Jaguar XJ (X350). Manual — part 776

EGR stepper connector, PI15

Battery

Pin 04

Negative terminal

Pin 01

Pin 06

Pin 03

Is the resistance less than 10,000 ohms?

-> Yes

REPAIR the short circuit. For additional information, refer to the wiring diagrams. CLEAR the DTCs

and test the system for normal operation.

-> No

GO to Pinpoint Test G528708t3.

G528708t3 : CHECK THE EGR STEPPER CONTROL CIRCUITS FOR SHORT
CIRCUIT TO POWER

1. Measure the resistance between:

EGR stepper connector, PI15

Battery

Pin 04

Positive terminal

Pin 01

Pin 06

Pin 03

Is the resistance less than 10,000 ohms?

-> Yes

REPAIR the short circuit. For additional information, refer to the wiring diagrams. CLEAR the DTCs

and test the system for normal operation.

-> No

GO to Pinpoint Test G528708t4.

G528708t4 : CHECK THE EGR STEPPER CONTROL CIRCUITS FOR HIGH
RESISTANCE

1. Key off. 2. Disconnect the ECM electrical connector, EC300. 3. Measure the resistance between:

EGR stepper connector, PI15 ECM connector, EC300

Pin 04

Pin 53

Pin 01

Pin 52

Pin 06

Pin 51

Pin 03

Pin 50

Is the resistance greater than 5 ohms?

-> Yes

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

DTC and test the system for normal operation.

-> No

INSTALL a new EGR valve.

Exhaust Gas Recirculation (EGR) Valve (17.45.01) CLEAR the DTC and test the system for normal

operation. Refer to the warranty policy and procedures manual if an ECM is suspect.

PINPOINT TEST G528708p2 : CHECK
THE SECONDARY AIR INJECTION
PUMP CIRCUITS

G528708t5 : CHECK THE SECONDARY AIR INJECTION PUMP RELAY SUPPLY
VOLTAGES

1. Key off. 2. Remove the secondary air injection pump relay. 3. Measure the voltage between:

Secondary air injection relay base

Battery

Pin 01

Negative terminal

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Pin 03

Is the voltage less than 10 volts?

-> Yes

REPAIR the circuit between the relay base and battery. This circuit includes in-line (fuse 2) and the

mega fuses. For additional information, refer to the wiring diagrams. CLEAR the DTC and test the

system for normal operation.

-> No

GO to Pinpoint Test G528708t10.

G528708t10 : CHECK THE SECONDARY AIR INJECTION RELAY TO PUMP
SUPPLY CIRCUIT FOR SHORT CIRCUIT TO GROUND

1. Disconnect the secondary air injection pump electrical connector, EC93. 2. Measure the resistance

between:

Secondary air injection relay base

Battery

Pin 05

Negative terminal

Is the resistance less than 10,000 ohms?

-> Yes

REPAIR the short circuit. For additional information, refer to the wiring diagrams. CLEAR the DTC and

test the system for normal operation.

-> No

GO to Pinpoint Test G528708t11.

G528708t11 : CHECK THE SECONDARY AIR INJECTION RELAY TO PUMP
SUPPLY CIRCUIT FOR SHORT CIRCUIT TO POWER

1. Measure the resistance between:

Secondary air injection relay base

Battery

Pin 05

Positive terminal

Is the resistance less than 10,000 ohms?

-> Yes

REPAIR the short circuit. For additional information, refer to the wiring diagrams. CLEAR the DTC and

test the system for normal operation.

-> No

GO to Pinpoint Test G528708t6.

G528708t6 : CHECK THE SECONDARY AIR INJECTION PUMP SIGNAL CIRCUIT
FOR SHORT CIRCUIT TO GROUND

1. Measure the resistance between:

Secondary air injection relay base

Battery

Pin 02

Negative terminal

Is the resistance less than 10,000 ohms?

-> Yes

REPAIR the short circuit. For additional information, refer to the wiring diagrams. CLEAR the DTC and

test the system for normal operation.

-> No

GO to Pinpoint Test G528708t7.

G528708t7 : CHECK THE SECONDARY AIR INJECTION PUMP SIGNAL CIRCUIT
FOR SHORT CIRCUIT TO POWER

1. Measure the resistance between:

Secondary air injection relay base

Battery

Pin 02

Positive terminal

Is the resistance less than 10,000 ohms?

-> Yes

REPAIR the short circuit. For additional information, refer to the wiring diagrams. CLEAR the DTC and

test the system for normal operation.

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