Jaguar XJ (X350). Manual — part 1165

-> Yes

GO to Pinpoint Test G240070t7.

.

-> No

GO to Pinpoint Test G240070t5.

.

G240070t5 : CARRY OUT AN ACCELERATOR PEDAL POSITION SENSOR
COMPONENT CHECK

1. Remove the accelerator pedal. For additional information, refer to

2. Measure the resistance between pin 1 and pin 6 of the accelerator pedal. 3. Measure the

resistance between pin 4 and pin 5 of the accelerator pedal.

Is the resistance between pin 1 and pin 6 between 546 and 1134 ohms, and between pin 4 and

pin 5 between 975 and 2025 ohms?

-> Yes

GO to Pinpoint Test G240070t6.

.

-> No

INSTALL a new accelerator pedal. For additional information, refer to

CLEAR the DTC. TEST the system for normal operation.

G240070t6 : CHECK THE ACCELERATOR PEDAL DEMAND SENSOR CIRCUIT
FOR A SHORT TO GROUND

1. Disconnect the ECM electrical connector PI 1. 2. Measure the resistance between electrical

connector CA 88 pin 1 (O) and ground. 3. Measure the resistance between electrical connector CA88

pin 4 (B) and ground.

Is the resistance greater than 10,000 ohms?

-> Yes

GO to Pinpoint Test G240070t7.

.

-> No

REPAIR the accelerator pedal demand sensor circuit from the ECM to the accelerator pedal. CLEAR

the DTC. TEST the system for normal operation.

G240070t7 : CHECK THE ACCELERATOR PEDAL DEMAND SENSOR CIRCUIT
FOR OPEN CIRCUIT

1. Disconnect the ECM electrical connector PI 1 and the accelerator pedal electrical connector CA 88.

2. Measure the resistance between PI 1 pin 103 (O) and CA 88 pin 1 (O). 3. Measure the resistance

between PI 1 pin 102 (B) and CA 88 pin 4 (B).

Is the resistance less than 5 ohms?

-> Yes

DIAGNOSE the electronic engine control system. For additional information, refer to <<303-14>>.

-> No

REPAIR the accelerator pedal demand sensor circuit from the ECM to the accelerator pedal. CLEAR

the DTC. TEST the system for normal operation.

PINPOINT TEST G240070p3 : DTC
P0121, P0122, P0123

G240070t8 : CHECK THE POWER SUPPLY TO THE THROTTLE POSITION
SENSOR

1. Turn the ignition switch the to the RUN position. 2. Measure the voltage between the throttle

position sensor electrical connector PI 26 pin 4 (OY) and ground.

Is the voltage less than 4.5 volts?

-> Yes

GO to Pinpoint Test G240070t9.

.

-> No

GO to Pinpoint Test G240070t11.

.

G240070t9 : CHECK THE THROTTLE POSITION SENSOR POWER SUPPLY
CIRCUIT FOR OPEN CIRCUIT

1. Turn the ignition switch to the OFF position. 2. Disconnect the ECM electrical connector PI 1 and

the throttle position sensor electrical connector PI 26. 3. Measure the resistance between PI 1 pin 12

(OY) and PI 26 pin 4 (OY).

Is the resistance less than 5 ohms?

-> Yes

GO to Pinpoint Test G240070t10.

.

-> No

REPAIR the throttle position sensor power supply circuit from the ECM to the throttle position

sensor. CLEAR the DTC. TEST the system for normal operation.

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G240070t10 : CHECK THE THROTTLE POSITION SENSOR POWER SUPPLY
CIRCUIT FOR A SHORT TO GROUND

1. Measure the resistance between PI 26-pin 4 (OY) and ground.

Is the resistance greater than 10,000 ohms?

-> Yes

DIAGNOSE the electronic engine control system. For additional information, refer to <<303-14>>.

-> No

REPAIR the throttle position sensor power supply circuit from the ECM to the throttle position

sensor. CLEAR the DTC. TEST the system for normal operation.

G240070t11 : CHECK THE THROTTLE POSITION SENSOR GROUND CIRCUIT

1. Turn the ignition switch to the OFF position. 2. Disconnect the throttle position sensor electrical

connector PI 26. 3. Measure the resistance between PI 26 pin 1 (BG) and ground.

Is the resistance less than 5 ohms?

-> Yes

GO to Pinpoint Test G240070t13.

.

-> No

GO to Pinpoint Test G240070t12.

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G240070t12 : CHECK THE THROTTLE POSITION SENSOR GROUND WIRE
FOR OPEN CIRCUIT

1. Disconnect the ECM electrical connector PI I and the throttle position sensor electrical connector

PI 26. 2. Measure the resistance between PI 26 pin 1 (BG) and PI 1 pin 19 (BG).

Is the resistance less than 5 ohms?

-> Yes

GO to Pinpoint Test G240070t13.

.

-> No

REPAIR the throttle position sensor ground circuit from the ECM to the throttle position sensor.

CLEAR the DTC. TEST the system for normal operation.

G240070t13 : CHECK THE THROTTLE POSITION SENSOR

1. Measure the resistance between PI 26 pin 2 and PI 26 pin 4. 2. Measure the resistance between PI

26 pin 3 and PI 26 pin 4.

Are the resistor values the same?

-> Yes

GO to Pinpoint Test G240070t14.

.

-> No

INSTALL a new throttle body. For additional information refer to <<303-14>>.

G240070t14 : CHECK CONTINUITY OF THE THROTTLE POSITION SENSOR
OUTPUT CIRCUIT

1. Measure the resistance between PI 1 pin 75 (R) and PI 26 pin 3 (R). 2. Measure the resistance

between PI 1 pin 76 (Y) and PI 26 pin 2 (Y).

Is the resistance less than 5 ohms?

-> Yes

GO to Pinpoint Test G240070t15.

.

-> No

REPAIR the circuit from the ECM to the throttle position sensor. CLEAR the DTC. TEST the system for

normal operation.

G240070t15 : CHECK THE THROTTLE POSITION SENSOR OUTPUT CIRCUIT
FOR A SHORT TO GROUND

1. Measure the resistance between PI 26 pin 3 (R) and ground. 2. Measure the resistance between PI

26 pin 2 (Y) and ground.

Is the resistance greater than 10,000 ohms?

-> Yes

DIAGNOSE the electronic engine control system. For additional information, refer to <<303-14>>.

-> No

REPAIR the circuit from the ECM to the throttle position sensor. CLEAR the DTC. TEST the system for

normal operation.

PINPOINT TEST G240070p4 : DTC
P1251, P1658, P1631, P1657

G240070t16 : CHECK THE THROTTLE MOTOR RELAY

1. Turn the ignition switch to the RUN position.

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