Jaguar XJ (X350). Manual — part 773

-> No

GO to Pinpoint Test G187746t19.

G187746t5 : CHECK HARNESS BETWEEN FPDB AND EGR FOR SHORT TO
GROUND

1. Disconnect the EGR valve electrical connector PI 15. 2. CHECK the resistance between PI 15 pin 2

(GU) and ground.

Is the resistance less than 10,000 Ohms?

-> Yes

REPAIR the circuit between the EGR valve and FPDB. INSTALL a new fuse. CLEAR DTC. To validate fix

drive vehicle between 30 mph (48 kph) and 40 mph (64 kph). Allow vehicle to idle for 2 minutes.

-> No

INSTALL a new fuse. CLEAR DTC. To validate fix drive vehicle between 30 mph (48 kph) and 40 mph

(64 kph). Allow vehicle to idle for 2 minutes.

G187746t6 : CHECK FOR BATTERY VOLTAGE AT FPDB

1. CHECK for voltage at FPDB electrical connector FH 32 pin 43 (GU).

Is the voltage less than 10 volts?

-> Yes

REPAIR the circuit between FPDB electrical connector FH 32 pin 43 (GU) and FPDB relay 5.

-> No

REPAIR the circuit between FPDB electrical connector FH 32 pin 43 (GU) and EGR valve electrical

connector PI 15 pin 2 (GU). CLEAR DTC. To validate fix drive vehicle between 30 mph (48 kph) and 40

mph (64 kph). Allow vehicle to idle for 2 minutes.

G187746t19 : CHECK FOR POWER SUPPLY TO EGR VALVE

1. Disconnect EGR valve electrical connector PI 15 2. MEASURE the voltage at PI 15 pin 5 (GU)

Is the voltage less than 10 volts?

-> Yes

REPAIR the circuit between PI 15 pin 5 (GU) and splice PIS 15. CLEAR DTC. TEST the system for normal

operation.

-> No

INSTALL a new EGR valve. CLEAR DTC. To validate fix drive vehicle between 30 mph (48 kph) and 40

mph (64 kph). Allow vehicle to idle for 2 minutes.

PINPOINT TEST G187746p2 : Diagnostic
Trouble Code (DTC) P0405 indicates
exhaust gas recirculation (EGR) valve
malfunction, short to battery/12volts

G187746t7 : CHECK FOR A SHORT TO BATTERY VOLTAGE

1. Disconnect the EGR valve electrical connectror PI 15. 2. TURN ignition switch to the ON position. 3.

Measure the voltage at PI 15 pin 4 (YU).

Is the voltage more than 1 volt?

-> Yes

GO to Pinpoint Test G187746t8.

-> No

GO to Pinpoint Test G187746t9.

G187746t8 : CHECK FOR A SHORT TO BATTERY VOLTAGE IN ECM

1. Disconnect ECM electrical connector PI 1. 2. Measure the voltage at PI 15 pin 4 (YU).

Is the voltage more than 1 volt?

-> Yes

REPAIR circuit between the PI 1 pin 57 (YU) and the EGR valve electrical connector PI 15 pin 4 (YU).

CLEAR DTC. To validate fix drive vehicle between 30 mph (48 kph) and 40 mph (64 kph). Allow vehicle

to idle for 2 minutes.

-> No

INSTALL a new ECM. <<303-14B>>CLEAR DTC. To validate fix drive vehicle between 30 mph (48 kph)

and 40 mph (64 kph). Allow vehicle to idle for 2 minutes.

G187746t9 : CHECK FOR A SHORT TO BATTERY VOLTAGE

1. Measure the voltage at PI 15 pin 1 (YG).

Is the voltage more than 1 volt?

-> Yes

GO to Pinpoint Test G187746t10.

-> No

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GO to Pinpoint Test G187746t11.

