Jaguar XJ (X350). Manual — part 777

-> No

GO to Pinpoint Test G528708t12.

G528708t12 : CHECK THE SECONDARY AIR INJECTION RELAY TO PUMP
SUPPLY CIRCUIT FOR HIGH RESISTANCE

1. Disconnect the secondary air pump connector, EC93. 2. Measure the resistance between:

Secondary air injection relay base Secondary air pump connector, EC93

Pin 05

Pin 02

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

GO to Pinpoint Test G528708t13.

G528708t13 : CHECK THE SECONDARY AIR INJECTION PUMP GROUND
CIRCUIT FOR HIGH RESISTANCE

1. Measure the resistance between:

Secondary air pump connector, EC93

Battery

Pin 01

Negative terminal

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

GO to Pinpoint Test G528708t8.

G528708t8 : CHECK THE SECONDARY AIR INJECTION PUMP SIGNAL CIRCUIT
FOR HIGH RESISTANCE

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

Secondary air injection relay base ECM connector, EC300

Pin 02

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 secondary air injection pump relay. CLEAR the DTC and test the system for normal

operation.

PINPOINT TEST G528708p3 : (V8 N/A
FEDERAL SPECIFICATION ONLY)
CHECK THE SECONDARY AIR
INJECTION MAP SENSOR CIRCUITS

G528708t9 : CHECK THE SECONDARY AIR INJECTION MAP SENSOR SUPPLY
CIRCUIT FOR SHORT CIRCUIT TO GROUND

1. Key off. 2. Disconnect the secondary air injection MAP sensor electrical connector, EC120. 3.

Measure the resistance between:

Secondary air injection MAP sensor connector, EC120

Battery

Pin 01

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

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GO to Pinpoint Test G528708t14.

G528708t14 : CHECK THE SECONDARY AIR INJECTION MAP SENSOR SUPPLY
CIRCUIT FOR SHORT CIRCUIT TO POWER

1. Measure the resistance between:

Secondary air injection MAP sensor connector, EC120

Battery

Pin 01

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 G528708t15.

G528708t15 : CHECK THE SECONDARY AIR INJECTION MAP SENSOR SIGNAL
CIRCUIT FOR SHORT CIRCUIT TO GROUND

1. Measure the resistance between:

Secondary air injection MAP sensor connector, EC120

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 G528708t16.

G528708t16 : CHECK THE SECONDARY AIR INJECTION MAP SENSOR SIGNAL
CIRCUIT FOR SHORT CIRCUIT TO POWER

1. Measure the resistance between:

Secondary air injection MAP sensor connector, EC120

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.

-> No

GO to Pinpoint Test G528708t17.

G528708t17 : CHECK THE SECONDARY AIR INJECTION MAP SENSOR SUPPLY
CIRCUIT FOR HIGH RESISTANCE

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

Secondary air injection MAP sensor connector, EC120 ECM connector, EC300

Pin 01

Pin 19

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

GO to Pinpoint Test G528708t18.

G528708t18 : CHECK THE SECONDARY AIR INJECTION MAP SENSOR SIGNAL
CIRCUIT FOR HIGH RESISTANCE

1. Measure the resistance between:

Secondary air injection MAP sensor connector, EC120 ECM connector, EC300

Pin 02

Pin 13

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