Jaguar XJ (X350). Manual — part 1583

-> No
GO to Pinpoint Test G1043827t143.

G1043827t143 : CHECK THE PASSENGER SEAT BELT
BUCKLE SWITCH CIRCUIT FOR SHORT TO POWER

1. Measure the voltage between CR87, pin 26 (RU) and GROUND.

•

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 G1043827t144.

G1043827t144 : CHECK THE PASSENGER SEAT BELT
BUCKLE SWITCH GROUND CIRCUIT FOR HIGH
RESISTANCE

1. Measure the resistance between SP19, pin 04 (BK) and GROUND.

•

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 G1043827t145.

G1043827t145 : CHECK THE PASSENGER SEAT BELT
BUCKLE SWITCH GROUND CIRCUIT FOR SHORT
TO POWER

1. Measure the voltage between SP19, pin 04 (BK) and GROUND.

•

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
INSTALL a new passenger seat belt buckle switch,
Front Safety Belt Buckle (76.73.49)

PINPOINT TEST G1043827p25 : DTC
B1891, B1892: FLASH CODE 53:
AUDIBLE WARNING CIRCUIT
MALFUNCTION

G1043827t146 : CHECK THE AUDIBLE WARNING
CIRCUIT FOR HIGH RESISTANCE

1. Disconnect the battery negative terminal. 2. Wait one minute for the system to become safe.
3. Disconnect the RCM electrical connector, CR86. 4. Disconnect the instrument cluster
electrical connector, IP05. 5. Measure the resistance between CR86, pin 22 (YR) and IP05,
pin 08 (YR).

•

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 G1043827t147.

G1043827t147 : CHECK THE AUDIBLE WARNING
CIRCUIT FOR SHORT TO GROUND

1. Reconnect the battery negative terminal. 2. Measure the resistance between CR86, pin 22
(YR) 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 G1043827t148.

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G1043827t148 : CHECK THE AUDIBLE WARNING
CIRCUIT FOR SHORT TO POWER

1. Measure the voltage between CR86, pin 22 (YR) and GROUND.

•

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
Contact dealer technical support for advice on possible RCM failure.

PINPOINT TEST G1043827p26 : DTC
C1947, C1948, C1981: FLASH CODE 49:
DRIVER SEAT POSITION SWITCH
MALFUNCTION (VEHICLES WITHOUT
PASSENGER SEAT POSITION SWITCH)

G1043827t134 : CHECK THE DRIVER SEAT POSITION
SWITCH SIGNAL CIRCUIT FOR HIGH RESISTANCE

1. Disconnect the battery negative terminal. 2. Wait one minute for the system to become safe.
3. Disconnect the RCM electrical connector, CR87. 4. Disconnect the driver seat position
switch electrical connector, SD20. 5. Measure the resistance between CR87, pin 23 (UY) and
SD20, pin 02 (UY).

•

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 G1043827t135.

G1043827t135 : CHECK THE DRIVER SEAT POSITION
SWITCH SIGNAL CIRCUIT FOR SHORT TO
GROUND

1. Reconnect the battery negative terminal. 2. Measure the resistance between CR87, pin 23
(UY) 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 G1043827t149.

G1043827t149 : CHECK THE DRIVER SEAT POSITION
SWITCH SIGNAL CIRCUIT FOR SHORT TO HIGH
VOLTAGE

1. Measure the voltage between CR87, pin 23 (UY) and GROUND.

•

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 G1043827t150.

G1043827t150 : CHECK THE DRIVER SEAT POSITION
SWITCH RETURN CIRCUIT FOR HIGH RESISTANCE

1. Disconnect the battery negative terminal. 2. Wait one minute for the system to become safe.
3. Measure the resistance between CR87, pin 24 (U) and SD20, pin 01 (U).

•

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 G1043827t151.

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