Pre-Collision - Supplemental Restraint System: Diagnosis Lexus LS IV

HOW TO PROCEED WITH TROUBLESHOOTING

HINT

1. Use the procedures to troubleshoot the pre-collision system.
2. *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP
2. CHECK CAN COMMUNICATION SYSTEM* Using the Techstream, check if the CAN communication system is functioning normally. Result RESULT CHART Result Proceed to CAN DTC is not output A CAN DTC is output B B: Go to CAN COMMUNICATION SYSTEM (See «DIAGNOSTIC TROUBLE CODE CHART»(ref-349742-S02415032652009120800000) ) A: Go to Next Step
3. CHECK FOR DTC* Check for DTCs (see «DTC CHECK/CLEAR»(ref-349756-S34041201892009120800000) ). Clear the DTCs (see «DTC CHECK/CLEAR»(ref-349756-S34041201892009120800000) ). Recheck for DTCs (see «DTC CHECK/CLEAR»(ref-349756-S34041201892009120800000) ). Result RESULT CHART Result Proceed to DTC is not output A DTC is output B B: Go to step 6 A: Go to Next Step
4. PROBLEM SYMPTOMS TABLE Result RESULT CHART Result Proceed to Fault is not listed in problem symptoms table A Fault is listed in problem symptoms table B B: Go to step 6 A: Go to Next Step
5. OVERALL ANALYSIS AND TROUBLESHOOTING" Terminals of ECU (see «TERMINALS OF ECU»(ref-349756-S23208827642009120800000) ). Data List/Active Test (see «DATA LIST/ACTIVE TEST»(ref-349756-S38946708432009120800000) ).
6. ADJUST, REPAIR OR REPLACE
7. CONFIRMATION TEST NEXT: END

PROBLEM SYMPTOMS TABLE

HINT

If the normal codes for the pre-collision system and CAN communication system are output but the following problem symptoms are present, perform the malfunction diagnosis by following the "Suspected Area" procedures below.

Pre-collision system

PROBLEM SYMPTOMS CHART - PRE-COLLISION SYSTEM

Scheme 4

Scheme 5

1. CHECK SEAT BELT CONTROL ECU Disconnect the S45 and S47 ECU connectors. Measure the voltage and resistance according to the value(s) in the table below. TERMINAL DESCRIPTION Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition S45-7 (+B) - Body ground B - Body ground +B power supply Always 11 to 14 V S47-8 (IG1) - Body ground G - Body ground IG1 power supply Engine switch on (IG) 11 to 14 V S47-8 (IG1) - Body ground G - Body ground IG1 power supply Engine switch off Below 1 V S45-8 (PGND) - Body ground W-B - Body ground Body ground Always Below 1 ohms If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the S45 and S47 ECU connectors. Measure the voltage according to the value(s) in the table below. TERMINAL DESCRIPTION Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition S45-2 (MOR+) - S45-1 (MOR-) R - G Seat belt motor RH circuit Engine switch on (IG), seat belt motor RH operates 4.0 to 8.5 V S45-2 (MOR+) - S45-1 (MOR-) R - G Seat belt motor RH circuit Engine switch on (IG), seat belt motor RH not operates Below 1 V S45-3 (MOL+) - S45-4 (MOL-) W - L Seat belt motor LH circuit Engine switch on (IG), seat belt motor LH operates 4.0 to 8.5 V S45-3 (MOL+) - S45-4 (MOL-) W - L Seat belt motor LH circuit Engine switch on (IG), seat belt motor LH not operates Below 1 V If the result is not as specified, the ECU may have a malfunction.
2. CHECK DRIVING SUPPORT ECU Disconnect the A33 ECU connector. Measure the voltage and resistance according to the value(s) in the table below. TERMINAL DESCRIPTION Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition A33-13 (B) - Body ground Y - Body ground Power supply Engine switch on (IG) 9.5 to 16 V A33-13 (B) - Body ground Y - Body ground Power supply Engine switch off Below 1 V A33-25 (GND) - Body ground W-B - Body ground Body ground Always Below 1 ohms A33-11 (STP-) - Body ground BE - Body ground Stop light switch signal input Depress brake pedal 7.5 to 14 V A33-11 (STP-) - Body ground BE - Body ground Stop light switch signal input Release brake pedal Below 1 V A33-34 (ST1-) - Body ground G - Body ground Stop light switch signal input Engine switch on (IG), release brake pedal 7.5 to 14 V A33-34 (ST1-) - Body ground G - Body ground Stop light switch signal input Engine switch on (IG), depress brake pedal Below 1 V If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the A33 ECU connectors. Measure the voltage according to the value(s) in the table below. TERMINAL DESCRIPTION Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition A33-36 (IGB) - Body ground W - Body ground Front millimeter wave radar sensor power supply Engine switch on (IG) 9.5 to 16 V A33-36 (IGB) - Body ground W - Body ground Front millimeter wave radar sensor power supply Engine switch off Below 1 V If the result is not as specified, the ECU may have a malfunction.

