Zero Occupant Classification Sensor (OCS)

WARNING: This page is about a different car, the 2004 Mercury Marauder, 2004 Mercury Grand Marquis, and 2004 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.

Ensure front passenger seat is empty. Connect scan tool to Data Link Connector (DLC). See USING SCAN TOOL . Use scan tool to trigger active command and zero OCS. If scan tool is not available, zeroing will occur during normal driving conditions. Perform system operation check. See SYSTEM OPERATION CHECK .

DIAGNOSTIC SYMPTOMS

Condition

Go To Test

AIR BAG warning light on continuously

TEST A: AIR BAG WARNING LIGHT ON CONTINUOUSLY-RCM DISCONNECTED OR INOPERATIVE

AIR BAG warning light flashing

⁽¹⁾

Audible tone/DTCs retrieved

⁽¹⁾

No communication with RCM

TEST Y: NO COMMUNICATION WITH RCM

⁽¹⁾	See DIAGNOSTIC TROUBLE CODE IDENTIFICATION table.

DIAGNOSTIC TROUBLE CODE IDENTIFICATION

Fault Code/Flash Code

Go To Test

B1231/13

⁽¹⁾

B1317

⁽²⁾

B1318

⁽³⁾

B1342/12

⁽⁴⁾

B1869⁽⁵⁾

TEST B: AIR BAG WARNING LIGHT CIRCUIT OPEN OR SHORT TO GROUND (DTC B1869)

B1870⁽⁵⁾

TEST C: AIR BAG WARNING LIGHT CIRCUIT SHORT TO BATTERY (DTC B1870)

B1891/53

TEST D: AIR BAG TONE WARNING INDICATOR CIRCUIT SHORT TO BATTERY (DTC B1891)

B1892/53.

TEST E: AIR BAG TONE WARNING INDICATOR CIRCUIT SHORT TO GROUND OR OPEN (DTC B1892)

B1921/14

TEST F: GROUND RESISTANCE TOO HIGH OR RCM NOT MOUNTED TO VEHICLE PROPERLY (DTC B1921)

B2290/16

TEST G: OCCUPANT CLASSIFICATION SENSOR (OCS) CIRCUIT FAULT (DTC B2290)

B2292/33

TEST H: RESTRAINT SYSTEM-SEAT BELT PRETENSIONER STATUS (DTC B2292)

B2292/34

TEST H: RESTRAINT SYSTEM-SEAT BELT PRETENSIONER STATUS (DTC B2292)

B2293/19

TEST I: RESTRAINT SYSTEM-AIR BAG STATUS (DTC B2293)

B2293/21

TEST I: RESTRAINT SYSTEM-AIR BAG STATUS (DTC B2293)

B2295/22

TEST J: RESTRAINT SYSTEM-SIDE AIR BAG STATUS (DTC B2295)

B2295/23

TEST J: RESTRAINT SYSTEM-SIDE AIR BAG STATUS (DTC B2295)

B2296/42

TEST K: RESTRAINT SYSTEM-CRASH SENSOR STATUS (DTC B2296)

B2296/43

TEST K: RESTRAINT SYSTEM-CRASH SENSOR STATUS (DTC B2296)

B2296/44

TEST K: RESTRAINT SYSTEM-CRASH SENSOR STATUS (DTC B2296)

B2432/51

TEST L: LEFT SEAT BELT BUCKLE CIRCUIT OPEN (DTC B2432)

B2433/51

TEST M: LEFT SEAT BELT BUCKLE CIRCUIT SHORT TO BATTERY (DTC B2433)

B2434/51

TEST N: LEFT SEAT BELT BUCKLE CIRCUIT SHORT TO GROUND (DTC B2434)

B2435/51

TEST O: LEFT SEAT BELT BUCKLE CIRCUIT RESISTANCE OUT OF RANGE (DTC B2435)

B2436/52

TEST P: RIGHT SEAT BELT BUCKLE CIRCUIT OPEN (DTC B2436)

B2437/52

TEST Q: RIGHT SEAT BELT BUCKLE CIRCUIT SHORT TO BATTERY (DTC B2437)

B2438/52

TEST R: RIGHT SEAT BELT BUCKLE CIRCUIT SHORT TO GROUND (DTC B2438)

B2439/52

TEST S: RIGHT SEAT BELT BUCKLE CIRCUIT RESISTANCE OUT OF RANGE (DTC B2439)

B2477/54

⁽⁶⁾

C1414/15

TEST T: INCORRECT VEHICLE IDENTIFICATION (DTC C1414)

C1946/49

TEST U: SEAT TRACK POSITION SENSOR CIRCUIT OPEN (DTC C1946)

C1947/49

TEST V: SEAT TRACK POSITION SENSOR CIRCUIT SHORT TO GROUND (DTC C1947)

C1948/49

TEST W: SEAT TRACK POSITION SENSOR CIRCUIT RESISTANCE OUT OF RANGE (DTC C1948)

C1982/49

TEST X: SEAT TRACK POSITION SENSOR CIRCUIT SHORT TO BATTERY (DTC C1982)

⁽¹⁾	Replace Restraints Control Module (RCM) and crash sensors. See REMOVAL & INSTALLATION .

⁽²⁾	Light continuous. Ensure battery voltage is less than 16 volts.

⁽³⁾	Light continuous. Ensure battery voltage is more than 9 volts.

⁽⁴⁾	If DTC B1342 and B2296 are active, go to TEST K: RESTRAINT SYSTEM-CRASH SENSOR STATUS (DTC B2296) . If DTC B1342 is active, replace RCM.

⁽⁵⁾	No light. Tone will sound only if additional DTCs are present.

⁽⁶⁾	Check part numbers of RCM and right front seat cushion. If a part numbers do not match, replace incorrect part with NEW part. If part numbers match, replace RCM.