Lexus RX300 (MCU15). Service manual — part 231

DI–156

–

DIAGNOSTICS

AUTOMATIC TRANSAXLE

LEXUS RX300 (RM785E)

P1760

(DI–185)

Linear Solenoid for Accumulator

Pressure Control Circuit Mal-

function

(SLT Solenoid Valve)

S Open or short in SLT solenoid valve circuit

S SLT solenoid valve

S Engine & ECT ECU

F

f

P1780

(DI–188)

Park/Neutral Position Switch

Malfunction

S Short in neutral start switch circuit

S Neutral start switch

S Engine & ECT ECU

F

f

DI61O–03

D10059

Input Turbine Speed Sensor

LHD only:
Kick–down Switch

Pattern Select Switch

O/D Main Switch

Engine & ECT ECU

Stop Light Switch

DLC3

SL1 Solenoid Valve

SLT Solenoid Valve

ATF Temperature Sensor

SL2 Solenoid Valve

Neutral Start Switch

DSL Solenoid Valve

S4 Solenoid Valve

Counter Gear Speed Sensor

Combination Meter
DCheck Engine Warning Light (CHK ENG)

–

DIAGNOSTICS

AUTOMATIC TRANSAXLE

DI–157

LEXUS RX300 (RM785E)

PARTS LOCATION

DI84J–01

D01054

D03442

E8

E7

E6

E10

E9

DI–158

–

DIAGNOSTICS

AUTOMATIC TRANSAXLE

LEXUS RX300 (RM785E)

TERMINALS OF ECU

Symbols (Terminals No.)

Wiring Color

Condition

STD Voltage (V)

IG ON

10 – 14

SL1+ (E8–20) ↔ SL1– (E8–19)

L–B ↔ L–W

1st or 2nd gear

10 – 14

(

)

(

)

3rd or O/D gear

Below 1

IG ON

Below 1

SL2+ (E8–9) ↔ SL2– (E8–8)

R–B ↔ R–W

1st or 2nd gear

10 – 14

(

)

(

)

3rd or O/D gear

Below 1

DSL (E8 7) ↔ Body ground

R–L ↔ Body

IG ON

Below 1

DSL (E8–7) ↔ Body ground

R L ↔ Body

ground

Vehicle driving under lock–up range

10 – 14

NC

+

(E8–24) ↔ NC

–

(E8–23)

R ↔ G

Engine is running

Pulse signal is output

Below 1 ↔ 4 – 5

NT

+

(E6–5) ↔ NT

–

(E6–4)

L ↔ LG

Engine is running

Pulse signal is output

Below 1 ↔ 4 – 5

SLT

+

(E6–3) ↔ SLT

–

(E6–2)

G–B ↔ G

IG ON

10 – 14

OD1 (E10–24) ↔ E1 (E7–17)

Y–G ↔ BR

IG ON

5 – 6

L (E6 13) ↔ E1 (E7 17)

L R ↔ BR

IG ON and Shift lever L range

10 – 14

L (E6–13) ↔ E1 (E7–17)

L–R ↔ BR

IG ON and Shift lever other than L range

Below 1

2 (E6 14) ↔ E1 (E7 17)

G Y ↔ BR

IG ON and Shift lever 2 range

10 – 14

2 (E6–14) ↔ E1 (E7–17)

G–Y ↔ BR

IG ON and Shift lever other than 2 range

Below 1

R (E6 8 )↔ E1 (E7 17)

R B ↔ BR

IG ON and Shift lever R range

10 – 14

R (E6–8 )↔ E1 (E7–17)

R–B ↔ BR

IG ON and Shift lever other than R range

Below 1

D (E6 16) ↔ E1 (E7 17)

G R ↔ BR

IG ON and Shift lever D range

10 – 14

D (E6–16) ↔ E1 (E7–17)

G–R ↔ BR

IG ON and Shift lever other than D range

Below 1

N (E6 7) ↔ E1 (E7 17)

R W ↔ BR

IG ON and Shift lever N range

10 – 14

N (E6–7) ↔ E1 (E7–17)

R–W ↔ BR

IG ON and Shift lever other than N range

Below 1

P (E6 9) ↔ E1 (E7 17)

G W ↔ BR

IG ON and Shift lever P range

10 – 14

P (E6–9) ↔ E1 (E7–17)

G–W ↔ BR

IG ON and Shift lever other than P range

Below 1

ODLP (E9 9) ↔ E1 (E7 17)

R W ↔ BR

IG ON and O/D OFF indicator light lights up

Below 1

ODLP (E9–9) ↔ E1 (E7–17)

R–W ↔ BR

IG ON and O/D OFF indicator light goes off

10 – 14

ODMS (E6 12) ↔ E1 (E7 17)

GR L ↔ BR

IG ON

10 – 14

ODMS (E6–12) ↔ E1 (E7–17)

GR–L ↔ BR

IG ON and press continuously O/D main switch

Below 1

THO (E7–13) ↔ E2 (E7–18)

G–Y ↔ BR

IG ON and ATF temperature 110°C (230°F)

Below 1

S4 (E6 1) ↔ E1 (E7 17)

R Y ↔ BR

IG ON

Below 1

S4 (E6–1) ↔ E1 (E7–17)

R–Y ↔ BR

IG ON and O/D gear

10 – 14

STP (E9 15) ↔ E1 (E7 17)

G O ↔ BR

IG ON and Brake pedal is depressed

7.5 – 14

STP (E9–15) ↔ E1 (E7–17)

G–O ↔ BR

IG ON and Brake pedal is released

Below 1.5

–

DIAGNOSTICS

AUTOMATIC TRANSAXLE

DI–159

LEXUS RX300 (RM785E)

*KD (E10 11) ↔ E1 (E7 17)

G W ↔ BR

IG ON and accelerator pedal depressed

10 – 14

*KD (E10–11) ↔ E1 (E7–17)

G–W ↔ BR

IG ON and accelerator pedal released

Below 1.0