UZZ32 Active Computer Diagnostics

June 2003

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 + ó -	Measurement Conditions	Standard Value	Location of Problem if value not in standard range
A	1	TC	In	Voltage	A1ó C7	Ignition ON, and diagnosis connector or TDCL pins Tc-E1 shorted	1V or less	Diagnosis Connector
	1	TC	In	Voltage	A1ó C7	Ignition ON, and diagnosis connector or TDCL pins Tc-E1 open	8 – 14V	TDCL
	2	ES -1	In	Continuity	A2ó C7	Ordinary Conditions	Continuity	G Sensor shielding wire before and after
	3	TOIL	In	Voltage	A3ó C7	Idling	0.5 – 4.5V	Oil temperature sensor
	4	PRL	In	Voltage	A25 A3ó Or A26	Idling	0.6 – 4.5V	Rear (LH) pressure sensor
	5	GLG	In	Voltage	A5ó A24	Ignition ON	0.5 – 4.5V	Horizontal? G Sensor, before and after
	6	HFL	In	Voltage	A25 A6ó or A26	Ignition ON	0.5 – 4.5V	Front (LH) height control sensor
	7	HRL	In	Voltage	A25 A7ó or A26	Ignition ON	0.5 – 4.5V	Rear (LH) height control sensor

Connector	Pin No	Pin Code	Input/Output	Item Measured	Tester contacts + ó -	Measurement Conditions	Standard Value	Location of Problem if value not in standard range
A	8	SGFL	In	Voltage	A25 A8ó or A26	Ignition ON	0.5 – 4.5V	Front (LH) upper and lower G sensor
	9	SGRL	In	Voltage	A25 A9 ó or A26	Ignition ON	0.5 – 4.5V	Rear (LH) upper and lower G sensor
	10	PACC	In	Voltage	A25 A10 ó or A26	Idling	0.5 – 4.5V	Accumulator pressure sensor
	11	VG5	Out	Voltage	A11 ó A24	Idling	4.7 – 5.3V	Computer
	12	VL5	Out	Voltage	A25 A12 ó or A26	Idling	4.7 – 5.3V	Computer
	13	VR5	Out	Voltage	A25 A13 ó or A26	Idling	4.7 – 5.3V	Computer
	14	TS	In	Voltage	A14 ó C7	Ignition ON, and diagnosis connector or TDCL pins Ts – E1 shorted	1V or less	Diagnosis connector
	14	TS	In	Voltage	A14 ó C7	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 + ó -	Measurement Conditions	Standard Value	Location of Problem if value not in standard range
A	15	ES2	In	Continuity	A15 ó C7	Ordinary Conditions	Continuity	Lateral (Transverse?) G sensor shielding wire
	16	TD	In	Voltage	A16 ó C7	Ignition ON, and TDCL pins Td - E1 shorted	1v or less	TDCL Connector
	16	TD	In	Voltage	A16 ó C7	Ignition ON, and TDCL pins Td – E1 open	8 – 14v	TDCL Connector
	17	PRR	In	Voltage	A17 ó A26	Idling	0.5 – 4.5v	Rear (RH) Pressure Sensor
	18	GLT	In	Voltage	A18 ó A24	Ignition ON	0.5 – 4.5v	Lateral G sensor, before and after
	19	HFR	In	Voltage	A25 A19 ó or A26	Ignition ON	0.5 – 4.5v	Front (RH) height control sensor
	20	HRR	In	Voltage	A25 A20 ó or A26	Ignition ON	0.5 – 4.5v	Rear (RH) height control sensor
	22	SGRR	In	Voltage	A25 A22 ó 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 + ó -	Measurement Conditions	Standard Value	Location of Problem if value not in standard range
A	24	EG	In	Continuity	A24 ó C7	Ordinary Conditions	Continuity	Computer
	25	EL			A25 ó C7
	26	ER			A26 ó C7

B	1	SS1	In	Voltage	B1 ó C7	Ignition ON, and turning steering wheel slowly	Changes between 1v or less and 5v or more	Steering Sensor
	5	4WSF	In	Voltage	B5 ó C7	Ignition ON	8 – 14v	4WS computer
	6			Voltage	B6 ó C7	Ignition ON	8 – 14v	ABS computer
	7			Voltage	B7 ó C7	Ignition ON	8 – 14v	Oil level sensor
	8			Voltage	B8 ó C7	Ignition ON, and suspension control switch at NORM position	8 – 14v	Suspension control switch
	9			Voltage	B9 ó C7	Ignition ON and turning steering wheel slowly	Changes between 1v or less and 5v or more	Steering Sensor
	10			Voltage	B10 ó 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 + ó -	Measurement Conditions	Standard Value	Location of Problem if value not in standard range
B	12	STP	In	Voltage	B12 ó C7	Ignition ON, and brake switch ON	10 – 14v	Stop light switch
	14	AFFSW	In	Voltage	B14 ó C7	Ignition ON, and suspension control switch ON	10 – 14v	Suspension Control Switch
	16	ICL	In	Voltage	B16 ó C7	Idling	8v or more	IC regulator

