Jaguar X-Type Sedan and Estate (Wagon). Manual - part 333

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INSTALL a new RH bank catalyst monitor sensor. For additional information,
REFER to:

Catalyst Monitor Sensor RH

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

AJV6/3.0L NA V6 - AJ27, Removal and Installation).
CLEAR the DTCs. TEST the system for normal operation. If the DTC is repeated, INSTALL a new ECM. For additional
information,
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.

J6: CHECK THE RIGHT-HAND BANK CATALYST MONITOR SENSOR POWER SUPPLY CIRCUIT

Measure the voltage between the catalyst monitor sensor electrical connector EN14 pin 2 (W G) and GROUND.

Is the voltage less than 10 volts?
Yes

GO to J8

GO to J7

J7: CHECK CONTINUITY OF THE RIGHT-HAND BANK CATALYST MONITOR SENSOR HEATER GROUND CIRCUIT

Turn the ignition switch to the OFF position.
Disconnect the ECM electrical connector EN16.
Measure the resistance between the catalyst monitor sensor electrical connector EN14, pin 1 (U) and the ECM
electrical connector EN16, pin 92 (U).

Is the resistance less than 5 ohms?
Yes

INSTALL a new ECM. For additional information,
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. For additional information, refer to the wiring diagrams. CLEAR the DTCs. TEST the system for
normal operation.

J8: CHECK FUSE 38 OF THE ENGINE COMPARTMENT FUSE BOX

Check the fuse.

Is the fuse OK?
Yes

GO to J10

GO to J9

J9: CHECK FUSE 38 OF THE ENGINE COMPARTMENT FUSE BOX FOR A SHORT TO GROUND

Measure the resistance between electrical connector JB34, pin 97 of the engine compartment fuse box and GROUND.

Is the resistance less than 10,000 ohms?
Yes

REPAIR short to ground between the engine compartment fuse box and the right-hand bank HO2S. CLEAR the DTC.
TEST the system for normal operation.

INSTALL a new fuse. Check the circuit for cause of fuse failure. CLEAR the DTC. TEST the system for normal
operation.

J10: CHECK THE POWER SUPPLY TO FUSE 38 IN THE ENGINE COMPARTMENT FUSE BOX

Measure the voltage between fuse 38 electrical connector JB34 pin 97 and GROUND.

Is the voltage less than 10 volts?
Yes

Repair the circuit from the ECM control relay to the engine compartment fuse box. CLEAR the DTC. TEST the system
for normal operation.

Repair the circuit between the engine compartment fuse box and the HO2S. For additional information, refer to wiring
diagrams. CLEAR the DTC. TEST the system for normal operation.

PINPOINT TEST K : P0151, P0152, P0153, P1647. LEFT-HAND BANK HO2S

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

K1: CHECK THE CONSTANT CIRCUIT OF THE LEFT-HAND BANK HO2S FOR OPEN CIRCUIT

Disconnect the HO2S electrical connector EN32.
Disconnect the ECM electrical connector EN16.
Measure the resistance between EN16, pin 108 (P) and EN32, pin 4 (P).

Is the resistance less than 5 ohms?
Yes

GO to K2

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

K2: CHECK THE CONSTANT CIRCUIT OF THE LEFT-HAND BANK HO2S FOR SHORT TO GROUND

Measure the resistance between EN16, pin 108 (P) and GROUND.

Is the resistance less than 10,000 ohms?
Yes

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

GO to K3

K3: CHECK THE CONSTANT CIRCUIT OF THE LEFT-HAND BANK HO2S FOR SHORT TO BATTERY

Connect the ECM electrical connector EN16.
Turn the ignition switch to the ON position.
Measure the voltage between EN32, pin 4 (P) and GROUND.

Is the voltage greater than 5 volts?
Yes

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

GO to K4

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K4: CHECK THE VARIABLE CIRCUIT OF THE LEFT-HAND BANK HO2S FOR OPEN CIRCUIT

Disconnect the HO2S electrical connector EN32.
Disconnect the ECM electrical connector EN16.
Measure the resistance between EN16, pin 107 (Y) and EN32, pin 3 (Y)

Is the resistance less than 5 ohms?
Yes

GO to K5

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

K5: CHECK THE VARIABLE CIRCUIT OF THE LEFT-HAND BANK HO2S FOR SHORT TO GROUND

Measure the resistance between EN16, pin 107 (Y) and GROUND.

Is the resistance less than 10,000 ohms?
Yes

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

GO to K6

K6: CHECK THE VARIABLE CIRCUIT OF THE LEFT-HAND BANK HO2S FOR SHORT TO BATTERY

Connect the ECM electrical connector EN16.
Turn the ignition switch to the ON position.
Measure the voltage between EN32 pin 3 (Y) and GROUND.

