Service Manual
Contents
1. condition the key SW is turned or the IG SW is turned ON after the ECU power reset is released 2 3 2 TRANSPONDER COMMUNICATION FINISHING CONDITION 1 When any of the following conditions is satisfied the transponder communication Key ID code veri fication is finished 1 The key SW is OFF as well as the IG SW is at LOCK or ACC position 2 Three seconds has passed after the key SW is turned from OFF gt ON Three seconds has passed after the IG SW is turned from OFF ON Three seconds has passed after the key SW is turned ON and the IG SW is turned from OFF gt ON 5 The ID code registered in the immobilizer ECU matches the ID code memorized in the key 6 After an ID code not registered in the immobilizer ECU has been received three times and the key ID has been read properly 2 4 EFIECU COMMUNICATION CONTROL 2 4 1 EFIECU COMMUNICATION STARTING CONDITION 1 When the immobilizer system has been released and the IG SW is set to LOCK or set from ACC gt ON the immobilizer ECU communicates with the EFI ECU 2 4 2 EFIECU COMMUNICATION FINISHING CONDITION 1 If any of the following conditions is met the immobilizer ECU will inhibit communication with the EFI ECU 1 During communicating with the EFI ECU the IG SW is changed from LOCK or ACC position 2 Immobilizer system SET status 3 Communication with the EFI ECU is complete 2 5 DIAGNOSIS 2 5 1 DESCRIPTION 1 The diagnosis2. cylinder and turned in the LOCK direction 2 When any of the following conditions are satisfied all the other door locks will be set to UNLOCK 1 When the driver s seat door lock lever is switched from the LOCK position to the UNLOCK position 2 When the key is inserted into the driver s seat key cylinder and turned in the UNLOCK direc tion 3 COMPONENTS 3 1 DOOR CONTROL RELAY 1 The door control relay controls the LOCK and UNLOCK functions of all doors except the driver s seat door J12B1554T10 14 5 IMMOBILIZER SYSTEM 1 OUTLINE 1 1 DESCRIPTION 1 The immobilizer system is provided on some specifications 2 The immobilizer system prohibits the unauthorized start of the engine thus enhancing the security 3 It becomes possible to start the engine when the ID code registered in the immobilizer ECU is matched with the ID code memorized in the key 4 When the immobilizer system is in the operating condition the indicator lamp in the instrument panel flashes 1 2 NOTES ON IMMOBILIZER SYSTEM 1 In the case of the IG key for the immobilizer equipped vehicles there are cases where correct communication with the immobilizer ECU is impossible thus not allowing the engine to start 1 When the grip section of the key is in contact with a metal object 2 When the key is close to or in contact with the key Which incorporates a signal transmitter for the immobilizer system of another vehicle 2 Do not put
3. means Trouble diagnosis In cases where an abnormality exists in the input output system the computer inside the sensor unit informs the check operator of the abnormal items 2 For the details of the diagnosis refer to the repair manual SIC 14 11 3 COMPONENTS 3 1 IG KEY 1 A transponder Chip is incorporated in the grip section of the IG key Upon receiving the magnetic field gener ated by the immobilizer coil this chip sends the ID code Moreover the ID code differs depending on the IG key 3 2 IMMOBILIZER ECU Transponder m T11B1507ET16 1 The immobilizer coil is energized and the transponder communication is performed Furthermore the collation of ID codes is carried out with the EFI ECU 2 It is possible to register up to four keys Even when the battery is disconnected the memory of ID codes of the registered key will not be lost 3 3 IMMOBILIZER COIL 1 When electric current flows into the immobilizer coil due to the immobilizer ECU control a magnetic field is gen erated and the ID code is received from the key 3 4 EFIECU Immobilizer coil L31B2529ET16 1 The ID code is collated by the signal from the immobilizer ECU thus controlling the injection of fuel 3 5 INDICATOR LAMP 1 When the immobilizer system is in the operating condition the indicator lamp in the instrument panel flashes
4. the IG key in ultrasonic cleaners etc 1 3 SYSTEM DRAWING Communication Communication 4 gt 4 gt gt Transponder built in ke Immobilizer computer Engine control computer p y L21B3001ES16 14 6 1 4 SYSTEM WIRING DIAGRAM Fuse block IG SW ECU IG2 Engine control computer Key DLC switch 2 8 B KSW T SIO IG SIO2 Immobilizer ECU GND COIL COIL IND D 43 65 Twist lead Immobilizer coil Security indicator lamp im P21B5500ES25 Immobilizer ECU connector terminal arrangement diagram T11B8502S16 14 7 Immobilizer ECU terminal name Terminal No Terminal code Terminal name 1 B ECU power supply 2 IG IG SW power supply 3 KSW Key SW 4 5 a 6 COIL Transponder communication T GND Earth 8 SIO2 Immobilizer communication 9 SIO Diagnostic tester communication 10 T Diagnostic tester communication 11 12 13 COIL Transponder communication 14 IND Security indicator 14 8 1 5 LOCATION OF COMPONENTS P21B5503ES38 The illustration shows a typical example a mmobilizer ECU b Steering column upper W SW bracket G EFI ECU d Transponder 14 9 2 CONTROL 2 1 BR