Scheme 6

1. INITIAL CHECK 2 seconds or more after turning the engine switch off, turning the engine switch on (IG) causes the pre-collision system to perform an initial check for approximately 3 seconds. If a malfunction is detected in the initial check, after the 3 second initial check, the combination meter assembly's multi-information display displays "Check PCS system". HINT: "Check PCS system" is displayed when a pre-collision system malfunction has been detected and a DTC is output.
2. CONSTANT CHECK After the 3 second initial check, the seat belt control ECU and driving support ECU control the system, and perform a constant check to monitor the system. If a malfunction is detected in the constant check, the combination meter assembly's multi-information display displays "Check PCS system" or "PCS not Available Now". HINT: "PCS not Available Now" is displayed during the following conditions: 1) the seat belt control ECU'S overheat protection function has operated; 2) due to bad weather, the radar can detect obstacles; 3) foreign matter is attached to the grille cover or front millimeter wave radar sensor assembly; or 4) foreign matter is attached to the rear bumper or rear millimeter wave radar sensor assembly.

DTC CHECK/CLEAR

1. CHECK DTC Turn the engine switch off. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Using the Techstream, enter the following menus: Body Electrical/Pre-Collision 1/Trouble Code / Check for DTCs. Using the Techstream, enter the following menus: Body Electrical/Pre-Collision 2/Trouble Code / Check for DTCs. HINT: As the driving support ECU and seat belt control ECU output DTCs for the pre-collision system, be sure to check the DTCs Pre-Collision 1 and Pre-Collision 2.
2. CLEAR DTC Turn the engine switch off. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Using the Techstream, enter the following menus: Body Electrical/Pre-Collision 1/Trouble Code / Select "CLEAR", and clear the data. Using the Techstream, enter the following menus: Body Electrical/Pre-Collision 2/Trouble Code / Select "CLEAR", and clear the data. HINT: As the driving support ECU and seat belt control ECU output DTCs for the pre-collision system, be sure to check the DTCs Pre-Collision 1 and Pre-Collision 2.

DATA LIST/ACTIVE TEST

1. DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensor, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may by discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time. NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. Warm up the engine. Turn the engine switch off. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn ON the Techstream. Enter the following menus: All ECUs/(desired menu)/Data List / According to the display on tester, read "Data List". Pre-Collison 1 PRE-COLLISON 1 - DATA LIST Tester Display Measurement Item/Range Normal Condition Diagnostic Note Driver Buckle SW Driver side buckle switch status of driver side seat/UNSET, SET or NG UNSET: Unfasten driver side seat belt SET: Fasten driver side seat belt NG: Indeterminate data - Passenger Buckle SW Front passenger side buckle switch status of passenger side seat/UNSET, SET or NG UNSET: Unfasten passenger side seat belt SET: Fasten passenger side seat belt NG: Indeterminate data - Driver Belt Control Seat belt control status of driver side seat/STOP, ON or ERROR STOP: Control stopped ON: Controlled ERROR: Indeterminate data Seat belt (driver side) is fastened Passenger Belt Control Seat belt control status of passenger side seat/STOP, ON or ERROR STOP: Control stopped ON: Controlled ERROR: Indeterminate data Seat belt (passenger side) is fastened Number of Trouble Codes Number of present trouble codes/min.: 0, max.: 255 Number of DTCs will be displayed - Radar Cruise RADAR CRUISE - DATA LIST Tester Display Measurement Item/Range Normal Condition Diagnostic Note Country (FRS) Front millimeter wave radar sensor country signal/JPN, NA, EURO, GEN Actual country code
2. ACTIVE TEST HINT: Using the Techstream to Perform the Active Tests allows relays, VSVs and actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active test early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests. Warm up the engine. Turn the engine switch off. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn ON the Techstream. Enter the following menus: All ECUs/(desired menu)/Active Test / According to the display on the tester, perform the "ACTIVE TEST". Pre-Collision 1 PRE-COLLISION 1 - ACTIVE TEST Tester Display Test Part Control Range Diagnostic Note Driver Seat Belt Motor Driver side seat belt motor ON/OFF - Passenger Seat Belt Motor Passenger side seat belt motor ON/OFF - Driver and Passenger Seat Belt Motor Driver and passenger side seat belt motor ON/OFF

