Jaguar X-Type Sedan and Estate (Wagon). Service manual — part 558

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Is the voltage less than 10 volts?
Yes

REPAIR the circuit between JB185, pin 02 and battery. This circuit includes the front power distribution box, fuse 41.
For additional information, refer to the wiring diagrams.

No

GO to Y3

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Y3: CHECK THE SOLENOID+ SUPPLY TO THE DSC MODULE

Turn the ignition switch to the ON position.
Measure the voltage between JB185, pin 06 (R) and GROUND.

Is the voltage less than 10 volts?
Yes

REPAIR the circuit between JB185, pin 06 and battery. This circuit includes the front power distribution box, fuse 41.
For additional information, refer to the wiring diagrams.

No

GO to Y4

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Y4: CHECK THE GROUND TO THE DSC MODULE

Turn the ignition switch to the OFF position.
Measure the resistance between JB185, pin 05 (B) and GROUND.

Is the resistance greater than 5 ohms?
Yes

REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams.

No

GO to Y5

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Y5: CHECK THE MOTOR GROUND TO THE DSC MODULE

Measure the resistance between JB185, pin 01 (B) and GROUND.

Is the resistance greater than 5 ohms?
Yes

REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams.

No

No fault found with power or ground supplies. Check for DTCs indicating a module fault.

PINPOINT TEST Z : GSI MODULE SUPPLY OR GROUND FAULT

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

Z1: CHECK THE IGNITION SUPPLY TO THE GSI MODULE

Disconnect the GSI module connector, IP14.
Turn the ignition switch to the ON position.
Measure the voltage between IP14, pin 01 (W R) and GROUND.

Is the voltage less than 10 volts?
Yes

REPAIR the circuit between IP14, pin 01 and battery. This circuit includes the primary junction box, fuse 50. For
additional information, refer to the wiring diagrams.

No

GO to Z2

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Z2: CHECK THE GROUND TO THE GSI MODULE

Measure the resistance between IP14, pin 02 (B) and GROUND.

Is the resistance greater than 5 ohms?
Yes

REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams.

No

No fault found with power or ground supplies. Check for DTCs indicating a module fault.

PINPOINT TEST AA : HID MODULE SUPPLY OR GROUND FAULT

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

AA1: CHECK THE IGNITION SUPPLY TO THE HID MODULE

Disconnect the HID module connector, IP130.
Turn the ignition switch to the ON position.
Measure the voltage between IP130, pin 23 (W R) and GROUND.

Is the voltage less than 10 volts?
Yes

REPAIR the circuit between IP130, pin 23 and battery. This circuit includes the primary junction box, fuse 39. For
additional information, refer to the wiring diagrams.

No

GO to AA2

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AA2: CHECK THE GROUND TO THE HID MODULE

Measure the resistance between IP130, pin 24 (B) and GROUND.

Is the resistance greater than 5 ohms?
Yes

REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams.

No

No fault found with power or ground supplies. Check for DTCs indicating a module fault.

PINPOINT TEST AB : EATC MODULE SUPPLY OR GROUND FAULT

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

AB1: CHECK THE B+ SUPPLY TO THE EATC MODULE

Disconnect the EATC module connector, IP101.
Measure the voltage between IP101, pin 14 (OG) and GROUND.

Is the voltage less than 10 volts?
Yes

REPAIR the circuit between IP101, pin 14 and battery. This circuit includes the primary junction box, fuse 45. For
additional information, refer to the wiring diagrams.

No

GO to AB2

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AB2: CHECK THE IGNITION SUPPLY TO THE EATC MODULE

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Turn the ignition switch to the ON position.
Measure the voltage between IP101, pin 02 (WR) and GROUND.

Is the voltage less than 10 volts?
Yes

REPAIR the circuit between IP101, pin 02 and battery. This circuit includes the primary junction box, fuse 39, and the
ignition relay. For additional information, refer to the wiring diagrams.

No

GO to AB3

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AB3: CHECK THE B+ SAVE SUPPLY TO THE EATC MODULE

Turn the ignition switch to the OFF position.
Measure the voltage between IP101, pin 01 (OY) and GROUND.

Is the voltage less than 10 volts?
Yes

REPAIR the circuit between IP101, pin 01 and battery. This circuit includes the primary junction box, fuse 49, and the
battery save relay. For additional information, refer to the wiring diagrams.

No

GO to AB4

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AB4: CHECK THE GROUND TO THE EATC MODULE

Measure the resistance between IP101, pin 15 (B) and GROUND.

Is the resistance greater than 5 ohms?
Yes

REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams.

No

No fault found with power or ground supplies. Check for DTCs indicating a module fault.