C	1	+B	In	Voltage	C1 ó C7	Ignition ON	10 – 14v	HPS fuse
	2	GLG +	In	Voltage	C2 ó C7	Ignition ON, and Connector b GLG + to EG pin is OPEN	5v or more	Lateral G sensor before and after
	2	GLG +	In	Voltage	C2 ó C7	Ignition ON, and Connector b GLG + to EG pin is SHORTED	1v or less	Lateral G sensor before and after
	3	GLT +	In	Voltage	C3 ó C7	Ignition ON, and Connector a GLT+ to EG pin is open	5v or more	Lateral G sensor before and after
	3	GLT +	In	Voltage	C3 ó C7	Ignition ON, and Connector a GLT+ to EG pin is shorted	1v or less	Lateral G sensor before and after

Connector	Pin No	Pin Code	Input/Output	Item Measured	Tester contacts + ó -	Measurement Conditions	Standard Value	Location of Problem if value not in standard range
C	4	ES4	In	Continuity	C4ó C7	Ordinary Conditions	Continuity	Computer
	5	ES3	In	Continuity	C5 ó C7	Ordinary Conditions	Continuity	Computer
	7	GND	Out	Continuity	C7 ó Body earth	Ordinary Conditions	Continuity	Computer Body Earth
	8	GLG	In	Voltage	C8 ó C7	Ignition ON, and Connector a GLG – to EG pin open	5v or more	Lateral G sensor before and after
	8	GLG	In	Voltage	C8 ó C7	Ignition ON, and Connector a GLG – to EG pin shorted	1v or less	Lateral G sensor before and after
	9	GLG	In	Voltage	C9 ó C7	Ignition ON, and Connector a GLT – to EG pin open	5v or more	Lateral G sensor before and after
	9	GLG	In	Voltage	C9 ó C7	Ignition ON, and Connector a GLT – to EG pin shorted	1v or less	Lateral G sensor before and after
	10	ES5	In	Continuity	C10 ó C7	Ordinary conditions	Continuity	Computer
	12	PN	In	Voltage	C21 ó 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 + ó -	Measurement Conditions	Standard Value	Location of Problem if value not in standard range
D	1	+B	In	Voltage	D1 ó C7	Ignition ON	10 – 14v	HPS fuse
	2	BAT	In	Voltage	D2 ó C7	Ordinary Conditions	8-14v	ECU-B fuse
	3	HPSF	Out	Voltage	D3 ó C7	Ignition ON	9 – 14v	Computer
	4	ACTV HIGH	Out	Voltage	D4 ó C7	Idling, and suspension control switch on HIGH	10 – 14v	Combination meter
	5	ACTV SUS	Out	Voltage	D5 ó C7	Idling	1v or less	Combination meter
	6	ACTV OFF	Out	Voltage	D6 ó C7	Ignition ON, and suspension control switch OFF	1v or less	Combination meter
	7	SFL+	Out	Voltage	D7 ó 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 ó C7
	9	SRL+			D9 ó C7
	10	SRR+			D10 ó C7
	11	SBYP+	Out	Voltage	D11 ó 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 + ó -	Measurement Conditions	Standard Value	Location of Problem if value not in standard range
D	12	GND	Out	Continuity	D12 ó Body Earth	Ordinary Conditions	Continuity	Computer Body earth
	13	IG	In	Voltage	D13 ó C7	Ignition ON	10 – 14v	ECU-IG Fuse
	18	TEM	In	Voltage	D18 ó C7	Ignition ON	1v or less	Diagnosis connector
	19	CRY	Out	Voltage	D19 ó C7	Ignition ON, and suspension fluid at 70C or more	10 – 14v	- Oil temperature sensor - Computer
	19	CRY	Out	Voltage	D19 ó C7	Ignition ON, and suspension fluid at 60C or less	1v or less	- Oil temperature sensor - Computer
	20	RLY	Out	Voltage	D20 ó C7	Ignition ON	10 – 14v	Computer
	21	SFL	Out	Voltage	D21 ó Body earth	Ordinary Conditions	0 – 0.5v	- Computer - Body earth
	22	SFR			D22 ó Body earth
	23	SRL			D23 ó Body earth
	24	SRR			D24 ó Body earth
	25	SBYP			D25 ó Body earth

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