Is the voltage greater than 5 volts?
Yes

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

INSTALL a new left-hand HO2S.
REFER to:

Heated Oxygen Sensor (HO2S) LH

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

AJV6/3.0L NA V6 - AJ27, Removal and Installation).
CLEAR the DTCs. TEST the system for normal operation. If the DTC is repeated, 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.

PINPOINT TEST L : DTC P0057, P0058, P0157, P0158, P0159, P0160. LEFT-HAND BANK CATALYST MONITOR

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

L1: CHECK THE POWER SUPPLY CIRCUIT TO THE LEFT-HAND BANK CATALYST MONITOR HEATER

Turn the ignition switch to the OFF position.
Disconnect the catalyst monitor sensor electrical connector EN9.
Turn the ignition switch to the ON position.
Measure the voltage between the catalyst monitor sensor electrical connector EN9 pin 2 (W R) and GROUND.

Is the voltage less than 10 volts?
Yes

GO to L6

GO to L2

L2: CHECK CONTINUITY OF THE LEFT-HAND BANK CATALYST MONITOR SENSOR GROUND CIRCUIT

Is the resistance less than 5 ohms?
Yes

GO to L3

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

L3: CHECK CONTINUITY OF THE POWER SUPPLY WIRE TO THE LEFT-HAND BANK CATALYST MONITOR SENSOR

Measure the resistance between the catalyst monitor sensor electrical connector EN9 pin 4 (N) and the ECM electrical
connector EN16 pin 129 (N).

Is the resistance less than 5 ohms?
Yes

GO to L4

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

L4: CHECK THE LEFT-HAND BANK CATALYST MONITOR SENSOR POWER SUPPLY WIRE FOR A SHORT TO GROUND

Measure the resistance between the catalyst monitor sensor electrical connector EN9 pin 4 (N) and GROUND.

Is the resistance less than 10,000 ohms?
Yes

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

GO to L5

L5: CHECK THE LEFT-HAND BANK CATALYST MONITOR SENSOR POWER SUPPLY WIRE FOR A SHORT TO BATTERY

Measure the voltage between the catalyst monitor sensor electrical connector EN9 pin 4 (N) and GROUND.

Is the voltage greater than 1 volt?
Yes

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

INSTALL a new left-hand bank catalyst monitor sensor. For additional information,
REFER to:

Catalyst Monitor Sensor LH

(303-14A Electronic Engine Controls - 2.0L NA V6 - AJV6/2.5L NA V6 - AJV6/3.0L

NA V6 - AJ27, Removal and Installation).
CLEAR the DTCs. TEST the system for normal operation. If the DTC is repeated, INSTALL a new ECM. For additional
information,

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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.

L6: CHECK THE LEFT-HAND BANK CATALYST MONITOR SENSOR POWER SUPPLY CIRCUIT

Measure the voltage between the catalyst monitor sensor electrical connector EN9 pin 2 (W R) and GROUND.

Is the voltage less than 10 volts?
Yes

GO to L8

GO to L7

L7: CHECK CONTINUITY OF THE LEFT-HAND BANK CATALYST MONITOR SENSOR HEATER GROUND CIRCUIT

Turn the ignition switch to the OFF position.
Disconnect the ECM electrical connector EN16.
Measure the resistance between the catalyst monitor sensor electrical connector EN9 pin 1 (UY) and the ECM
electrical connector EN16 pin 93 (UY).

Is the resistance less than 5 ohms?
Yes

INSTALL a new ECM. For additional information,
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.

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

L8: CHECK FUSE 42 OF THE ENGINE COMPARTMENT FUSE BOX

Check the fuse.

Is the fuse OK?
Yes

GO to L10

GO to L9

L9: CHECK FUSE 42 OF THE ENGINE COMPARTMENT FUSE BOX FOR A SHORT TO GROUND

Measure the resistance between electrical connector JB34 pin 105 of the engine compartment fuse box and GROUND.

Is the resistance less than 10,000 ohms?
Yes

REPAIR short to ground between the engine compartment fuse box and the left-hand bank HO2S. For additional
information, refer to wiring diagrams. CLEAR the DTC. TEST the system for normal operation.

INSTALL a new fuse. Check the circuit for cause of fuse failure. CLEAR the DTC. TEST the system for normal
operation.

L10: CHECK THE POWER SUPPLY TO FUSE 42 IN THE ENGINE COMPARTMENT FUSE BOX

Measure the voltage between Fuse 42 electrical connector JB34 pin 105 and GROUND.

Is the voltage less than 10 volts?
Yes

Repair the circuit from the ECM control relay to the engine compartment fuse box. For additional information, refer to
wiring diagrams. CLEAR the DTC. TEST the system for normal operation.

Repair the circuit between the engine compartment fuse box and the HO2S. For additional information, refer to wiring
diagrams.