G187746t10 : CHECK FOR A SHORT TO BATTERY VOLTAGE IN ECM

1. Disconnect ECM electrical connector PI 1. 2. Measure the voltage at PI 15 pin 1 (YG).

Is the voltage more than 1 volt?

-> Yes

REPAIR circuit between the PI 1 pin 58 (YG) and the EGR valve electrical connector PI 15 pin 1 (YG).

CLEAR DTC. To validate fix drive vehicle between 30 mph (48 kph) and 40 mph (64 kph). Allow vehicle

to idle for 2 minutes.

-> No

INSTALL a new ECM. <<303-14B>>CLEAR DTC. To validate fix drive vehicle between 30 mph (48 kph)

and 40 mph (64 kph). Allow vehicle to idle for 2 minutes.

G187746t11 : CHECK FOR A SHORT TO BATTERY VOLTAGE

1. Measure the voltage at PI 15 pin 6 (YR).

Is the voltage more than 1 Volt?

-> Yes

GO to Pinpoint Test G187746t12.

-> No

GO to Pinpoint Test G187746t20.

G187746t12 : CHECK FOR A SHORT TO BATTERY VOLTAGE IN ECM

1. Disconnect ECM electrical connector PI 1. 2. Measure the voltage at PI 15 pin 6 (YR).

Is the voltage more than 1 volt?

-> Yes

REPAIR circuit between the PI 1 pin 59 (YR) and the EGR valve electrical connector PI 15 pin 6 (YR).

CLEAR DTC. To validate fix drive vehicle between 30 mph (48 kph) and 40 mph (64 kph). Allow vehicle

to idle for 2 minutes.

-> No

INSTALL a new ECM. <<303-14B>>CLEAR DTC. To validate fix drive vehicle between 30 mph (48 kph)

and 40 mph (64 kph). Allow vehicle to idle for 2 minutes.

G187746t20 : CHECK FOR A SHORT TO BATTERY VOLTAGE

1. Measure the voltage at PI 15 pin 3 (YU).

Is the voltage more than 1 Volt?

-> Yes

GO to Pinpoint Test G187746t21.

-> No

INSTALL a new EGR valve. CLEAR DTC. To validate fix drive vehicle between 30 mph (48 kph) and 40

mph (64 kph). Allow vehicle to idle for 2 minutes.

G187746t21 : CHECK FOR A SHORT TO BATTERY VOLTAGE IN ECM

1. Disconnect ECM electrical connector PI 1. 2. Measure the voltage at PI 15 pin 3 (YU).

Is the voltage more than 1 volt?

-> Yes

REPAIR circuit between the PI 1 pin 60 (YU) and the EGR valve electrical connector PI 15 pin 3 (YU).

CLEAR DTC. To validate fix drive vehicle between 30 mph (48 kph) and 40 mph (64 kph). Allow vehicle

to idle for 2 minutes.

-> No

INSTALL a new ECM. <<303-14B>>CLEAR DTC. To validate fix drive vehicle between 30 mph (48 kph)

and 40 mph (64 kph). Allow vehicle to idle for 2 minutes.

PINPOINT TEST G187746p3 : Diagnostic
Trouble Code (DTC) P0406 indicates
exhaust gas recirculation (EGR) valve
malfunction, short to ground/open circuit.

G187746t13 : CHECK FOR A SHORT TO GROUND

1. Disconnect the EGR valve electrical connectror PI 15. 2. Disconnect the engine control module

(ECM) electrical connectror PI 1. 3. Measure the resistance between the EGR valve electrical

connector PI 15 pin 4 (YU) and GROUND.

Is the resistance less than 10,000 ohms?

-> Yes

REPAIR the circuit between EGR valve electrical connector PI 15 pin 4 (YU) and ECM electrical

connector PI 1 pin 57 (YU). CLEAR DTC. To validate fix drive vehicle between 30 mph (48 kph) and 40

mph (64 kph). Allow vehicle to idle for 2 minutes.

-> No

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