DIAGNOSTIC TROUBLE CODE CHART

HINT

If a trouble code is displayed during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the "DTC Code" below.

Pre-collision system

PRE-COLLISION SYSTEM - DIAGNOSTIC TROUBLE CODE CHART

INSPECTION PROCEDURE

Scheme 7

Scheme 8

1. CHECK SEAT BELT CONTROL ECU Disconnect the S45 ECU connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard voltage VOLTAGE SPECIFICATION Tester Connection Switch Condition Specified Condition S45-3 (MOL+) - Body ground*1 Engine switch on (IG) Below 1 V S45-4 (MOL-) - Body ground*1 Engine switch on (IG) Below 1 V S45-2 (MOR+) - Body ground*2 Engine switch on (IG) Below 1 V S45-1 (MOR-) - Body ground*2 Engine switch on (IG) Below 1 V HINT: *1: for LH *2: for RH NG: Go to step 2 OK: REPLACE SEAT BELT CONTROL ECU (See «REMOVAL»(ref-349756-S23803363232009120800000) )
2. CHECK HARNESS AND CONNECTOR (FRONT SEAT OUTER BELT - SEAT BELT CONTROL ECU) Disconnect the S4*1 and R2*2 belt connectors. HINT: *1: for LH *2: for RH Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard voltage VOLTAGE SPECIFICATION Tester Connection Switch Condition Specified Condition S4-1 - Body ground*1 Engine switch on (IG) Below 1 V S4-2 - Body ground*1 Engine switch on (IG) Below 1 V R2-2 - Body ground*2 Engine switch on (IG) Below 1 V R2-1 - Body ground*2 Engine switch on (IG) Below 1 V Result RESULT CHART Result Proceed to NG A OK (B2000 is output) B OK (B2005 is output) C B: REPLACE FRONT SEAT OUTER BELT ASSEMBLY RH (See «REMOVAL»(ref-349752-S27117964692009120800000) ) C: REPLACE FRONT SEAT OUTER BELT ASSEMBLY LH (See «REMOVAL»(ref-349752-S27117964692009120800000) ) A: REPAIR OR REPLACE HARNESS OR CONNECTOR

1. CHECK SEAT BELT CONTROL ECU Disconnect the S45 ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance RESISTANCE SPECIFICATION Tester Connection Condition Specified Condition S45-3 (MOL+) - Body ground*1 Always 10 kohms or higher S45-4 (MOL-) - Body ground*1 Always 10 kohms or higher S45-2 (MOR+) - Body ground*2 Always 10 kohms or higher S45-1 (MOR-) - Body ground*2 Always 10 kohms or higher HINT: *1: for LH *2: for RH NG: Go to step 2 OK: REPLACE SEAT BELT CONTROL ECU (See «REMOVAL»(ref-349756-S23803363232009120800000) )
2. CHECK HARNESS AND CONNECTOR (FRONT SEAT OUTER BELT - SEAT BELT CONTROL ECU) Disconnect the S4*1 and R2*2 belt connectors. HINT: *1: for LH *2: for RH Measure the resistance according to the value(s) in the table below. Standard resistance RESISTANCE SPECIFICATION Tester Connection Condition Specified Condition S4-1 - Body ground*1 Always 10 kohms or higher S4-2 - Body ground*1 Always 10 kohms or higher R2-1 - Body ground*2 Always 10 kohms or higher R2-2 - Body ground*2 Always 10 kohms or higher Result RESULT CHART Result Proceed to NG A OK (B2001 is output) B OK (B2006 is output) C B: REPLACE FRONT SEAT OUTER BELT ASSEMBLY RH (See «REMOVAL»(ref-349752-S27117964692009120800000) ) C: REPLACE FRONT SEAT OUTER BELT ASSEMBLY LH (See «REMOVAL»(ref-349752-S27117964692009120800000) ) A: REPAIR OR REPLACE HARNESS OR CONNECTOR