5. 14 DOOR LOCK amp THEFT DETERRENT POWER DOOR LOCK SYSTEM 14 1 14 1 DESCRIPTION 4 1 SYSTEM WIRING DIAGRAM 14 1 LOCATION OF COMPONENTS 4 3 CONTROL 4 4 POWER DOOR LOCK CONTROL IN TERLOCKING WITH DRIVER S SEAT DOOR LOCK steenen aterdenetepaadenale 4 4 COMPONENTS zaetessvenendenseeatstesn 4 4 DOOR CONTROL RELAY 4 4 IMMOBILIZER SYSTEM 14 5 ceased 14 5 DESORIPTON sores enenennenenenns sang 4 5 NOTES ON IMMOBILIZER SYSTEM 14 5 SYSTEM DRAWING 14 5 SYSTEM WIRING DIAGRAM 4 6 LOCATION OF COMPONENTS 4 8 CONTR L nee neen 4 9 BRIEF DESCRIPTION OF OPERATION S 4 9 IMMOBILIZER SYSTEM CONTROL 14 9 TRANSPONDER COMMUNICATION CONTROL swaetaasprandenstesn 14 10 EFI ECU COMMUNICATION CONTROL 14 10 DIAGNOSIS erino 14 10 COMPONENTS 4 11 SNE EREM E A 4 11 IMMOBILIZER ECU 14 11 IMMOBILIZER COIL 14 11 E A 74 14 11 INDICATOR LAMP 4 11 14 1 POWER DOOR LOCK SYSTEM 1 OUTLINE 1 1 DESCRIPTION 1 A power door lock has been provided for all vehicles The front passenger seat door the right and left rear doors and the back door luggage compartment door can be locked and unlocked by means of t
6. IEF DESCRIPTION OF OPERATION 1 The key SW is turned ON when the key is inserted into the IG key cylinder 2 The immobilizer ECU energizes the immobilizer coil As a result a magnetic field is generated in the coil 3 When the transponder Chip incorporated in the key receives the magnetic field of the coil the ID code memorized in the chip is transmitted 4 The ID code is received by the immobilizer coil and sent to the immobilizer ECU 5 The immobilizer ECU performs the collation of the transmitted ID code and the registered ID code When the codes are matched the communication with the EFI ECU is permitted UNSET condi tion In cases where the collation of the codes is not performed correctly the communication with the EFl ECU remains prohibited SET condition Therefore even if the IG SW is turned ON the communication with the EFl ECU will not be started 6 When the IG SW is turned ON by turning the IG knob the collation of the code with the EFI ECU is carried out 7 If the collation of the codes is correct the engine is started by turning the IG knob to the START position Key insertion switch ON Immobilizer ECU Transponder communication control Energizing of the immobilizer coil and generation of magnetic fields Receiving of key magnetic field Sending of key ID code Immobilizer coil Receiving the ID code Immobilizer coil Sending the ID code Im
7. he driver s seat key cylinder operation 1 2 SYSTEM WIRING DIAGRAM CN IG1 D L 3 CK RS OXN From battery 4 ULSW Driver seat door ock control SW LOK Front door lock RH o Rear door lock Ay RH pa Rear door lock Ay LH l Lo Back door lock Ay U L nn Door control relay P21B1546ES40 Door lock connector terminal arrangement diagram U L LOK LOK U L Ge B ULSW E Back door lock motor Door lock control relay Front RH door lock motor Rear LH door lock motor Front RH door lock motor E ULSW Driver s seat door control switch P21B5770ES16 14 3 1 3 LOCATION OF COMPONENTS P21B1548ES40 The illustration shows a typical example Door lock control relay Front door lock Ay Rear door lock Ay Back door lock 14 4 2 CONTROL 2 1 POWER DOOR LOCK CONTROL INTERLOCKING WITH DRIVER S SEAT DOOR LOCK 1 When any of the following conditions are satisfied all the other door locks will be set to LOCK 1 When the driver s seat door lock lever is switched from the UNLOCK position to the LOCK position 2 When the key is inserted into the driver s seat key
8. mobilizer ECU Collation of the ID codes Operation of the ignition knob The engine starts EFI computer communication with immobilizer ECU 2 2 IMMOBILIZER SYSTEM CONTROL 2 2 1 IMMOBILIZER SYSTEM OPERATING CONDITION 1 When the following conditions are satisfied the immobilizer system is set to the operating condition Communication with the EFI ECU prohibited 1 The key SW is OFF as well as the IG SW is at LOCK or ACC position 2 Thirty seconds have passed after the key SW is ON and the IG SW is changed from LOCK or ACC position 2 2 2 IMMOBILIZER SYSTEM RELEASED CONDITION 1 When the following conditions are satisfied the immobilizer system is set to the released condition Communication with the EFl ECU allowed 1 When the ID code stored in the key and the ID code stored in the immobilizer ECU match T11E1511ES20 14 10 2 3 TRANSPONDER COMMUNICATION CONTROL 2 3 1 TRANSPONDER COMMUNICATION STARTING CONDITION 1 If any of the following conditions is met the transponder communication Check of the ID code of the key starts 1 In the immobilizer system SET condition the key SW is OFF ON 2 In the immobilizer system SET condition the IG SW is changed from LOCK or ACC position gt ON 3 In the immobilizer system SET condition the key SW is ON and the IG SW is changed from ON gt LOCK or ACC position 4 In the immobilizer system SET
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