Jaguar XJ (X350). Manual — part 915

-> 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 G258127t90.

G258127t90 : CHECK THE APP SENSOR SENSING CIRCUIT FOR SHORT TO
GROUND

1. Turn the ignition switch to the OFF position. 2. Measure the resistance between CR14, pin 04 (R)

and GROUND.

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 G258127t91.

G258127t91 : CHECK THE APP SENSOR SUPPLY VOLTAGE AT THE SENSOR

1. Reconnect the ECM electrical connector, PI01. 2. Turn the ignition switch to the ON position. 3.

Measure the voltage between CR14, pin 05 (Y) and GROUND.

Is the voltage less than 4 volts?

-> Yes

GO to Pinpoint Test G258127t92.

-> No

INSTALL a new APP sensor.

Accelerator Pedal (19.20.01) CLEAR the DTC. TEST the system for normal operation.

G258127t92 : CHECK THE APP SENSOR SUPPLY VOLTAGE CIRCUIT FOR
HIGH RESISTANCE

1. Turn the ignition switch to the OFF position. 2. Disconnect the ECM electrical connector, PI01. 3.

Measure the resistance between CR14, pin 05 (Y) and PI01, pin 13 (Y).

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

Check the ECM power supplies (recheck DTCs. P1104 may be flagged).

PINPOINT TEST G258127p24 : DTC
P1229; THROTTLE MOTOR CONTROL
CIRCUIT MALFUNCTION

G258127t93 : CHECK THE THROTTLE MOTOR - TO ECM CIRCUIT FOR HIGH
RESISTANCE

1. Disconnect the battery negative terminal. 2. Disconnect the throttle motor electrical connector,

PI18. 3. Disconnect the ECM electrical connector, PI01. 4. Measure the resistance between PI18, pin

01 (GW) and PI01, pin 80 (GW).

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 G258127t94.

G258127t94 : CHECK THE THROTTLE MOTOR + TO ECM CIRCUIT FOR HIGH
RESISTANCE

1. Measure the resistance between PI18, pin 02 (RW) and PI01, pin 106 (RW).

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 throttle body.

Throttle Body - 4.2L NA V8 - AJV8/3.5L NA V8 - AJV8, VIN Range: G00442->G45703 (19.70.04) CLEAR

the DTC. TEST the system for normal operation.

PINPOINT TEST G258127p25 : DTC
P1240, P1241, P1242; SENSOR SUPPLY

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VOLTAGE MALFUNCTION, HIGH/LOW
VOLTAGE

G258127t95 : CHECK THE SUPPLY VOLTAGE AT THE APP SENSOR

1. Disconnect the APP sensor electrical connector, CR14. 2. Turn the ignition switch to the ON

position. 3. Measure the voltage between CR14, pin 02 (OY) and GROUND.

Is the voltage less than 5 volts?

-> Yes

GO to Pinpoint Test G258127t96.

-> No

GO to Pinpoint Test G258127t97.

G258127t96 : CHECK THE APP SENSOR SUPPLY VOLTAGE CIRCUIT FOR
HIGH RESISTANCE

1. Disconnect the ECM electrical connector, PI01. 2. Measure the resistance between CR14, pin 02

(OY) and PI01, pin 12 (OY).

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 G258127t97.

G258127t97 : CHECK THE APP SENSOR SUPPLY VOLTAGE CIRCUIT FOR
SHORT TO HIGH VOLTAGE

1. Turn the ignition switch to the ON position. 2. Measure the voltage between CR14, pin 02 (OY) and

GROUND.

Is the voltage greater than 6 volts?

-> Yes

REPAIR the short circuit to high voltage. For additional information, refer to the wiring diagrams.

CLEAR the DTC. TEST the system for normal operation.

-> No

GO to Pinpoint Test G258127t98.

G258127t98 : CHECK THE APP SENSOR SUPPLY VOLTAGE CIRCUIT FOR
SHORT TO GROUND

1. Turn the ignition switch to the OFF position. 2. Measure the resistance between CR14, pin 02 (OY)

and GROUND.

Is the resistance less than 10,000 ohms?

-> Yes

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

the DTC. TEST the system for normal operation.

-> No

GO to Pinpoint Test G258127t99.

G258127t99 : CHECK THE SUPPLY VOLTAGE AT THE TP SENSOR

1. Disconnect the throttle position sensor electrical connector, PI26. 2. Turn the ignition switch to the

ON position. 3. Measure the voltage between PI26, pin 04 (OY) and GROUND.

Is the voltage less than 5 volts?

-> Yes

GO to Pinpoint Test G258127t100.

-> No

GO to Pinpoint Test G258127t101.

G258127t100 : CHECK THE TP SENSOR SUPPLY VOLTAGE CIRCUIT FOR
HIGH RESISTANCE

1. Turn the ignition switch to the OFF position. 2. Disconnect the ECM electrical connector, PI01. 3.

Measure the resistance between PI26, pin 04 (OY) and PI01, pin 12 (OY).

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 G258127t101.

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