B2909: FLASH CODE 16

: DTC B2290, B2909: FLASH CODE 16: OCCUPANT CLASSIFICATION SENSOR (OCM)/PASSENGER WEIGHT SENSOR (PWS)/ BELT TENSION SENSOR MALFUNCTION

G207085t4 : CHECK THE POWER SUPPLY TO THE OCM
1. Disconnect the battery negative terminal.
2. Wait one minute for the system to become safe.
3. Disconnect the OCM electrical connector, SP30.
4. Reconnect the battery negative terminal.
5. Turn the ignition switch to the ON position.
6. Measure the voltage between SP30, pin 22 (WU) and GROUND.

- Is the voltage greater than 10 volts?

-> Yes

-> No
REPAIR the circuit between the OCM and battery. This circuit includes the primary junction box (fuse 29). CLEAR the DTC. TEST the system for normal operation.

G207085t5 : CHECK THE GROUND TO THE OCM
1. Turn the ignition switch to the OFF position.
2. Measure the resistance between SP30, pin 23 (BK) 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
CHECK the CAN circuits

G207085t6 : CHECK THE POWER SUPPLY TO THE PWS
1. Disconnect the PWS electrical connector, SP02.
2. Turn the ignition switch to the ON position.
3. Measure the voltage between SP02, pin G (R) and GROUND.

- Is the voltage greater than 10 volts?

-> Yes
REPAIR the circuit between SP02, pin G and SP30, pin 09 (R). CLEAR the DTC. TEST the system for normal operation.

-> No

G207085t7 : CHECK THE PWS GROUND CIRCUIT FROM THE OCM FOR HIGH RESISTANCE
1. Disconnect the battery negative terminal.
2. Disconnect the OCM electrical connector, SP30.
3. Measure the resistance between SP02, pin D (BW) and SP30, pin 10 (BW).

- Is the resistance greater than 5 ohms?

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

-> No

G207085t8 : CHECK THE CAN + CIRCUIT BETWEEN THE OPM AND THE PWS FOR HIGH RESISTANCE
1. Measure the resistance between SP02, pin E (OY) and SP30, pin 12 (OY).

- Is the resistance greater than 5 ohms?

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

-> No

G207085t9 : CHECK THE CAN - CIRCUIT BETWEEN THE OPM AND THE PWS FOR HIGH RESISTANCE
1. Measure the resistance between SP02, pin F (UY) and SP30, pin 11 (UY).

- Is the resistance greater than 5 ohms?

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

-> No

G207085t10 : CHECK THE BELT TENSION SENSOR SIGNAL CIRCUIT TO THE PWS FOR HIGH RESISTANCE
1. Disconnect the belt tension sensor electrical connector, SP33.
2. Measure the resistance between SP33, pin 02 (B) and SP02, pin A (B).

- Is the resistance greater than 5 ohms?

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

-> No

G207085t11 : CHECK THE BELT TENSION SENSOR SIGNAL CIRCUIT TO THE PWS FOR SHORT TO GROUND
1. Reconnect the battery negative terminal.
2. Measure the resistance between SP33, pin 02 (B) 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

G207085t12 : CHECK THE BELT TENSION SENSOR SIGNAL CIRCUIT TO THE PWS FOR SHORT TO HIGH VOLTAGE
1. Measure the voltage between SP33, pin 02 (B) and GROUND.

- Is the voltage greater than 3 volts?

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

-> No

G207085t13 : CHECK THE BELT TENSION SENSOR GROUND CIRCUIT TO THE PWS FOR HIGH RESISTANCE
1. Measure the resistance between SP33, pin 03 (R) and SP02, pin C (R).

- Is the resistance greater than 5 ohms?

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

-> No

G207085t14 : CHECK THE BELT TENSION SENSOR GROUND CIRCUIT TO THE PWS FOR SHORT TO GROUND
1. Measure the resistance between SP33, pin 03 (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

G207085t15 : CHECK THE BELT TENSION SENSOR GROUND CIRCUIT TO THE PWS FOR SHORT TO HIGH VOLTAGE
1. Measure the voltage between SP33, pin 03 (R) and GROUND.

- Is the voltage greater than 3 volts?

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

-> No

G207085t16 : CHECK THE BELT TENSION SENSOR SUPPLY CIRCUIT TO THE PWS FOR HIGH RESISTANCE
1. Measure the resistance between SP33, pin 01 (Y) and SP02, pin B (Y).

- Is the resistance greater than 5 ohms?

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

-> No

G207085t17 : CHECK THE BELT TENSION SENSOR SUPPLY CIRCUIT TO THE PWS FOR SHORT TO GROUND
1. Measure the resistance between SP33, pin 01 (Y) 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

G207085t18 : CHECK THE BELT TENSION SENSOR SUPPLY CIRCUIT TO THE PWS FOR SHORT TO HIGH VOLTAGE
1. Measure the voltage between SP33, pin 01 (Y) and GROUND.

- Is the voltage greater than 3 volts?

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

-> No
INSTALL a new belt tension sensor. CLEAR the DTC. Allow a self-test to complete. TEST the system for normal operation. if the fault reoccurs, contact dealer technical support for advice on possible weight sensor failure.