PINPOINT TEST M : DTC P0101, P0102, P0103, P1104. MASS AIR FLOW SENSOR (MAF)

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

M1: CHECK THE MAF SENSOR POWER SUPPLY

Turn the ignition switch to the OFF position.
Disconnect the MAF sensor electrical connector EN6.
Turn the ignition switch to the ON position.
Measure the voltage between the MAF sensor electrical connector EN6 pin 1 (GU) and GROUND.

Is the voltage less than 10 volts?
Yes

GO to M5

GO to M2

M2: CHECK CONTINUITY OF THE MAF SENSOR GROUND CIRCUIT

Turn the ignition switch to the OFF position.
Disconnect the ECM electrical connector EN16.
Measure the resistance between the MAF sensor electrical connector EN6 pin 3 (GW) and the ECM electrical connector
EN16 pin 44 (GW).

Is the resistance less than 5 ohms?
Yes

GO to M3

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

M3: CHECK CONTINUITY OF THE MAF SENSOR GROUND CIRCUIT

Measure the resistance between the MAF sensor electrical connector EN6 pin 2 (BW) and the ECM electrical connector
EN16 pin 45 and pin 46 (BW).

Is the resistance less than 5 ohms?
Yes

GO to M4

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

M4: CHECK THE MAF SENSOR CIRCUIT FOR SHORT TO GROUND

Measure the resistance between the MAF sensor electrical connector EN6 pin 3 (GW) and GROUND.

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Is the resistance greater than 10,000 ohms?
Yes

INSTALL a new MAF sensor. For additional information,
REFER to:

Mass Air Flow (MAF) Sensor

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

AJV6/3.0L NA V6 - AJ27, Removal and Installation).
CLEAR DTCs. TEST the system for normal operation. If the DTC is repeated, INSTALL a new ECM. For additional
information,
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.

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

M5: CHECK FUSE 36 OF THE ENGINE COMPARTMENT FUSE BOX

Check the fuse.

Is the fuse OK?
Yes

GO to M7

GO to M6

M6: CHECK FUSE 36 OF THE ENGINE COMPARTMENT FUSE BOX FOR A SHORT TO GROUND

Measure the resistance between electrical connector JB34 pin 93 of the engine compartment fuse box and GROUND.

Is the resistance less than 10,000 ohms?
Yes

REPAIR short to ground between the engine compartment fuse box and the MAF sensor. For additional information,
refer to wiring diagrams. CLEAR the DTC. TEST the system for normal operation.

INSTALL a new fuse. Check the circuit for cause of fuse failure. CLEAR the DTC. TEST the system for normal
operation.

M7: CHECK THE POWER SUPPLY FROM FUSE 36 IN THE ENGINE COMPARTMENT FUSE BOX TO THE MAF SENSOR

Measure the voltage between the engine compartment fuse box electrical connector JB34 pin 93 and GROUND.

Is the voltage less than 10 volts?
Yes

Repair the circuit from the engine compartment fuse box to the MAF sensor. For additional information, refer to wiring
diagrams. CLEAR the DTC. TEST the system for normal operation.

Recheck DTCs.

PINPOINT TEST N : P0111, P0112, P0113. IAT SENSOR

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

N1: CHECK CONTINUITY OF THE INTAKE AIR TEMPERATURE (IAT) SENSOR POWER SUPPLY CIRCUIT

Turn the ignition switch to the OFF position.
Disconnect the MAF sensor electrical connector EN6.
Disconnect the ECM electrical connector EN16.
Measure the resistance between the MAF sensor electrical connector EN6 pin 4 (O) and the ECM electrical connector
EN16, pin 71 (O).

Is the resistance less than 5 ohms?
Yes

GO to N2

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

N2: CHECK CONTINUITY OF THE IAT SENSOR CIRCUIT

Measure the resistance between the MAF sensor electrical connector EN6 pin 5 (BG) and the ECM electrical connector
EN16, pin 19 (BG).

Is the resistance less than 5 ohms?
Yes

GO to N4

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

N3: CHECK THE IAT SENSOR CIRCUIT FOR SHORT TO BATTERY

Turn the ignition switch to the OFF position.
Disconnect the MAF sensor electrical connector EN6.
Check for a voltage between EN6 pin 5 (BG) and GROUND.

Is the voltage greater than 1 volt?
Yes

GO to N1

INSTALL a new MAF sensor.
REFER to:

Mass Air Flow (MAF) Sensor

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

AJV6/3.0L NA V6 - AJ27, Removal and Installation).
CLEAR the DTC. TEST the system for normal operation.

N4: CHECK THE IAT SENSOR POWER SUPPLY CIRCUIT FOR SHORT TO GROUND

Measure the resistance between the MAF sensor electrical connector EN6 pin 4 (O) and GROUND.

Is the resistance less than 10,000 ohms?
Yes

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

GO to N5

N5: CHECK THE IAT SENSOR GROUND CIRCUIT FOR SHORT TO BATTERY

Connect the ECM electrical connector, EN16.
Turn the ignition switch to the ON position.
Check for voltage at EN6 pin 5 (BG)

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