Scheme 9

1. CHECK SEAT BELT CONTROL ECU Disconnect the S45 ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance RESISTANCE SPECIFICATION Tester Connection Condition Specified Condition S45-3 (MOL+) - S45-4 (MOL-)*1 Always Below 2 ohms S45-2 (MOR+) - S45-1 (MOR-)*2 Always Below 2 ohms HINT: *1: for LH *2: for RH NG: Go to step 2 OK: REPLACE SEAT BELT CONTROL ECU (See «REMOVAL»(ref-349756-S23803363232009120800000) )
2. CHECK HARNESS AND CONNECTOR (FRONT SEAT OUTER BELT - SEAT BELT CONTROL ECU) Disconnect the S4*1 and R2*2 belt connectors. Disconnect the S45 ECU connector. Using a service wire, connect S4-1*1 or R2-1*2 and S4-2*1 or R2-2*2 of the connector on the front seat outer belt. HINT: *1: for LH *2: for RH Measure the resistance according to the value(s) in the table below. Standard resistance RESISTANCE SPECIFICATION Tester Connection Connector Specified Condition S45-3 (MOL+) - S45-4 (MOL-)*1 Always Below 2 ohms S45-2 (MOR+) - S45-1 (MOR-)*2 Always Below 2 ohms Result RESULT CHART Result Proceed to NG A OK (B2002 is output) B OK (B2007 is output) C B: REPLACE FRONT SEAT OUTER BELT ASSEMBLY RH (See «REMOVAL»(ref-349752-S27117964692009120800000) ) C: REPLACE FRONT SEAT OUTER BELT ASSEMBLY LH (See «REMOVAL»(ref-349752-S27117964692009120800000) ) A: REPAIR OR REPLACE HARNESS OR CONNECTOR

1. CHECK FOR DTC Enter the following menus: Body Electrical/Pre-Collision 1/Trouble Code / Select "Clear" and clear the data. Recheck for DTCs. OK: DTC B2015 to B2047 are not output. NG: REPLACE SEAT BELT CONTROL ECU (See «REMOVAL»(ref-349756-S23803363232009120800000) ) OK: USE SIMULATION METHOD TO CHECK (See «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-349706-S05264741182009120800000) )

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Scheme 10

1. CHECK HARNESS AND CONNECTOR (SEAT BELT CONTROL ECU - BATTERY) Disconnect the S45 ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage VOLTAGE SPECIFICATION Tester Connection Condition Specified Condition S45-7 (+B) - S45-8 (PGND) Always 11 to 14 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: REPLACE SEAT BELT CONTROL ECU (See «REMOVAL»(ref-349756-S23803363232009120800000) )

1. CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) Enter the following menus: Chassis/ABS/VSC/TRAC/Trouble Code / Check for DTCs. Result RESULT CHART Result Proceed to Electronically controlled brake system DTC is not output A Electronically controlled brake system DTC is output B B: GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM (See «DIAGNOSTIC TROUBLE CODE CHART»(ref-349740-S37269980222009120800000) ) A: REPLACE SEAT BELT CONTROL ECU (See «REMOVAL»(ref-349756-S23803363232009120800000) )

1. CHECK CAN COMMUNICATION SYSTEM Select "Bus Check" from the "System Select" (see «DIAGNOSIS SYSTEM»(ref-349742-S42827894432009120800000) ) Select "Communication Malfunction DTC" from the "Bus Check" screen, and then select "Enter" (see «DIAGNOSIS SYSTEM»(ref-349742-S42827894432009120800000) ) Result RESULT CHART Result Proceed to CAN communication system DTC is not output A CAN communication system DTC is output B B: GO TO CAN COMMUNICATION SYSTEM (See «DIAGNOSTIC TROUBLE CODE CHART»(ref-349742-S02415032652009120800000) ) A: Go to Next Step
2. CHECK MAIN BODY ECU Enter the following menus: Body Electrical/Pre-Collision 1/Trouble Code / Select "Clear" and clear the data. Recheck for DTCs. OK: DTC B2064 is not output. NG: Go to step 3 OK: USE SIMULATION METHOD TO CHECK (See «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-349706-S05264741182009120800000) )
3. REPLACE MAIN BODY ECU Replace the main body ECU.
4. CHECK SEAT BELT CONTROL ECU Using the Techstream, enter the following menus: Body Electrical/Pre-Collision 1/Trouble Code / Select "CLEAR" and clear the data. Recheck for DTCs. OK: DTC B2064 is not output. NG: REPLACE SEAT BELT CONTROL ECU (See «REMOVAL»(ref-349756-S23803363232009120800000) ) OK: END

HINT

1. If DTC B1655 is not cleared first, DTC B2074 continues to be output.
2. If DTC B1650 is not cleared first, DTC B2075 continues to be output.

