1999 BMW Z3M COUPE Electrical Troubleshooting Manual



COMPONENT LOCATION CHART









COMP.8500.0 7100.0LOCATION DESCRIPTION
Y2 . . . . AIR CONDITIONING COMPRESSOR . . . . front RH side of engine compartment

Y4z . . .
WATER VALVE . . . . . . . . . . . . . . . . . . . . . . . .
rear LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14-3

Y5 . . . . DRIVER’S SIDE MIRROR . . . . . . . . . . . . . . . in upper LH front door
Y6 . . . . PASSENGER’S SIDE MIRROR . . . . . . . . . . in upper RH front door
Y19 . . SHIFT–LOCK . . . . . . . . . . . . . . . . . . . . . . . . . . center console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27-2
Y6101 CYL. 1 FUEL INJECTION VALVE . . . . . . . . on cylinder head

Y6102
CYL. 2 FUEL INJECTION VALVE . . . . . . . .
on cylinder head



Y6103 CYL. 3 FUEL INJECTION VALVE . . . . . . . . on cylinder head
Y6104 CYL. 4 FUEL INJECTION VALVE . . . . . . . . on cylinder head
Y6105 CYL. 5 FUEL INJECTION VALVE . . . . . . . . on cylinder head
Y6106 CYL. 6 FUEL INJECTION VALVE . . . . . . . . on cylinder head

Y6120

EVAPORATIVE EMISSION VALVE . . . . . . .

LH side of engine compartment (Z3 VERSIONS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

44-1


Y6120 EVAPORATIVE EMISSION VALVE . . . . . . . LH side of engine compartment (M VERSIONS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34-2
Y6130 IDLE SPEED CONTROL VALVE . . . . . . . . . front of engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43-1
Y6133 AIR PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . rear RH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31-2

Y6139
LEAKAGE DIAGNOSIS PUMP . . . . . . . . . . .
under LH center of car . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
47-1

Y6163 SECONDARY AIR PUMP VALVE . . . . . . . . LH side of engine compartment (M VERSIONS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33-2
Y6163 SECONDARY AIR PUMP VALVE . . . . . . . . LH side of engine compartment (Z3 VERSIONS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44-2


Y6167

VALVE, INDIVIDUAL CONTROL INTAKE
SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

39-3




Y6275

VARIABLE CAMSHAFT CONTROL VALVE
1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
on cylinder head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

31-3



COMPONENT LOCATION CHART









COMP.8500.0 7100.0LOCATION DESCRIPTION


Y6275z

VARIABLE CAMSHAFT CONTROL VALVE
1 (INLET) . . . . . . . . . . . . . . . . . . . . . . . . . . .
on cylinder head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

42-2




Y6276

VARIABLE CAMSHAFT CONTROL VALVE
2 (OUTLET) . . . . . . . . . . . . . . . . . . . . . . . . .
on cylinder head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

47-2


Y6550 SOLENOID VALVE (”RUNNING LOSSES”) under LH center of car . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34-3
Y8521 TRANSMISSION VALVE UNIT . . . . . . . . . . . on RH side of transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-1



A35y
BOARD
COMPUTER
(BC – LOW)
X10245
X18349
7100.0 COMPONENT LOCATION VIEWS
ELECTRICAL CONTROL MODULE LOCATIONS












A6000
ENGINE CONTROL
MODULE (DME)
A8
CRUISE CONTROL
MODULE
(TEMPOMAT)
X782
S220
AIR CONDITIONING/
RECIRCULATING
SWITCH ASSEMBLY K6300
ENGINE CONTROL
MODULE RELAYK6326
UNLOADER RELAY,
TERMINAL 15
X1175



K6304
SECONDARY AIR
PUMP RELAY

X6000

A52
SLIP CONTROL
MODULE
(ABS/ASC)
X22

E17
RIGHT REAR LIGHT
ASSEMBLY


COMPONENT LOCATION VIEWS










F97
FUSIBLE LINK
G6430
B+ JUMP START
JUNCTION POINTG1
BATTERY
X318




M6510
STARTERG6509
GENERATOR
COMPONENT LOCATION VIEWS










X0
B+ JUNCTION
POINT
X6510
X6512
X6509
X7509



X494
GROUND
X170
GROUND


COMPONENT LOCATION VIEWS










X9633
GROUNDX18170
GROUND
X1441
GROUND







COMPONENT LOCATION VIEWS










X165
GROUND

X6454
GROUND
X6455
GROUND

X1166
GROUND
X10010
GROUND
X13004
GROUND

X13006
GROUND


COMPONENT LOCATION VIEWS










X166
GROUND
X13016
GROUND