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UZZ32 Active Computer Diagnostics

June 2003

by Richard Ashcroft

Hi all Active owners,

just wanted to update all on my suspension saga.

But first, I just wanted to encourage everyone to share info on these cars. I've just spent 2 months trying to figure out my issue and gave a crap load of money to someone to try and fix it. Although I'm not mechanically minded, I'd sure like to give anyone a hand to save them going through what I have over the last couple of months.

With my problem, we installed an alarm and the active error came up. Ran diagnostics and SUS 11 came up. A guy from Japan told me it was left front sensor. Pulled that out, looked at all fuses, visual inspection of wiring, even swapped the height relay with Peter Scott's car, (which by the way is the main relay switch on the cooling fan apparently) and could not find anything.....

Then, I gave it to an electrician (OG Electrical) -The active suspension computer has a number output and input pins. Each of these pins should register a specific voltage range both for output and input signals. Where there is a variance, the manual will tell you where to look. In my case, there was no signal coming back from the left front height sensor or lateral G sensor. The electrician then traced the wiring from the computer to the height sensor and under the passenger kick panel discovered a plug had been disconnected (this is where the alarm installer jacked into the fuel pump loom and must have knocked the plug.)

Now my active does the 'active dance' and handles like it should.

It cost me 500 bucks to learn the above but now I have some info on what the input/output pins should be reading and I'm more than happy to share. I'll have to scan the papers but I'm happy to post them to anyone having problems.

The tables below are also available in easy to print Adobe Acrobat file (pdf). activecomputer.pdf (90kb)

 

 

UZZ32 - HYDROPNEUMATIC SUSPENSION COMPUTER

Connector A

Connector B

Connector C

 

Connector D

 

Lateral G Check Connectors, before and after

Connector A (White)

Connector B (Grey)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Connector Pin No Pin Code Input/Output Item Measured Tester contacts

+ -

Measurement Conditions Standard Value Location of Problem if value not in standard range
A 1 TC In Voltage A1 C7 Ignition ON, and diagnosis connector or TDCL pins Tc-E1 shorted 1V or less Diagnosis Connector
Ignition ON, and diagnosis connector or TDCL pins Tc-E1 open 8 – 14V TDCL
2 ES -1 In Continuity A2 C7 Ordinary Conditions Continuity G Sensor shielding wire before and after
3 TOIL In Voltage A3 C7 Idling 0.5 – 4.5V Oil temperature sensor
4 PRL In Voltage A25
A3 Or
A26
Idling 0.6 – 4.5V Rear (LH) pressure sensor
5 GLG In Voltage A5 A24 Ignition ON 0.5 – 4.5V Horizontal? G Sensor, before and after
6 HFL In Voltage A25
A6 or
A26
Ignition ON 0.5 – 4.5V Front (LH) height control sensor
7 HRL In Voltage A25
A7 or
A26
Ignition ON 0.5 – 4.5V Rear (LH) height control sensor

 

Connector Pin No Pin Code Input/Output Item Measured Tester contacts

+ -

Measurement Conditions Standard Value Location of Problem if value not in standard range
A 8 SGFL In Voltage A25
A8 or
A26
Ignition ON 0.5 – 4.5V Front (LH) upper and lower G sensor
9 SGRL In Voltage A25
A9 or
A26
Ignition ON 0.5 – 4.5V Rear (LH) upper and lower G sensor
10 PACC In Voltage A25
A10 or
A26
Idling 0.5 – 4.5V Accumulator pressure sensor
11 VG5 Out Voltage A11 A24 Idling 4.7 – 5.3V Computer
12 VL5 Out Voltage A25
A12 or
A26
Idling 4.7 – 5.3V Computer
13 VR5 Out Voltage A25
A13 or
A26
Idling 4.7 – 5.3V Computer
14 TS In Voltage A14 C7 Ignition ON, and diagnosis connector or TDCL pins Ts – E1 shorted 1V or less Diagnosis connector
Ignition ON, and diagnosis connector or TDCL pins Ts – E1 Open 8 – 14V TDCL connector

 

Connector Pin No Pin Code Input/Output Item Measured Tester contacts

+ -

Measurement Conditions Standard Value Location of Problem if value not in standard range
A 15 ES2 In Continuity A15 C7 Ordinary Conditions Continuity Lateral (Transverse?) G sensor shielding wire
16 TD In Voltage A16 C7 Ignition ON, and TDCL pins Td -
E1 shorted
1v or less TDCL Connector
Ignition ON, and TDCL pins Td – E1 open 8 – 14v
17 PRR In Voltage A17 A26 Idling 0.5 – 4.5v Rear (RH) Pressure Sensor
18 GLT In Voltage A18 A24 Ignition ON 0.5 – 4.5v Lateral G sensor, before and after
19 HFR In Voltage A25
A19 or

A26

Ignition ON 0.5 – 4.5v Front (RH) height control sensor
20 HRR In Voltage A25
A20 or

A26

Ignition ON 0.5 – 4.5v Rear (RH) height control sensor
22 SGRR In Voltage A25
A22 or

A26

Ignition ON 0.5 – 4.5v Rear (RH) upper and lower G sensor

 