PINPOINT TEST AC : MEMORY SEAT MODULE SUPPLY OR GROUND FAULT

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

AC1: CHECK THE B+1 SUPPLY TO THE MEMORY SEAT MODULE

Disconnect the memory seat module connector, DM02.
Measure the voltage between DM02, pin 01 (OG) and GROUND.

Is the voltage less than 10 volts?
Yes

REPAIR the circuit between DM02, pin 01 and battery. This circuit includes the primary junction box, fuse 16. For
additional information, refer to the wiring diagrams.

No

GO to AC2

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AC2: CHECK THE B+2 SUPPLY TO THE MEMORY SEAT MODULE

Measure the voltage between DM02, pin 06 (GB) and GROUND.

Is the voltage less than 10 volts?
Yes

REPAIR the circuit between DM02, pin 06 and battery. This circuit includes the primary junction box, fuse 09. For
additional information, refer to the wiring diagrams.

No

GO to AC3

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AC3: CHECK THE IGNITION SUPPLY TO THE MEMORY SEAT MODULE

Turn the ignition switch to the ON position.
Measure the voltage between DM02, pin 04 (GB) and GROUND.

Is the voltage less than 4 volts?
Yes

REPAIR the circuit between DM02, pin 04 and battery. This circuit includes the primary junction box, fuse 07. For
additional information, refer to the wiring diagrams.

No

GO to AC4

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AC4: CHECK THE ELECTRONIC GROUND TO THE MEMORY SEAT MODULE

Turn the ignition switch to the OFF position.
Measure the resistance between DM02, pin 10 (B) and GROUND.

Is the resistance greater than 5 ohms?
Yes

REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams.

No

GO to AC5

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AC5: CHECK THE POWER GROUND TO THE MEMORY SEAT MODULE

Measure the resistance between DM02, pin 05 (B) and GROUND.

Is the resistance greater than 5 ohms?
Yes

REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams.

No

GO to AC6

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AC6: CHECK THE SIGNAL GROUND TO THE MEMORY SEAT MODULE

Measure the resistance between DM02, pin 03 (B) and GROUND.

Is the resistance greater than 5 ohms?
Yes

REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams.

No

No fault found with power or ground supplies. Check for DTCs indicating a module fault.

PINPOINT TEST AD : TCM (16 BIT) SUPPLY OR GROUND FAULT

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

AD1: CHECK THE B+ SUPPLY TO THE TCM

Disconnect the TCM connector, JB131.
Measure the voltage between JB131, pin 06 (UY) and GROUND.

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Is the voltage less than 10 volts?
Yes

REPAIR the circuit between JB131, pin 06 and battery. This circuit includes the front power distribution box, fuse 32.
For additional information, refer to the wiring diagrams.

No

GO to AD2

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AD2: CHECK THE IGNITION 1 SUPPLY TO THE TCM

Turn the ignition switch to the ON position.
Measure the voltage between JB131, pin 36 (WU) and GROUND.

Is the voltage less than 10 volts?
Yes

REPAIR the circuit between JB131, pin 36 and battery. This circuit includes the front power distribution box, fuse 11,
and the ignition relay. For additional information, refer to the wiring diagrams.

No

GO to AD3

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AD3: CHECK THE IGNITION 2 SUPPLY TO THE TCM

Turn the ignition switch to the ON position.
Measure the voltage between JB131, pin 54 (WU) and GROUND.

Is the voltage less than 10 volts?
Yes

REPAIR the circuit between JB131, pin 54 and battery. This circuit includes the front power distribution box, fuse 11,
and the ignition relay. For additional information, refer to the wiring diagrams.

No

GO to AD4

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AD4: CHECK THE GROUND 1 TO THE TCM

Turn the ignition switch to the OFF position.
Measure the resistance between JB131, pin 09 (B) and GROUND.

Is the resistance greater than 5 ohms?
Yes

REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams.

No

GO to AD5

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AD5: CHECK THE GROUND 2 TO THE TCM

Measure the resistance between JB131, pin 38 (B) and GROUND.

Is the resistance greater than 5 ohms?
Yes

REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams.

No

No fault found with power or ground supplies. Check for DTCs indicating a module fault.

PINPOINT TEST AE : TCM (32 BIT) SUPPLY OR GROUND FAULT

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

AE1: CHECK THE B+ SUPPLY TO THE TCM

Disconnect the TCM connector, JB231.
Measure the voltage between JB231, pin 28 (UY) and GROUND.

Is the voltage less than 10 volts?
Yes

REPAIR the circuit between JB231, pin 28 and battery. This circuit includes the front power distribution box, fuse 32.
For additional information, refer to the wiring diagrams.

No

GO to AE2

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AE2: CHECK THE IGNITION 1 SUPPLY TO THE TCM

Turn the ignition switch to the ON position.
Measure the voltage between JB231, pin 10 (WU) and GROUND.