1. CHECK AIRBAG SYSTEM Enter the following menus: Body Electrical/SRS Airbag/Trouble Code / Check for DTC. Result RESULT CHART Result Proceed to DTC B1655 or B1650 is not output A DTC B1655 or B1650 is output B B: GO TO AIRBAG SYSTEM (See «DIAGNOSTIC TROUBLE CODE CHART»(ref-349738-S23226630192009120800000) ) A: REPLACE SEAT BELT CONTROL ECU (See «REMOVAL»(ref-349756-S23803363232009120800000) )

HINT

When clearing the DTCs, first clear the DTC output from the driving support ECU, and then clear the DTC output from the seat belt control ECU.

1. CHECK DRIVING SUPPORT ECU Enter the following menus: Body Electrical/Pre-Collision 2, Cruise Control/Trouble Code. Check for DTCs. Result RESULT CHART Result Proceed to "Pre-Collision 2" or "Cruise Control" DTC is not output A "Pre-Collision 2" or "Cruise Control" DTC is output B B: GO TO RELEVANT FLOWCHART A: Go to Next Step
2. CHECK SEAT BELT CONTROL ECU Enter the following menus: Body Electrical/Pre-Collision 1/Trouble Code / Select "Clear" and clear the data. Recheck for DTCs. OK: DTC B2090 is not output. NG: REPLACE SEAT BELT CONTROL ECU (See «REMOVAL»(ref-349756-S23803363232009120800000) ) OK: USE SIMULATION METHOD TO CHECK (See «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-349706-S05264741182009120800000) )

1. CHECK FOR DTC Enter the following menus: Body Electrical/Pre-Collision 2/Trouble Code / Select "Clear" and clear the data. Recheck for DTCs. OK: DTC C1A01 is not output. NG: REPLACE DRIVING SUPPORT ECU (See «REMOVAL»(ref-349744-S28012041112009120800000) ) OK: USE SIMULATION METHOD TO CHECK (See «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-349706-S05264741182009120800000) )

Note. When the front millimeter wave radar sensor is replaced with a new one, adjustment of the radar sensor beam axis must be performed (see ADJUSTMENT ).

1. READ VALUE USING FRONT MILLIMETER WAVE RADAR SENSOR Enter the following menus: Powertrain/Radar Cruise /. The select "Data List". Read the Data List and check the country specification information of the front millimeter wave radar sensor and vehicle. Result RESULT CHART Result Proceed to Country specification information for vehicle and front millimeter wave radar sensor matches A Country specification information for vehicle and front millimeter wave radar sensor do not match (Japan<---->Europe, Japan<---->North America) B Country specification information for vehicle and front millimeter wave radar sensor do not match (North America<---->Europe) C HINT: The country specification information of the driving support ECU is decided by the combination meter. Even if the vehicle and sensor country specification information match, if the country specification information for the vehicle and ECU/meter do not match, it is necessary to replace the ECU and meter. When the country specification information (North America<---->Europe) for the vehicle body and sensor do not match, the sensor's information can be overwritten by performing the sensor's axis adjustment. B: REPLACE FRONT MILLIMETER WAVE RADAR SENSOR (See «REMOVAL»(ref-349744-S01548893102009120800000) ) C: ADJUST FRONT MILLIMETER WAVE RADAR SENSOR (See «ADJUSTMENT»(ref-349744-S24444634422009120800000) ) A: REPLACE COMBINATION METER AND DRIVING SUPPORT ECU

Note. When the front millimeter wave radar sensor is replaced with a new one, adjustment of the front sensor beam axis must be performed (see REMOVAL ).

