOR CONTINUITY

Disconnect the ECM electrical connector EN16.
Disconnect the APP sensor electrical connector PA1.
Measure the resistance between EN16 pin 19 (BG) and PA1 pin 3 (BG).

Is the resistance less than 5 ohms?
Yes

GO to AA4

REPAIR the circuit. For additional information, refer to wiring diagrams. CLEAR the DTC. TEST the system for normal
operation.

AA4: CHECK THE GROUND CIRCUIT TO THE APP SENSOR FOR SHORT TO BATTERY

Connect the ECM electrical connector EN16.
Turn the ignition switch to the ON position.
Check for a voltage at PA1 pin 3 (BG).

Is the voltage greater than 1 volt?
Yes

REPAIR the short circuit. For additional information, refer to wiring diagrams. CLEAR the DTC. TEST the system for
normal operation.

GO to AA5

AA5: CHECK CONTINUITY OF THE APP SENSOR SIGNAL WIRE

Measure the resistance between APP sensor electrical connector PA1 pin 1 (Y) and the ECM electrical connector EN16
pin 103 (Y).

Is the resistance less than 5 ohms?
Yes

GO to AA6

REPAIR the circuit between the APP sensor electrical connector PA1 pin 1 (Y) and the ECM electrical connector EN16
pin 103 (Y). For additional information, refer to wiring diagrams. CLEAR the DTC. TEST the system for normal
operation.

1
2

1
2
3
4
5

1
2

AA6: CHECK CONTINUITY OF THE APP SENSOR POTENTIOMETER

Measure the resistance between APP sensor electrical connector PA1 pins 1 and 3.
Operate the accelerator pedal through it's full range while observing the resistance reading.

Does the resistance vary as the pedal is operated?
Yes

INSTALL a new ECM.
REFER to:

Engine Control Module (ECM)

(303-14A Electronic Engine Controls - 2.0L NA V6 - AJV6/2.5L NA V6 -

AJV6/3.0L NA V6 - AJ27, Removal and Installation).
Before replacing a ECM, contact Dealer technical support.

INSTALL a new accelerator pedal position sensor,
REFER to:

Accelerator Pedal

(310-02 Acceleration Control, Removal and Installation).

CLEAR the DTC. TEST the system for normal operation.

PINPOINT TEST AB : P0512, P1245. IGNITION SWITCH CRANK SIGNAL

WARNING: Make sure the starter motor does not engage in the course of these tests. Failure to follow these instructions may result

in personal injury.

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

AB1: CHECK THE START INPUT TO THE ECM

Move the gear selector to the N position.
Disconnect the ECM electrical connector EN16.
Remove the starter relay from the power distribution fuse box.
Turn the ignition switch to the CRANK position.
Measure the voltage between EN16 pin 6 (Y) and GROUND.

Is the voltage greater than 10 volts?
Yes

GO to AB2

REPAIR the circuit between the ECM and the battery. For additional information, refer to wiring diagrams. CLEAR the
DTC. TEST the system for normal operation.

(This circuit includes the ignition sw itch and the pow er distribution fuse box. [Fuse 28].)

AB2: CHECK THE START INPUT TO THE STARTER RELAY

Turn the ignition switch to the START position and hold.
Measure the voltage between the starter relay base (R10) pin 1 and GROUND.

Is the voltage greater than 10 volts?
Yes

GO to AB3

REPAIR the circuit between the starter relay base and the battery. For additional information, refer to wiring
diagrams. CLEAR the DTC. TEST the system for normal operation.

(This circuit includes the ignition sw itch and the pow er distribution fuse box.)

AB3: CHECK THE START INPUT WIRE FOR SHORT TO BATTERY AT ECM

Turn the ignition switch to the ON position.
Measure the voltage between EN16 pin 6 (Y) and GROUND.

Is the voltage greater than 10 volts?
Yes

REPAIR the short circuit. For additional information, refer to wiring diagrams. CLEAR the DTC. TEST the system for
normal operation.

