Lexus IS250 IS220d GSE20 ALE20 4GR-FSE ENGINE CONTROL SYSTEM

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE OF INTELLIGENT TESTER (STARTER SIGNAL)

INSPECT PARK / NEUTRAL POSITION SWITCH (A/T) OR CLUTCH SWITCH ASSEMBLY (M/T)

DTC P0617 Starter Relay Circuit High

DESCRIPTION

While the engine is being cranked, the positive battery voltage is applied to terminal STA of the ECM.


If the ECM detects the Starter Control (STA) signal while the vehicle is being driven, it determines that that there is a malfunction in the STA circuit. The ECM then illuminates the MIL and sets the DTC.


This monitor runs when the vehicle is driven at 20 km/h (12.4 mph) for over 20 seconds.

DTC No.DTC Detection ConditionTrouble Area
P0617When conditions (a), (b) and (c) met, positive (+B) battery voltage 10.5 V or more applied to ECM for 20 seconds
(1 trip detection logic):
(a) Vehicle speed more than 20 km/h (12.4 mph)
(b) Engine speed more than 1,000 rpm
(c) STA signal ON
Park/Neutral Position (PNP) switch (A/T) or clutch start switch (M/T)
PNP switch (A/T) or clutch start switch (M/T)
Cranking holding function circuit
ECM

WIRING DIAGRAM

Dtc P0617 Starter Relay Circuit High. 4GR-FSE ENGINE CONTROL SYSTEM. Lexus IS250 IS220d GSE20 ALE20

INSPECTION PROCEDURE

  • HINT:
The following troubleshooting flowchart is based on the premise that the engine is cranked normally. If the engine will not crank, proceed to the problem symptoms table .
Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred .
1.READ VALUE OF INTELLIGENT TESTER (STARTER SIGNAL)

Connect the intelligent tester to the DLC3.

Turn the engine switch on (IG) and turn the tester ON.

Enter the following menus: Power train / Engine / Data List / Starter Signal.

Check the value displayed on the tester when the engine switch is turned to the ON and START positions.

  • OK:
  • Engine Switch ConditionONSTART
    STARTER SIGOFFON
OK
REPLACE ECM
NG
2.INSPECT PARK / NEUTRAL POSITION SWITCH (A/T) OR CLUTCH SWITCH ASSEMBLY (M/T)
Dtc P0617 Starter Relay Circuit High. 4GR-FSE ENGINE CONTROL SYSTEM. Lexus IS250 IS220d GSE20 ALE20

Inspect the Park/Neutral Position (PNP) switch (A/T) or clutch switch (M/T).


Disconnect the E45*1, A24*2 switch connector.

  • HINT:
  • *1: A/T
  • *2: M/T

Measure the resistance of the switch connector.

  • Standard resistance (A/T):
  • Gear Selector Lever PositionTester ConnectionSpecified Condition
    P4 - 5Below 1 Ω
    N4 - 5Below 1 Ω
  • Standard resistance (M/T):
  • Clutch Pedal OperationTester ConnectionSpecified Condition
    Depressed1 - 2Below 1 Ω

Reconnect the switch connector.

NG
REPLACE PARK / NEUTRAL POSITION SWITCH (A/T) OR CLUTCH SWITCH ASSEMBLY (M/T) (THEN CHECK CRANKING HOLDING FUNCTION CIRCUIT)
OK
CHECK CRANKING HOLDING FUNCTION CIRCUIT
LEXUS IS250, IS220d / GSE20 ALE20
4GR-FSE ENGINE CONTROL SYSTEM
Lexus IS250 IS220d GSE20 ALE20
SFI SYSTEM