1. REPLACE FRONT MILLIMETER WAVE RADAR SENSOR Replace the front millimeter wave radar sensor (see «REMOVAL»(ref-349744-S01548893102009120800000) ).
2. ADJUST FRONT MILLIMETER WAVE RADAR SENSOR Adjust the front millimeter wave radar sensor (see «ADJUSTMENT»(ref-349744-S24444634422009120800000) ).
3. CHECK DRIVING SUPPORT ECU Enter the following menus: Body Electrical/Pre-Collision 2/Trouble Code / Select "Clear" and clear the data. Recheck for DTC. OK: DTC C1A10 is not output. NG: REPLACE DRIVING SUPPORT ECU (See «REMOVAL»(ref-349744-S28012041112009120800000) ) OK: END

1. ADJUST FRONT MILLIMETER WAVE RADAR SENSOR Adjust the front millimeter wave radar sensor (see «ADJUSTMENT»(ref-349744-S24444634422009120800000) ).
2. CHECK DRIVING SUPPORT ECU Enter the following menus: Body Electrical/Pre-Collision 2/Trouble Code / Select "Clear" and clear the data. Recheck for DTC. OK: DTC C1A11 or C1A14 is not output. HINT: After performing the radar beam axis adjustment, if the same DTC is output again after the DTC detection conditions are met, replace the driving support ECU. NG: REPLACE DRIVING SUPPORT ECU (See «REMOVAL»(ref-349744-S28012041112009120800000) ) OK: END

1. CHECK FOR DTC (SFI SYSTEM) Enter the following menus: Powertrain/Engine/Trouble Code/ Check for DTC. OK: SFI system DTC is not output. NG: GO TO SFI SYSTEM (See «DIAGNOSTIC TROUBLE CODE CHART»(ref-349724-S01827804142009120800000) ) OK: Go to Next Step
2. CHECK FOR DTC (AUTOMATIC TRANSMISSION SYSTEM) Enter the following menus: Powertrain/ECT/Trouble Code/ Check for DTC. OK: ECT system DTC is not output. NG: GO TO AUTOMATIC TRANSMISSION SYSTEM (See «DIAGNOSTIC TROUBLE CODE CHART»(ref-349712-S31994410002009120800000) ) OK: REPLACE DRIVING SUPPORT ECU (See «REMOVAL»(ref-349744-S28012041112009120800000) )

1. CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) Enter the following menus: Chassis/ABS/VSC/TRAC/Trouble Code / Check for DTCs. OK: Electronically controlled brake system DTC is not output. NG: GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM (See «DIAGNOSTIC TROUBLE CODE CHART»(ref-349740-S37269980222009120800000) ) OK: Go to Next Step
2. CHECK FOR DTC (SFI SYSTEM) Enter the following menus: Powertrain/Engine/Trouble Code/ Check for DTCs. OK: SFI system DTC is not output. NG: GO TO SFI SYSTEM (See «DIAGNOSTIC TROUBLE CODE CHART»(ref-349724-S01827804142009120800000) ) OK: Go to Next Step
3. REPLACE ECM Replace the ECM (see «REMOVAL»(ref-349724-S01517209942009120800000) ).
4. CHECK SKID CONTROL ECU Enter the following menus: Body Electrical/Pre-Collision 2/Trouble Code / Select "Clear" and clear the data. Recheck for DTC. OK: DTC C1A41 is not output. NG: Go to step 5 OK: END
5. REPLACE SKID CONTROL ECU Replace the skid control ECU (see «REMOVAL»(ref-349740-S33717864392009120800000) ).
6. CHECK DRIVING SUPPORT ECU Enter the following menus: Body Electrical/Pre-Collision 2/Trouble Code / Select "Clear" and clear the data. Recheck for DTC. OK: DTC C1A41 is not output. NG: REPLACE DRIVING SUPPORT ECU (See «REMOVAL»(ref-349744-S28012041112009120800000) ) OK: END

1. CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) Enter the following menus: Chassis/ABS/VSC/TRAC/Trouble Code / Select "Clear" and clear the data. Recheck for DTC. OK: DTC C1234 is not output NG: GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM (See «DIAGNOSTIC TROUBLE CODE CHART»(ref-349740-S37269980222009120800000) ) OK: REPLACE DRIVING SUPPORT ECU (See «REMOVAL»(ref-349744-S28012041112009120800000) )

1. CHECK FOR DTC (ELECTRONIC CONTROLLED BRAKE SYSTEM) Enter the following menus: Chassis/ABS/VSC/TRAC/Trouble Code / Select "Clear" and clear the data. Recheck for DTC. OK: DTC C1231 is not output. NG: GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM (See «DIAGNOSTIC TROUBLE CODE CHART»(ref-349740-S37269980222009120800000) ) OK: REPLACE DRIVING SUPPORT ECU (See «REMOVAL»(ref-349744-S28012041112009120800000) )

Refer to CAN communication system (U0100, see DTC U0100 LOST COMMUNICATION WITH ECM/PCM "A" ).