GO to AB4

AB4: CHECK THE START INPUT WIRE FOR SHORT TO BATTERY AT RELAY

Turn the ignition switch to the ON position.
Measure the voltage between the starter relay base pin 1 and GROUND.

Is the voltage greater than 10 volts?
Yes

REPAIR the short circuit. For additional information, refer to wiring diagrams. CLEAR the DTC. TEST the system for
normal operation.

GO to AB5

AB5: CHECK THE STARTER RELAY INPUT FROM THE ECM FOR CONTINUITY

Measure the resistance between EN16 pin 41 (GO) and relay base pin 2.

Is the resistance less than 5 ohms?
Yes

GO to AB6

REPAIR the open circuit. For additional information, refer to wiring diagrams. CLEAR the DTC. TEST the system for
normal operation.

AB6: CHECK THE STARTER RELAY INPUT FROM THE ECM FOR SHORT TO GROUND

Disconnect ignition switch electrical connector IP18.
Measure the resistance between EN16 pin 41 (GO) and GROUND.

Is the resistance less than 10,000 ohms?
Yes

REPAIR the short circuit. For additional information, refer to wiring diagrams. CLEAR the DTC. TEST the system for
normal operation.

GO to AB7

AB7: CHECK THE STARTER RELAY INPUT FROM THE ECM FOR SHORT TO BATTERY

Measure the voltage between the starter relay base pin 2 and GROUND.

Is the voltage greater than 1 volt?
Yes

REPAIR the short circuit. For additional information, refer to wiring diagrams. CLEAR the DTC. TEST the system for
normal operation.

INSTALL a new starter relay. For additional information, refer to wiring diagrams. CLEAR the DTC. TEST the system

1
2
3

for normal operation. If the DTC is repeated, INSTALL a new ECM.
REFER to:

Engine Control Module (ECM)

(303-14B Electronic Engine Controls - 2.0L Duratorq-TDCi/2.2L Duratorq-TDCi

(110kW /150PS) - Puma, Removal and Installation).
Before replacing an ECM, contact dealer technical support.

PINPOINT TEST AC : P0561, P0562, P0563. SENSOR POWER SUPPLY

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

AC1: CHECK THE POWER SUPPLY CIRCUIT TO THE IP SENSOR

Disconnect the IP sensor electrical connector, IJ7.
Turn the ignition switch to the ON position.
Measure the voltage between IP sensor electrical connector IJ7 pin 1 (YG) and GROUND.

Is the voltage greater than 4 volts?
Yes

GO to AC2

REPAIR the circuit between the IP sensor electrical connector IJ7 pin 1 (YG) and the sensor 5 volt supply bus.
CLEAR the DTC. TEST the system for normal operation.

(The fault could be in any of the other sensors in this circuit, or in any of the spurs in this circuit. For additional information, refer to w iring diagrams.)

AC2: CHECK THE POWER SUPPLY CIRCUIT TO THE IP SENSOR FOR SHORT TO BATTERY

Measure the voltage between IP sensor electrical connector IJ7 pin 1 (YG) and GROUND.

Is the voltage greater than 6 volts?
Yes

REPAIR the circuit between the IP sensor electrical connector IJ7 pin 1 (YG) and the sensor 5 volt supply bus.
CLEAR the DTC. TEST the system for normal operation.

(The short could be in any of the other sensors in this circuit, or in any of the spurs in this circuit. For additional information, refer to w iring
diagrams.)

GO to AC3

AC3: CHECK THE POWER SUPPLY CIRCUIT TO THE MAP SENSOR

Disconnect the MAP sensor electrical connector EN8.
Turn the ignition switch to the ON position.
Measure the voltage between MAP sensor electrical connector EN8 pin 2 (OY) and GROUND.

Is the voltage greater than 4 volts?
Yes

GO to AC4

REPAIR the circuit between the MAP sensor electrical connector EN8 pin 2 (OY) and the sensor 5 volt supply bus.
CLEAR the DTC. TEST the system for normal operation.

