Jaguar XJ (X350). Manual — part 796

G552800t61 : CHECK THE SIGNAL AND RETURN CIRCUITS FOR SHORT
CIRCUIT TO EACH OTHER

1. Key off. 2. Disconnect the ECM connector, C101. 3. Key on, engine off. 4. Measure the resistance

between:

C70, harness side C70, harness side

Pin 04

Pin 03

Is the resistance greater than 100 Kohms?

-> Yes

GO to Pinpoint Test G552800t60.

-> No

REPAIR the short circuit. For additional information, refer to the wiring diagrams. Clear any DTCs, test

the system for normal operation.

G552800t60 : CHECK WHETHER THE SHORT CIRCUIT TO GROUND IS IN THE
HARNESS OR THE MODULE

1. Measure the resistance between:

C70, harness side

Battery

Pin 03

Negative terminal

Is the resistance greater than 100 Kohms?

-> Yes

An intermittent fault may be present in the wiring harness. Visually check for chaffed wires or other

physical damage to the harness. If no fault is found in the circuit, suspect the following

component(s): - ECM

-> No

REPAIR the short circuit. For additional information, refer to the wiring diagrams. Clear any DTCs, test

the system for normal operation.

G552800t62 : CHECK WHETHER THE SHORT CIRCUIT TO POWER IS IN THE
HARNESS OR THE MODULE

1. Key off. 2. Disconnect the ECM connector, C101. 3. Key on, engine off. 4. Measure the resistance

between:

C70, harness side

Battery

Pin 03

Positive terminal

Is the resistance greater than 100 Kohms?

-> Yes

An intermittent fault may be present in the wiring harness. Visually check for chaffed wires or other

physical damage to the harness. If no fault is found in the circuit, suspect the following

component(s): - ECM

-> No

REPAIR the short circuit. For additional information, refer to the wiring diagrams. Clear any DTCs, test

the system for normal operation.

G552800t54 : CHECK THE EGR ACTUATOR RETURN CIRCUIT FOR SHORT
CIRCUIT TO POWER

1. Measure the resistance between:

C70, harness side

Battery

Pin 04

Positive terminal

Is the resistance greater than 100 Kohms?

-> Yes

GO to Pinpoint Test G552800t56.

-> No

GO to Pinpoint Test G552800t58.

G552800t56 : CHECK THE SIGNAL AND RETURN CIRCUITS FOR SHORT
CIRCUIT TO EACH OTHER

1. Key off. 2. Disconnect the ECM connector, C101. 3. Key on, engine off. 4. Measure the resistance

between:

C70, harness side C70, harness side

Pin 04

Pin 03

www.

Is the resistance greater than 100 Kohms?

-> Yes

GO to Pinpoint Test G552800t59.

-> No

REPAIR the short circuit. For additional information, refer to the wiring diagrams. Clear any DTCs, test

the system for normal operation.

G552800t59 : CHECK THE EGR ACTUATOR RETURN CIRCUIT FOR HIGH
RESISTANCE

1. Measure the resistance between:

C70, harness side C101, harness side

Pin 04

Pin H2

Is the resistance less than 10 ohms?

-> Yes

An intermittent fault may be present in the wiring harness. Visually check for chaffed wires or other

physical damage to the harness. If no fault is found in the circuit, suspect the following

component(s): - ECM connector - ECM

-> No

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

DTCs, test the system for normal operation.

G552800t58 : CHECK WHETHER THE SHORT CIRCUIT TO POWER IS IN THE
HARNESS OR THE MODULE

1. Key off. 2. Disconnect the ECM connector, C101. 3. Key on, engine off. 4. Measure the resistance

between:

C70, harness side

Battery

Pin 01

Positive terminal

Is the resistance greater than 100 Kohms?

-> Yes

An intermittent fault may be present in the wiring harness. Visually check for chaffed wires or other

physical damage to the harness. If no fault is found in the circuit, suspect the following

component(s): - ECM

-> No

REPAIR the short circuit. For additional information, refer to the wiring diagrams. Clear any DTCs, test

the system for normal operation.

PINPOINT TEST G552800p4 : LEFT
HAND BANK EGR ACTUATOR

G552800t26 : CHECK THE LEFT HAND BANK EGR ACTUATOR RETURN
CIRCUIT

1.

Circuit

Pin

Signal from ECM

02

Ground from ECM 04

Power from ECM

03

2.

Circuit

Pin

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