Lexus ES300 (1997 year). Manual — part 346

DI0CH–01

–

DIAGNOSTICS

AUTOMATIC TRANSAXLE

DI–161

313

1997 LEXUS ES300 (RM511U)

DIAGNOSTIC TROUBLE CODE CHART

If a DTC is displayed during the DTC check, check the circuit listed for that code in the table below and pro-
ceed to the page given.
* : –...MIL does not light /

...MIL light up

DTC No.

(See Page)

Detection Item

Trouble Area

MIL *

Memory

P0500

(

DI–106

)

Vehicle Speed Sensor Malfunc-

tion

(No.1 Vehicle Speed Sensor)

Open or short in No.1 vehicle speed sensor circuit

No.1 vehicle speed sensor

Combination meter

ECM

P0750

(

DI–169

)

Shift Solenoid A Malfunction

(Shift Solenoid Valve No.1)

Shift solenoid valve No.1 is stuck open or closed

Valve body is blocked up or stuck

P0753

(

DI–170

)

Shift Solenoid A Electrical Mal-

function

(Shift Solenoid Valve No.1)

Open or short in shift solenoid valve No.1 circuit

Shift solenoid valve No.1

ECM

P0755

(

DI–169

)

Shift Solenoid B Malfunction

(Shift Solenoid Valve No.2)

Shift solenoid valve No.2 is stuck open or closed

Valve body is blocked up or stuck

P0758

(

DI–170

)

Shift Solenoid B Electrical Mal-

function

(Shift Solenoid Valve No.2)

Open or short in shift solenoid valve No.2 circuit

Shift solenoid valve No.2

ECM

P0770

(

DI–174

)

Shift Solenoid E Malfunction

(Shift Solenoid Valve SL)

Shift solenoid valve SL is stuck open or closed

Valve body is blocked up or stuck

Lock–up clutch

P0773

(

DI–176

)

Shift Solenoid E Electrical Mal-

function

(Shift Solenoid Valve SL)

Open or short in shift solenoid valve SL circuit

Shift solenoid valve SL

ECM

P1520

(

DI–179

)

Stop Light Switch Signal Mal-

function

Open or short in stop light switch circuit

Stop light switch

ECM

P1705

(

DI–180

)

NC2 Revolution Sensor Circuit

Malfunction

(Direct Clutch Speed Sensor)

Open or short in direct clutch speed sensor circuit

Direct clutch speed sensor

ECM

P1765

(

DI–182

)

Linear Solenoid for Accumulator

Pressure Control Circuit Mal-

function

(Shift Solenoid Valve SLN)

Open or short in shift solenoid valve SLN circuit

Shift solenoid valve SLN

ECM

P1780

(

DI–185

)

Park/Neutral Position Switch

Malfunction

Short in park/neutral position switch circuit

Park/neutral position switch

ECM

DI0CJ–01

Q07932

Engine Coolant Temp. Sensor

Cruise Control ECU

Throttle Position Sensor

O/D Main Switch

O/D OFF Indicator LIght

DLC3

DLC2

Stop Light Switch

Vehicle Speed Sensor

Shift Solenoid Valve SLN

Shift Solenoid Valve No.1,No2

Shift Solenoid Valve SL

Park/Neutral Position Switch

Direct Clutch Speed Sensor

ECM

Crankshaft Postion
Sensor

DI–162

–

DIAGNOSTICS

AUTOMATIC TRANSAXLE

314

1997 LEXUS ES300 (RM511U)

PARTS LOCATION

DI0CL–01

FI6810

E10

3433 3231

30 2928 27

–

DIAGNOSTICS

AUTOMATIC TRANSAXLE

DI–163

315

1997 LEXUS ES300 (RM511U)

TERMINALS OF ECM

Symbols (Terminals No.)

Wiring Color

Condition

STD Voltage (V)

IG ON and Vehicle stationary

Below 1

SPD

↔

E1 (E7–12

↔

E8–16)

V–W

↔

IG ON and Turn one rear wheel slowly

Pulse signal is output

Below 1

↔

IG ON

∼

↔

E1 (E10–11

↔

E8–16)

↔

1st or 2nd gear

∼

↔

E1 (E10 11

↔

E8 16)

↔

3rd or O/D gear

Below 1

IG ON

Below 1

↔

E1 (E10–17

↔

E8–16)

L–B

↔

1st or 2nd gear

∼

↔

E1 (E10 17

↔

E8 16)

L B

↔

3rd or O/D gear

Below 1

E1 (E10 27

E8 16)

P L

IG ON

Below 1

↔

E1 (E10–27

↔

E8–16)

P–L

↔

Vehicle driving under lock–up position

∼

NC2

↔

NC2

–

(E9–9

↔

E9–4)

Y–B

↔

W–L

Engine is running

Pulse signal is output

Below 1

↔

∼

SLN

↔

SLN

–

(E10–2

↔

E 8–2)

B–O

↔

LG–R

IG ON

∼

OD1

↔

E1 (E7–7

↔

E8–16)

Y–B

↔

IG ON

∼

OD2

E1 (E7 6

E8 16)

G O

O/D main switch ON

∼

OD2

↔

E1 (E7–6

↔

E8–16)

G–O

↔

O/D main switch OFF

Below 1

E1 (E7 1

E8 16)

IG ON and Shift lever L position

∼

↔

E1 (E7–1

↔

E8–16)

↔

IG ON and Shift lever other than L position

Below 1

E1 (E7 10

E8 16)

IG ON and Shift lever 2 position

∼

↔

E1 (E7–10

↔

E8–16)

↔

IG ON and Shift lever other than 2 position

Below 1

E1 (E7 15

E8 16)

R B

IG ON and Shift lever R position

∼

↔

E1 (E7–15

↔

E8–16)

R–B

↔

IG ON and Shift lever other than R position

Below 1

NSW

↔

B W

IG ON and Shift lever P or N position

∼

NSW

↔

(E10–14

↔

E8–16)

B–W

↔

IG ON and Shift lever other than P or N position

Below 1

STP

E1 (E7 24

E8 16)

G W

IG ON and Brake pedal is depressed

7.5

∼

STP

↔

E1 (E7–24

↔

E8–16)

G–W

↔

IG ON and Brake pedal is released

Below 1

DI0CO–01

DI–164

–

DIAGNOSTICS

AUTOMATIC TRANSAXLE

316

1997 LEXUS ES300 (RM511U)

PROBLEM SYMPTOMS TABLE

If a normal code is displayed during the diagnostic trouble code check but the trouble still occurs, check the
circuits for each symptom in the order given in the charts on the following pages and proceed to the page
given for troubleshooting.
The Matrix Chart is divided into 3 chapters.
Chapter 1: Electronic Circuit Matrix Chart
Chapter 2: On–vehicle Repair Matrix Chart
Chapter 3: Off–vehicle repair Matrix Chart

If the instruction ”Proceed to next circuit inspection shown on matrix chart” is given in the flow chart
for each circuit, proceed to the circuit with the next highest number in the table to continue the check.

If the trouble still occurs even though there are no abnormalities in any of the other circuits, then check
and replace the ECM.

Chapter 1: Electronic Circuit Matrix Chart

Symptom

Suspect Area

See page

Vehicle does not move in any forward position and reverse posi-

tion

1. On–vehicle repair matrix chart

2. Off–vehicle repair matrix chart

DI–164

No up–shift (1st

→