(The fault could be in any of the other sensors in this circuit, or in any of the spurs in this circuit. For additional information, refer to w iring diagrams.)

AC4: CHECK THE POWER SUPPLY CIRCUIT TO THE MAP SENSOR FOR SHORT TO BATTERY

Measure the voltage between MAP sensor electrical connector EN8 pin 2 (OY) and GROUND.

Is the voltage greater than 6 volts?
Yes

REPAIR the circuit between the MAP sensor electrical connector EN8 pin 2 (OY) and the sensor 5 volt supply bus.
CLEAR the DTC. TEST the system for normal operation.

(The short could be in any of the other sensors in this circuit, or in any of the spurs in this circuit. For additional information, refer to w iring
diagrams.)

GO to AC5

AC5: CHECK THE POWER SUPPLY CIRCUIT TO THE FTP SENSOR

• NOTE: Access to the FTP sensor involves the removal of the fuel tank. To reduce the amount of work necessary, a slave harness could be
used. This can be connected at the access port beneath the rear seat. Tests can then be carried out via the slave harness and sensor. If
system operation is normal with the slave harness and sensor, the fault lies in the vehicle's harness or sensor.

Disconnect the FTP sensor electrical connector FT1. (See note above).
Turn the ignition switch to the ON position.
Measure the voltage between FTP sensor electrical connector FT1 pin 1 (OY) and GROUND.

Is the voltage greater than 4 volts?
Yes

GO to AC6

REPAIR the circuit between the FTP sensor electrical connector FT1 pin 1 (OY) and the sensor 5 volt supply bus.
CLEAR the DTC. TEST the system for normal operation.

(The fault could be in any of the other sensors in this circuit, or in any of the spurs in this circuit. For additional information, refer to w iring diagrams.)

AC6: CHECK THE POWER SUPPLY CIRCUIT TO THE FTP SENSOR FOR SHORT TO BATTERY

Measure the voltage between FTP sensor electrical connector FT1 pin 1 (OY) and GROUND.

Is the voltage greater than 6 volts?
Yes

REPAIR the circuit between the FTP sensor electrical connector FT1 pin 1 (OY) and the sensor 5 volt supply bus.
CLEAR the DTC. TEST the system for normal operation.

(The short could be in any of the other sensors in this circuit, or in any of the spurs in this circuit. For additional information, refer to w iring
diagrams.)

GO to AC7

AC7: CHECK THE POWER SUPPLY CIRCUIT TO THE APP SENSOR

Disconnect the APP sensor electrical connector.
Turn the ignition switch to the ON position.
Measure the voltage between APP sensor electrical connector PA1 pin 5 (OY) and GROUND.

Is the voltage greater than 4 volts?
Yes

GO to AC8

REPAIR the circuit between the APP sensor electrical connector PA1 pin 5 (OY) and the sensor 5 volt supply bus.
CLEAR the DTC. TEST the system for normal operation.

(The fault could be in any of the other sensors in this circuit, or in any of the spurs in this circuit. For additional information, refer to w iring diagrams.)

AC8: CHECK THE POWER SUPPLY CIRCUIT TO THE APP SENSOR FOR SHORT TO BATTERY

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2

1
2
3

1
2
3
4

Measure the voltage between APP sensor electrical connector PA1 pin 5 (OY) and GROUND.

Is the voltage greater than 6 volts?
Yes

REPAIR the circuit between the APP sensor electrical connector PA1 pin 5 (OY) and the sensor 5 volt supply bus.
CLEAR the DTC. TEST the system for normal operation.

(The short could be in any of the other sensors in this circuit, or in any of the spurs in this circuit. For additional information, refer to w iring
diagrams.)

GO to AC9

AC9: CHECK THE POWER SUPPLY CIRCUIT TO THE TP SENSOR

Turn the ignition switch to the ON position.
Measure the voltage between TP sensor electrical connector EN13 pin 2 (OY) and GROUND.

