DTC 51 Switch Condition Signal Circuit
CIRCUIT DESCRIPTION
Park/Neutral Position Switch
The ECM uses the signals from the park/neutral position switch to determine whether the transmission is in park
or neutral, or in some other position.
Air Conditioning Switch Signal
The ECM uses the output from the air conditioning switch to determine whether or not the air conditioning is
operating so that it can increase the idling speed of the engine if necessary.
Throttle Position Sensor IDL Signal
The IDL contacts are mounted in the throttle position sensor, and detects the idle condition.
DTC No. Diagnostic Trouble Code Detecting Condition Trouble Area
51
(1) 3 sec. or more after engine starts with
closed throttle position switch OFF
(IDL1)
(2) Park/neutral position switch: OFF
(Shift position in ºRº, ºDº, º2º or º1º
position.)
(3) A/C switch ON
Throttle position sensor IDL circuit
Accelerator pedal and cable
Park/neutral position switch
A/C switch circuit
ECM
HINT: In this circuit, diagnosis can only be made in the test mode.
± ENGINE2JZ±GTE ENGINE TROUBLESHOOTINGEG±571
SERVICE SPECIFICATIONS
SERVICE DATA
Turbocharger
Turbocharging pressure
Impeller wheel axial play Limit
Impeller wheel radial play Limit
61±75 kPa (0.62±0.76 kgf/cm2, 8.8±10.8 psi)
0.162 mm (0.0064 in.)
0.110 mm (0.0045 in.)
TORQUE SPECIFICATIONS
Part tightened
NVm
kgfVcm
ftVlbf
Turbocharger x Turbine outlet elbow 25 250 18
Turbo water pipe x Turbocharger 8.8 90 78 in.Vlbf
Side bearing housing plate x Turbocharger 8.8 90 78 in.Vlbf
No.2 air tube x No.2 turbocharger 21 210 15
Turbocharger x Exhaust manifold
54
550
40
Turbo oil pipe x Turbocharger 21 210 15
Turbo oil pipe x Cylinder block 39 400 29
Turbocharger stay x Turbocharger 43 440 32
Turbocharger stay x Cylinder block
43
440
32
Exhaust gas control valve x Turbine outlet elbow 69 700 51
Main heated oxygen sensor x Exhaust gas control valve 20 200 14
Exhaust gas control valve stay x Exhaust gas control valve 43 440 32
Exhaust gas control valve stay x Cylinder block
43
440
32
Exhaust bypass pipe x Turbine outlet elbow 25 250 18
Exhaust bypass pipe x Exhaust gas control valve 25 250 18
Intake air control valve x No.2 turbocharger 21 210 15
No.4 air tube x No.1 turbocharger
21
210
15
No.1 air tube x No.1 turbocharger
21
210
15
No.2 front exhaust pipe x Exhaust gas control valve 62 630 46
Front exhaust pipe x No.2 front exhaust pipe 58 590 43
Pipe support bracket x Transmission 43 440 32
Upper front crossmember extension x Front suspension Bolt
Nut
29
33
300
340
22
25
Front lower arm bracket stay x Front suspension Bolt
Nut
44
59
450
600
33
43
CAC duct x CAC 4.9 50 43 in.Vlbf
CAC x Body 13 135 10
EG±162± ENGINETURBOCHARGER SYSTEM (2JZ±GTE)
