UZZ32 - HYDRONEUMATIC SUSPENSION COMPUTER
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1 UZZ32 - HYDRONEUMATIC SUSPENSION COMPUTER A B C D Lateral G Check s, before and after A (White) B (Grey) Voltage Input and Ou Range for Active Suspension Computer - Prepared by Richard J Ashcroft for Australian Lexus Soarer Club and Planet Soarer
2 A Code Input/O u 1 TC In Voltage A1ÙC7 diagnosis connector or TDCL pins Tc-E1 shorted diagnosis connector or TDCL pins Tc-E1 open 2 ES -1 In Continuity A2ÙC7 Ordinary 1V or less 8 14V TDCL Continuity Location of Problem if value not in standard Diagnosis G Sensor shielding wire before and after 3 TOIL In Voltage A3ÙC7 Idling V Oil temperature 4 PRL In Voltage A25 A3Ù Or Idling V Rear (LH) pressure 5 GLG In Voltage A5ÙA24 Ignition ON V Horizontal? G Sensor, before and after 6 HFL In Voltage A25 A6Ù or 7 HRL In Voltage A25 A7Ù or Ignition ON V Front (LH) height control Ignition ON V Rear (LH) height control
3 A Code Input/ Outpu t 8 SGFL In Voltage A25 A8Ù or 9 SGRL In Voltage A25 A9 Ù or 10 PACC In Voltage A25 A10 Ù or Location of Problem if value not in standard Ignition ON V Front (LH) upper and lower G Ignition ON V Rear (LH) upper and lower G Idling V Accumulator pressure 11 VG5 Out Voltage A11 Ù A24 Idling V Computer 12 VL5 Out Voltage A25 A12 Ù or 13 VR5 Out Voltage A25 A13 Ù or 14 TS In Voltage A14 Ù C7 Idling V Computer Idling V Computer diagnosis connector or TDCL pins Ts E1 shorted diagnosis connector or TDCL pins Ts E1 Open 1V or less Diagnosis connector 8 14V TDCL connector
4 Code Location of Problem if value not in standard A 15 ES2 In Continuity A15 Ù C7 Ordinary Continuity Lateral (Transverse?) G shielding wire 16 TD In Voltage A16 Ù C7 TDCL pins Td - E1 shorted TDCL pins Td E1 open 8 14v TDCL 17 PRR In Voltage A17 Ù Idling v Rear (RH) Pressure Sensor 18 GLT In Voltage A18 Ù A24 Ignition ON v Lateral G, before and after 19 HFR In Voltage A25 A19 Ù or 20 HRR In Voltage A25 A20 Ù or 22 SGRR In Voltage A25 A22 Ù or Ignition ON v Front (RH) height control Ignition ON v Rear (RH) height control Ignition ON v Rear (RH) upper and lower G
5 Code Location of Problem if value not in standard A 24 EG A24 Ù C7 25 EL In Continuity A25 Ù C7 26 ER Ù C7 Ordinary Continuity Computer B 1 SS1 In Voltage B1 Ù C7 turning steering wheel slowly Changes between 1v or less and 5v or more Steering Sensor 5 4WSF In Voltage B5 Ù C7 Ignition ON 8 14v 4WS computer 6 Voltage B6 Ù C7 Ignition ON 8 14v ABS computer 7 Voltage B7 Ù C7 Ignition ON 8 14v Oil level 8 Voltage B8 Ù C7 suspension control switch at NORM position 9 Voltage B9 Ù C7 Ignition ON and turning steering wheel slowly 8 14v Suspension control switch Changes between 1v or less and 5v or more Steering Sensor 10 Voltage B10 Ù C7 travelling slowly Changes between 1v or less and 5v or more Speed Sensor
6 Code Location of Problem if value not in standard B 12 STP B12 Ù In Voltage C7 14 AFFSW In Voltage B14 Ù C7 16 ICL In Voltage B16 Ù C7 brake switch ON suspension control switch ON Idling 10 14v Stop light switch 10 14v 8v or more Suspension Control Switch IC regulator C 1 +B In Voltage C1 Ù C7 Ignition ON 10 14v HPS fuse 2 GLG + In Voltage C2 Ù C7 b GLG + to EG pin is OPEN b GLG + to EG pin is SHORTED 5v or more Lateral G before and after 3 GLT + In Voltage C3 Ù C7 a GLT+ to EG pin is open a GLT+ to EG pin is shorted 5v or more Lateral G before and after
7 C Code 4 ES4 C4Ù C7 In Continuity 5 ES3 C5 Ù C7 7 GND Out Continuity C7 Ù Body 8 GLG In Voltage C8 Ù C7 9 GLG In Voltage C9 Ù C7 Ordinary Continuity Computer Location of Problem if value not in standard Ordinary Continuity Computer Body Earth a GLG to 5v or more EG pin open Lateral G before and after a GLG to EG pin shorted a GLT to EG pin open a GLT to EG pin shorted 5v or more 10 ES5 In Continuity C10 Ù C7 Ordinary conditions Continuity Computer 12 PN In Voltage C21 Ù C7 shift lever in P or N 10 14v Lateral G before and after Neutral start switch
8 D Code 1 +B In Voltage D1 Ù C7 Ignition ON 10 14v HPS fuse 2 BAT In Voltage D2 Ù C7 Ordinary 8-14v ECU-B fuse 3 HPSF Out Voltage D3 Ù C7 Ignition ON 9 14v Computer 4 ACTV HIGH 5 ACTV SUS 6 ACTV OFF Out Voltage D4 Ù C7 Idling, and suspension control switch on HIGH 10 14v Out Voltage D5 Ù C7 Idling Out Voltage D6 Ù C7 suspension control switch OFF 7 SFL+ Out Voltage D7 Ù C7 8 SFR+ D8 Ù C7 9 SRL+ D9 Ù C7 10 SRR+ D10 Ù C7 In idling stage, put shift lever into position other than P or the N and/to achieve controlled stage, put shift lever in P or N v Location of Problem if value not in standard Combination meter Combination meter Combination meter The various absorber control solenoid valves 11 SBYP+ Out Voltage D11 Ù C7 In idling stage, put shift lever into position other than P or the N and/to achieve controlled stage, put shift lever in P or N v Suspension control solenoid valve Code Location of Problem if value not in standard
9 D 12 GND Out Continuity D12 Ù Body Earth Ordinary Continuity Computer Body 13 IG In Voltage D13 Ù C7 Ignition ON 10 14v ECU-IG Fuse 18 TEM In Voltage D18 Ù C7 Ignition ON Diagnosis connector 19 CRY Out Voltage D19 Ù C7 suspension fluid at 70C or more 10 14v suspension fluid at 60C or less 20 RLY Out Voltage D20 Ù C7 Ignition ON 10 14v Computer 21 SFL Out Voltage D21 Ù Body 22 SFR D22 Ù Body 23 SRL D23 Ù Body 24 SRR D24 Ù Body 25 SBYP D25 Ù Body - Oil temperature - Computer Ordinary 0 0.5v - Computer - Body
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