Dtc P0617 Starter Relay Circuit High

Engine. Lexus Gs430, Gs300. Uzs190 Grs190
3Gr-Fse Engine Control System. Lexus Gs430, Gs300. Uzs190 Grs190

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING INTELLIGENT TESTER (STARTER SIGNAL)

INSPECT PARK / NEUTRAL POSITION SWITCH

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 Condition
Trouble Area
P0617
When 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
  1. Park/Neutral Position (PNP) switch
  2. PNP switch
  3. Cranking holding function circuit
  4. ECM

WIRING DIAGRAM


Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fse Engine Control System.Sfi System. Dtc P0617 Starter Relay Circuit High


Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fse Engine Control System.Sfi System. Dtc P0617 Starter Relay Circuit High


INSPECTION PROCEDURE

HINT:
  1. 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 on page Click here.
  2. Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when a malfunction is 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 USING INTELLIGENT TESTER (STARTER SIGNAL)

  1. Connect the intelligent tester to the DLC3.

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

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

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

    OK:

    Engine Switch Condition
    		ON
    		START
    Starter Signal
    		OFF
    		ON


OK
REPLACE ECM
NG


2.INSPECT PARK / NEUTRAL POSITION SWITCH
Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fse Engine Control System.Sfi System. Dtc P0617 Starter Relay Circuit High

  1. Inspect the Park/Neutral Position (PNP) switch.

    1. Disconnect the E25 PNP switch connector.

    2. Measure the resistance when the transmission gear selector lever is moved to each position.

      Standard resistance:
      Gear Selector Lever Position
      		Tester Connection
      		Specified Condition
      P
      		4 - 5
      		Below 1 Ω
      N
      		4 - 5
      		Below 1 Ω

    3. Reconnect the PNP switch connector.



NG
REPLACE PARK / NEUTRAL POSITION SWITCH ASSEMBLY (THEN CHECK CRANKING HOLDING FUNCTION CIRCUIT)
OK

CHECK CRANKING HOLDING FUNCTION CIRCUIT