Refer to CAN communication system (U0122, see DTC U0122 LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE ).

Refer to CAN communication system (U0123, see DTC U0123 LOST COMMUNICATION WITH YAW RATE SENSOR MODULE ).

Refer to CAN communication system (U0126, see DTC U0126 LOST COMMUNICATION WITH STEERING ANGLE SENSOR MODULE ).

Refer to CAN communication system (U0140, see DIAGNOSIS SYSTEM ).

Refer to CAN communication system (U0151, see DIAGNOSIS SYSTEM ).

Refer to CAN communication system (U0235, see DTC U0235 LOST COMMUNICATION WITH CRUISE CONTROL FRONT DISTANCE RANGE SENSOR ).

Refer to CAN communication system (U1104, see DTC U1104 LOST COMMUNICATION WITH DRIVING SUPPORT ECU ).

1. CHECK CAN COMMUNICATION SYSTEM Select "Communication Malfunction DTC" from the "Bus Check" screen, and then select "Enter" (see «DIAGNOSIS SYSTEM»(ref-349742-S42827894432009120800000) ) Select "Bus Check" from the "System Select" (see «DIAGNOSIS SYSTEM»(ref-349742-S42827894432009120800000) ) OK: CAN communication system DTC is not output. NG: GO TO CAN COMMUNICATION SYSTEM (See «DIAGNOSTIC TROUBLE CODE CHART»(ref-349742-S02415032652009120800000) ) OK: USE SIMULATION METHOD TO CHECK (See «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-349706-S05264741182009120800000) )

Scheme 11

Scheme 12

Scheme 13

Scheme 14

Scheme 15

Scheme 16

1. REMOVE STEERING COLUMN COVER (for Lower Side) Remove the 3 screws. Detach the 2 claws and remove the cover.
2. REMOVE STEERING COLUMN COVER (for Upper Side) Disconnect the connector. Detach the claw and 4 clips and remove the cover.
3. REMOVE DRIVER MONITOR BRACKET Remove the screw. Detach the claw and remove the bracket.
4. REMOVE DRIVER MONITOR CAMERA Remove the 3 screws. Remove the camera in the direction indicated by the arrow.

Scheme 17

1. INSTALL DRIVER MONITOR CAMERA Attach the claws to install the camera. Install the camera with the 3 screws. Torque: 1.8 N*m (18 kgf*cm, 16 in.*lbf)
2. INSTALL DRIVER MONITOR BRACKET Attach the claw to install the bracket. Install the screw. Torque: 0.9 N*m (9.0 kgf*cm, 8.0 in.*lbf)
3. INSTALL STEERING COLUMN COVER (for Upper Side) Connect the connector. Attach the claw and 4 clips to install the cover.
4. INSTALL STEERING COLUMN COVER (for Lower Side) Attach the 2 claws to install the cover. Install the 3 screws.
5. CHECK SRS WARNING LIGHT Check the SRS warning light (see «CHECK MODE PROCEDURE»(ref-349738-S28967628502009120800000) ).

Scheme 18

Scheme 19

1. REMOVE NO. 1 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY (See «REMOVAL»(ref-349746-S04541701892009120800000) )
2. REMOVE PRE-COLLISION BRAKE CANCEL SWITCH ASSEMBLY Detach the 2 claws and remove the switch.

Scheme 20

1. INSPECT PRE-COLLISION BRAKE CANCEL SWITCH ASSEMBLY Measure the resistance according to the value(s) in the table below. Standard resistance RESISTANCE SPECIFICATION Tester Connection Switch Condition Specified Condition 1 (GND) - 2 (ECU) Switch ON Below 1 ohms 1 (GND) - 2 (ECU) Switch OFF 10 kohms or higher If the result is not as specified, replace the switch assembly.