Is the voltage less than 10 volts?
Yes

REPAIR the circuit between JB231, pin 10 and battery. This circuit includes the front power distribution box, fuse 11,
and the ignition relay. For additional information, refer to the wiring diagrams.

No

GO to AE3

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AE3: CHECK THE IGNITION 2 SUPPLY TO THE TCM

Turn the ignition switch to the ON position.
Measure the voltage between JB231, pin 19 (WU) and GROUND.

Is the voltage less than 10 volts?
Yes

REPAIR the circuit between JB231, pin 19 and battery. This circuit includes the front power distribution box, fuse 11,
and the ignition relay. For additional information, refer to the wiring diagrams.

No

GO to AE4

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AE4: CHECK THE GROUND 1 TO THE TCM

Turn the ignition switch to the OFF position.
Measure the resistance between JB231, pin 25 (B) and GROUND.

Is the resistance greater than 5 ohms?
Yes

REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams.

No

GO to AE5

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AE5: CHECK THE GROUND 2 TO THE TCM

Measure the resistance between JB231, pin 38 (B) and GROUND.

Is the resistance greater than 5 ohms?
Yes

REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams.

No

No fault found with power or ground supplies. Check for DTCs indicating a module fault.

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PINPOINT TEST AF : ECM SUPPLY OR GROUND FAULT (VEHICLES WITH 2.0L PETROL ENGINE)

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

AF1: CHECK THE B+ SUPPLY TO THE ECM

Turn the ignition switch to the OFF position.
Disconnect the ECM connector, EN65.
Measure the voltage between EN65, pin 21 (NR) and GROUND.

Is the voltage less than 10 volts?
Yes

REPAIR the circuit between EN65, pin 21 and battery. This circuit includes the front power distribution box, fuse 36.
For additional information, refer to the wiring diagrams.

No

GO to AF2

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AF2: CHECK THE CONTROL SUPPLY TO THE ECM

Turn the ignition switch to the ON position.
Measure the voltage between EN65, pin 69 (B) and GROUND.

Is the voltage less than 10 volts?
Yes

REPAIR the circuit between EN65, pin 69 and battery. This circuit includes the EMS control relay, pin 2. For additional
information, refer to the wiring diagrams.

No

GO to AF3

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AF3: CHECK THE POWER GROUND (1) TO THE ECM

Turn the ignition switch to the OFF position.
Measure the resistance between EN65, pin 19 (B) and GROUND.

Is the resistance greater than 5 ohms?
Yes

REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams.

No

GO to AF4

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AF4: CHECK THE POWER GROUND (2) TO THE ECM

Measure the resistance between EN65, pin 18 (B) and GROUND.

Is the resistance greater than 5 ohms?
Yes

REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams.

No

No fault found with power or ground supplies. Check for DTCs indicating a module fault.

PINPOINT TEST AG : ECM SUPPLY OR GROUND FAULT (VEHICLES WITH 2.5/3.0L PETROL ENGINE)

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

AG1: CHECK THE B+ SUPPLY TO THE ECM

Turn the ignition switch to the OFF position.
Disconnect the ECM connector, EN16.
Measure the voltage between EN16, pin 22 (NR) and GROUND.

Is the voltage less than 10 volts?
Yes

REPAIR the circuit between EN16, pin 22 and battery. This circuit includes the front power distribution box, fuse 36.
For additional information, refer to the wiring diagrams.

No

GO to AG2

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AG2: CHECK THE CONTROL SUPPLY TO THE ECM

Turn the ignition switch to the ON position.
Measure the voltage between EN16, pin 40 (B) and GROUND.

Is the voltage less than 10 volts?
Yes

REPAIR the circuit between EN16, pin 40 and battery. This circuit includes the EMS control relay, pin 02. For
additional information, refer to the wiring diagrams.

No

GO to AG3

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AG3: CHECK THE POWER GROUND (1) TO THE ECM

Turn the ignition switch to the OFF position.
Measure the resistance between EN16, pin 04 (B) and GROUND.

Is the resistance greater than 5 ohms?
Yes

REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams.

No

GO to AG4

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AG4: CHECK THE POWER GROUND (2) TO THE ECM

Measure the resistance between EN16, pin 05 (B) and GROUND.

Is the resistance greater than 5 ohms?
Yes

REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams.

No

No fault found with power or ground supplies. Check for DTCs indicating a module fault.

PINPOINT TEST AH : ECM SUPPLY OR GROUND FAULT (VEHICLES WITH 2.0L DIESEL ENGINE)

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

AH1: CHECK THE B+ SUPPLY TO THE ECM

Turn the ignition switch to the OFF position.
Disconnect the ECM connector, DL01.
Measure the voltage between DL01, pin 03 (W G) and GROUND.