Connector Pin No Pin Code Input/Output Item Measured Tester contacts

+ -

Measurement Conditions Standard Value Location of Problem if value not in standard range
A 24 EG In Continuity A24 C7 Ordinary Conditions Continuity Computer
25 EL A25 C7
26 ER A26 C7
 
B 1 SS1 In Voltage B1 C7 Ignition ON, and turning steering wheel slowly Changes between 1v or less and 5v or more Steering Sensor
5 4WSF In Voltage B5 C7 Ignition ON 8 – 14v 4WS computer
6 Voltage B6 C7 Ignition ON 8 – 14v ABS computer
7 Voltage B7 C7 Ignition ON 8 – 14v Oil level sensor
8     Voltage B8 C7 Ignition ON, and suspension control switch at NORM position 8 – 14v Suspension control switch
9 Voltage B9 C7 Ignition ON and turning steering wheel slowly Changes between 1v or less and 5v or more Steering Sensor
10     Voltage B10 C7 Ignition ON, and travelling slowly Changes between 1v or less and 5v or more Speed Sensor

 

Connector Pin No Pin Code Input/Output Item Measured Tester contacts

+ -

Measurement Conditions Standard Value Location of Problem if value not in standard range
B 12 STP In Voltage B12 C7 Ignition ON, and brake switch ON 10 – 14v Stop light switch
14 AFFSW In Voltage B14 C7 Ignition ON, and suspension control switch ON 10 – 14v Suspension Control Switch
16 ICL In Voltage B16 C7 Idling 8v or more IC regulator
 
C 1 +B In Voltage C1 C7 Ignition ON 10 – 14v HPS fuse
2 GLG + In Voltage C2 C7 Ignition ON, and Connector b GLG + to EG pin is OPEN 5v or more Lateral G sensor before and after
Ignition ON, and Connector b GLG + to EG pin is SHORTED 1v or less
3 GLT + In Voltage C3 C7 Ignition ON, and Connector a GLT+ to EG pin is open 5v or more Lateral G sensor before and after
Ignition ON, and Connector a GLT+ to EG pin is shorted 1v or less

 

Connector Pin No Pin Code Input/Output Item Measured Tester contacts

+ -

Measurement Conditions Standard Value Location of Problem if value not in standard range
C 4 ES4 In Continuity C4 C7 Ordinary Conditions Continuity Computer
5 ES3 C5 C7
7 GND Out Continuity C7 Body earth Ordinary Conditions Continuity Computer

Body Earth

8 GLG In Voltage C8 C7 Ignition ON, and Connector a GLG – to EG pin open 5v or more Lateral G sensor before and after
Ignition ON, and Connector a GLG – to EG pin shorted 1v or less
9 GLG In Voltage C9 C7 Ignition ON, and Connector a GLT – to EG pin open 5v or more Lateral G sensor before and after
Ignition ON, and Connector a GLT – to EG pin shorted 1v or less
10 ES5 In Continuity C10 C7 Ordinary conditions Continuity Computer
12 PN In Voltage C21 C7 Ignition ON, and shift lever in P or N range 10 – 14v Neutral start switch

 

Connector

Pin No Pin Code Input/Output Item Measured Tester contacts

+ -

Measurement Conditions Standard Value Location of Problem if value not in standard range
D 1 +B In Voltage D1 C7 Ignition ON 10 – 14v HPS fuse
2 BAT In Voltage D2 C7 Ordinary Conditions 8-14v ECU-B fuse
3 HPSF Out Voltage D3 C7 Ignition ON 9 – 14v Computer
4 ACTV HIGH Out Voltage D4 C7 Idling, and suspension control switch on HIGH 10 – 14v Combination meter
5 ACTV SUS Out Voltage D5 C7 Idling 1v or less Combination meter
6 ACTV OFF Out Voltage D6 C7 Ignition ON, and suspension control switch OFF 1v or less Combination meter
7 SFL+ Out Voltage D7 C7 In idling stage, put shift lever into position other than P or the N range and/to achieve controlled stage, put shift lever in P or N range 0.36 – 7.7v The various absorber control solenoid valves
8 SFR+ D8 C7
9 SRL+ D9 C7
10 SRR+ D10 C7
11 SBYP+ Out Voltage D11 C7 In idling stage, put shift lever into position other than P or the N range and/to achieve controlled stage, put shift lever in P or N range 0.36 – 7.7v Suspension control solenoid valve

Connector

Pin No Pin Code Input/Output Item Measured Tester contacts

+ -

Measurement Conditions Standard Value Location of Problem if value not in standard range
D 12 GND Out Continuity D12 Body Earth Ordinary Conditions Continuity
  • Computer
  • Body earth
13 IG In Voltage D13 C7 Ignition ON 10 – 14v ECU-IG Fuse
18 TEM In Voltage D18 C7 Ignition ON 1v or less Diagnosis connector
19 CRY Out Voltage D19 C7 Ignition ON, and suspension fluid at 70C or more 10 – 14v - Oil temperature sensor

- Computer

Ignition ON, and suspension fluid at 60C or less 1v or less
20 RLY Out Voltage D20 C7 Ignition ON 10 – 14v Computer
21 SFL Out Voltage D21 Body earth Ordinary Conditions 0 – 0.5v - Computer

- Body earth

22 SFR D22 Body earth
23 SRL D23 Body earth
24 SRR D24 Body earth
25 SBYP D25 Body earth

 

 

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