PINPOINT TEST G356266p14

PINPOINT TEST G356266p14 : B2290 (FLASH CODE 16): OCCUPANT CLASSIFICATION SENSOR (OCS) SYSTEM FAULT

G356266t46 : CHECK THE POWER SUPPLY TO THE OCS
1. Disconnect the battery negative terminal.
2. Wait one minute for the backup power supply to deplete.
3. Disconnect the OCS connector, WS17.
4. Turn the ignition switch to the ON position.
5. Measure the voltage between WS17, pin G (GR) and GROUND.

- Is the voltage less than 10 volts?

-> Yes
REPAIR the circuit between the OCS and battery. CLEAR the DTC, test the system for normal operation.

-> No
GO to Pinpoint Test G356266t47.

G356266t47 : CHECK THE GEOUND TO THE OCS
1. Measure the resistance between WS17, pin D and GROUND.

- Is the resistance greater than 5 Ohms?

-> Yes
REPAIR the high resistance circuit. CLEAR the DTC, test the system for normal operation.

-> No
GO to Pinpoint Test G356266t48.

G356266t48 : CHECK THE SIGNAL CIRCUIT BETWEEN THE OCS AND THE SEAT TRANSDUCER FOR HIGH RESISTANCE
1. Disconnect the seat transducer connector, WS20.
2. Measure the resistance between WS17, pin K (U) and WS20, pin 02 (U).

- Is the resistance greater than 5 Ohms?

-> Yes
REPAIR the high resistance circuit. CLEAR the DTC, test the system for normal operation.

-> No
GO to Pinpoint Test G356266t49.

G356266t49 : CHECK THE SIGNAL CIRCUIT BETWEEN THE OCS AND THE SEAT TRANSDUCER FOR SHORT CIRCUIT TO BATTERY

1. Measure the resistance between WS17, pin K (U) and the battery positive terminal.

- Is the resistance less than 10,000 Ohms?

-> Yes
REPAIR the short circuit. CLEAR the DTC, test the system for normal operation.

-> No
GO to Pinpoint Test G356266t50.

G356266t50 : CHECK THE SIGNAL CIRCUIT BETWEEN THE OCS AND THE SEAT TRANSDUCER FOR SHORT CIRCUIT TO GROUND
1. Measure the resistance between WS17, pin K (U) and GROUND.

- Is the resistance less than 10,000 Ohms?

-> Yes
REPAIR the short circuit. CLEAR the DTC, test the system for normal operation.

-> No
GO to Pinpoint Test G356266t51.

G356266t51 : CHECK THE 5v CIRCUIT BETWEEN THE OCS AND THE SEAT TRANSDUCER FOR HIGH RESISTANCE
1. Measure the resistance between WS17, pin J (W) and WS20, pin 01 (W).

- Is the resistance greater than 5 Ohms?

-> Yes
REPAIR the high resistance circuit. CLEAR the DTC, test the system for normal operation.

-> No
GO to Pinpoint Test G356266t52.

G356266t52 : CHECK THE 5v CIRCUIT BETWEEN THE OCS AND THE SEAT TRANSDUCER FOR SHORT CIRCUIT TO BATTERY
1. Measure the resistance between WS17, pin J (W) and the battery positive terminal.

- Is the resistance less than 10,000 Ohms?

-> Yes
REPAIR the short circuit. CLEAR the DTC, test the system for normal operation.

-> No
GO to Pinpoint Test G356266t53.

G356266t53 : CHECK THE 5v CIRCUIT BETWEEN THE OCS AND THE SEAT TRANSDUCER FOR SHORT CIRCUIT TO GROUND
1. Measure the resistance between WS17, pin J (W) and GROUND.

- Is the resistance less than 10,000 Ohms?

-> Yes
REPAIR the short circuit. CLEAR the DTC, test the system for normal operation.

-> No
GO to Pinpoint Test G356266t54.

G356266t54 : CHECK THE GROUND CIRCUIT BETWEEN THE OCS AND THE SEAT TRANSDUCER FOR HIGH RESISTANCE
1. Measure the resistance between WS17, pin H (R) and WS20, pin 03 (R).

- Is the resistance greater than 5 Ohms?

-> Yes
REPAIR the high resistance circuit. CLEAR the DTC, test the system for normal operation.

-> No
GO to Pinpoint Test G356266t55.

G356266t55 : CHECK THE GROUND CIRCUIT BETWEEN THE OCS AND THE SEAT TRANSDUCER FOR SHORT CIRCUIT TO BATTERY
1. Measure the resistance between WS17, pin H (R) and the battery positive terminal.

- Is the resistance less than 10,000 Ohms?

-> Yes
REPAIR the short circuit. CLEAR the DTC, test the system for normal operation.

-> No
GO to Pinpoint Test G356266t56.

G356266t56 : CHECK THE GROUND CIRCUIT BETWEEN THE OCS AND THE SEAT TRANSDUCER FOR SHORT CIRCUIT TO GROUND
1. Measure the resistance between WS17, pin H (R) and GROUND.

- Is the resistance less than 10,000 Ohms?

-> Yes
REPAIR the short circuit. CLEAR the DTC, test the system for normal operation.

-> No
GO to Pinpoint Test G356266t57.

G356266t57 : CHECK THE CONTROLLER AREA NETWORK + CIRCUIT BETWEEN THE RCM AND THE OCS FOR HIGH RESISTANCE
1. Disconnect the RCM connector.

For vehicles with 2.5/3.0L engine;
- CA450.

2. Measure the resistance between the RCM connector, pin 17 (O) and WS17, pin E (O).
- Is the resistance greater than 5 Ohms?

-> Yes
REPAIR the high resistance circuit. CLEAR the DTC, test the system for normal operation.

-> No
GO to Pinpoint Test G356266t58.

G356266t58 : CHECK THE CONTROLLER AREA NETWORK - CIRCUIT BETWEEN THE RCM AND THE OCS FOR HIGH RESISTANCE
1. Measure the resistance between the RCM connector, pin 18 (U) and WS17, pin F (U).

- Is the resistance greater than 5 Ohms?

-> Yes
REPAIR the high resistance circuit. CLEAR the DTC, test the system for normal operation.

-> No
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