Jaguar XJ (X350). Manual — part 943

Pin 02

Negative terminal

Is the voltage greater than 3 volts?

-> Yes

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

TEST the system for normal operation.

-> No

GO to Pinpoint Test G531332t47.

G531332t47 : CHECK THE EOT SENSOR SENSING CIRCUIT FOR SHORT
CIRCUIT TO GROUND

1. Key off. 2. Measure the resistance between:

EOT sensor connector PI24, harness side

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.

TEST the system for normal operation.

-> No

GO to Pinpoint Test G531332t48.

G531332t48 : CHECK THE EOT SENSOR GROUND CIRCUIT FOR HIGH
RESISTANCE

1. Measure the resistance between:

EOT sensor connector PI24, harness side ECM connector PI300, harness side

Pin 01

Pin 10

Is the resistance greater than 5 ohms?

-> Yes

REPAIR the high resistance circuit. This circuit includes harness splice, PIS49. For additional

information, refer to the wiring diagrams. CLEAR the DTC. TEST the system for normal operation.

-> No

INSTALL a new EOT sensor.

Oil Temperature Sensor (18.31.01) CLEAR the DTC. TEST the system for normal operation. If the DTC

is repeated, refer to the warranty policy and procedures manual if an ECM is suspect.

PINPOINT TEST G531332p14 : LEFT-
HAND CATALYST MONITOR SENSOR
SENSING CIRCUIT LOW/HIGH
VOLTAGE, NO ACTIVITY

G531332t49 : CHECK THE CATALYST MONITOR SENSOR SENSING CIRCUIT
FOR HIGH RESISTANCE

1. Key off. 2. Disconnect the catalyst monitor sensor electrical connector, PI13. 3. Disconnect the

ECM electrical connector, PI300. 4. Measure the resistance between:

Catalyst monitor sensor PI13, harness side ECM connector PI300, harness side

Pin 04

Pin 41

Is the resistance greater than 5 ohms?

-> Yes

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

DTC. TEST the system for normal operation.

-> No

GO to Pinpoint Test G531332t50.

G531332t50 : CHECK THE CATALYST MONITOR SENSOR SENSING CIRCUIT
FOR SHORT CIRCUIT TO POWER

1. Key on, engine off. 2. Measure the voltage between:

Catalyst monitor sensor PI13, harness side

Battery

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Pin 04

Negative terminal

Is the voltage greater than 3 volts?

-> Yes

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

TEST the system for normal operation.

-> No

GO to Pinpoint Test G531332t51.

G531332t51 : CHECK THE CATALYST MONITOR SENSOR SENSING CIRCUIT
FOR SHORT CIRCUIT TO GROUND

1. Key off. 2. Measure the resistance between:

Catalyst monitor sensor PI13, harness side

Battery

Pin 04

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.

TEST the system for normal operation.

-> No

GO to Pinpoint Test G531332t52.

G531332t52 : CHECK THE CATALYST MONITOR SENSOR GROUND CIRCUIT
FOR HIGH RESISTANCE

1. Measure the resistance between PI13, pin 03 (B) and PI300, pin 130 (BW).

Catalyst monitor sensor PI13, harness side ECM connector PI300, harness side

Pin 03

Pin 45

Is the resistance greater than 5 ohms?

-> Yes

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

DTC. TEST the system for normal operation.

-> No

INSTALL a new catalyst monitor sensor.

Catalyst Monitor Sensor (18.30.66) CLEAR the DTC. TEST the system for normal operation.

PINPOINT TEST G531332p15 : RIGHT-
HAND KNOCK SENSOR (KS)
HIGH/LOW VOLTAGE

G531332t53 : CHECK KS SENSING CIRCUIT FOR HIGH RESISTANCE

1. Key off. 2. Disconnect the KS electrical connector, PI19. 3. Disconnect the ECM electrical

connector, PI300. 4. Measure the resistance between:

KS connector PI19, harness side ECM connector PI300, harness side

Pin 04

Pin 42

Is the resistance greater than 5 ohms?

-> Yes

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

DTC. TEST the system for normal operation.

-> No

GO to Pinpoint Test G531332t54.

G531332t54 : CHECK KS SENSING CIRCUIT FOR SHORT CIRCUIT TO POWER

1. Key on, engine off. 2. Measure the voltage between:

KS connector PI19, harness side

Battery

Pin 04

Negative terminal

Is the voltage greater than 3 volts?

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