Is the voltage greater than 4 volts?
Yes

GO to AC10

REPAIR the circuit between the TP sensor electrical connector EN13 pin 2 (OY) and the sensor 5 volt supply bus.
CLEAR the DTC. TEST the system for normal operation.

(The fault could be in any of the other sensors in this circuit, or in any of the spurs in this circuit. For additional information, refer to w iring diagrams.)

AC10: CHECK THE POWER SUPPLY CIRCUIT TO THE TP SENSOR FOR SHORT TO BATTERY

Measure the voltage between TP sensor electrical connector EN13 pin 2 (OY) and GROUND.

Is the voltage greater than 6 volts?
Yes

REPAIR the circuit between the TP sensor electrical connector EN13 pin 2 (OY) and the sensor 5 volt supply bus.
CLEAR the DTC. TEST the system for normal operation.

(The short could be in any of the other sensors in this circuit, or in any of the spurs in this circuit. For additional information, refer to w iring
diagrams.)

GO to AC11

AC11: CHECK THE POWER SUPPLY CIRCUIT TO THE AIR CONDITIONING PRESSURE (ACP) SENSOR

Turn the ignition switch to the ON position.
Measure the voltage between ACP sensor electrical connector JB106 pin 2 (OY) and GROUND.

Is the voltage greater than 4 volts?
Yes

GO to AC12

REPAIR the circuit between the ACP sensor electrical connector JB106 pin 2 (OY) and the sensor 5 volt supply
bus. CLEAR the DTC. TEST the system for normal operation.

(The fault could be in any of the other sensors in this circuit, or in any of the spurs in this circuit. For additional information, refer to w iring diagrams.)

AC12: CHECK THE POWER SUPPLY CIRCUIT TO THE AIR CONDITIONING PRESSURE SENSOR FOR SHORT TO BATTERY

Measure the voltage between ACP sensor electrical connector JB106 pin 2 (OY) and GROUND.

Is the voltage greater than 6 volts?
Yes

REPAIR the circuit between the ACP sensor electrical connector JB106 pin 2 (OY) and the sensor 5 volt supply
bus. CLEAR the DTC. TEST the system for normal operation.

(The short could be in any of the other sensors in this circuit, or in any of the spurs in this circuit. For additional information, refer to w iring
diagrams.)

No electrical fault in power supply circuit. Recheck DTCs using the Jaguar approved diagnostic system, or code
reader.

(This fault could also be a PSV failure w ithin the ECM.)

PINPOINT TEST AD : P0851, P0852. P/N SWITCH STARTING/DRIVING MALFUNCTIONS.

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

AD1: CHECK THE P/N INPUT TO THE ECM.

Select PARK.
Set the ignition switch to the ON position.
Measure the voltage at the ECM electrical connector EN16 pin 31 (B).

Is the voltage greater than 10 volts?
Yes

INSTALL a new ECM.
REFER to:

Engine Control Module (ECM)

(303-14A Electronic Engine Controls - 2.0L NA V6 - AJV6/2.5L NA V6 -

AJV6/3.0L NA V6 - AJ27, Removal and Installation).
Before replacing a ECM, contact Dealer technical support.

REPAIR the circuit between the ECM electrical connector EN16 pin 31 (B) and the ignition switch. For additional
information, refer to wiring diagrams. CLEAR the DTC. TEST the system for normal operation.

(On automatic transmission vehicles, this circuit includes the TR sensor, central junction fuse box, ignition relay, and inertia sw itch. On NAS manual
transmission vehicles, this circuit also includes the clutch safety sw itch.)

PINPOINT TEST AE : P0646, P0647. AIR CONDITIONING CLUTCH RELAY DRIVE

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

AE1: CHECK THE GROUND SUPPLY TO THE AIR CONDITIONING CLUTCH

WARNING: This test involves working in proximity to rotating parts. Make sure due care is exercised.

Turn the ignition switch to the ON position.
Disconnect the ECM electrical connector EN16.
Disconnect the air conditioning clutch electrical connector EN30.
Measure the resistance between EN30 pin 2 (B) and GROUND.

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