Lexus ES: Shift Paddle Switch Circuit

DESCRIPTION

Moving the shift lever to S enables the shift range to be selected. The shift range can be selected by operating the "+" or "-" shift paddle switch.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

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PROCEDURE

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Enter the following menus: Powertrain / Hybrid Control / Data List / Sports Shift UP Signal, Sports Shift DOWN Signal.

(d) Read the values displayed on the Techstream.

(e) Turn the power switch off.

A

CHECK FOR INTERMITTENT PROBLEMS

B

(a) Disconnect the G60 hybrid vehicle control ECU connector.

(b) Disconnect the G26 transmission control switch (shift lock control unit assembly) connector.

(c) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition G60-9 (SFTU) - Body ground Shift paddle switch RH (+) operated 3 Ω or less G60-8 (SFTD) - Body ground Shift paddle switch LH (-) operated 3 Ω or less G60-9 (SFTU) - Body ground Shift paddle switch RH (+) not operated 10 kΩ or higher G60-8 (SFTD) - Body ground Shift paddle switch LH (-) not operated 10 kΩ or higher

*a Rear view of wire harness connector (to Hybrid Vehicle Control ECU)

(d) Reconnect the G26 transmission control switch (shift lock control unit assembly) connector.

(e) Reconnect the G60 hybrid vehicle control ECU connector.

OK

REPLACE HYBRID VEHICLE CONTROL ECU

NG

(a) Disconnect the G20 spiral cable sub-assembly connector.

*a Front view of wire harness connector (to Spiral Cable Sub-assembly)

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance (Open):

(c) Reconnect the G20 spiral cable sub-assembly connector.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

(a) Disconnect the G60 hybrid vehicle control ECU connector.

(b) Disconnect the G20 spiral cable sub-assembly connector.

(c) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition G60-9 (SFTU) - G20-8 (SUP) Always Below 1 Ω G60-8 (SFTD) - G20-1 (SDN) Always Below 1 Ω G60-9 (SFTU) or G20-8 (SUP) - Body ground Always 10 kΩ or higher G60-8 (SFTD) or G20-1 (SDN)- Body ground Always 10 kΩ or higher

*a Rear view of wire harness connector (to Hybrid Vehicle Control ECU) *b Front view of wire harness connector (to Spiral Cable Sub-assembly)

(d) Reconnect the G20 spiral cable sub-assembly connector.

(e) Reconnect the G60 hybrid vehicle control ECU connector.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

(a) Inspect the spiral cable sub-assembly.

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NG

REPLACE SPIRAL CABLE SUB-ASSEMBLY

OK

(a) Inspect the shift paddle switch LH (transmission shift switch assembly).

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NG

REPLACE SHIFT PADDLE SWITCH LH (TRANSMISSION SHIFT SWITCH ASSEMBLY)

OK

(a) Inspect the shift paddle switch RH (transmission shift switch assembly).

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NG

REPLACE SHIFT PADDLE SWITCH RH (TRANSMISSION SHIFT SWITCH ASSEMBLY)

OK

(a) Disconnect the z5 No. 1 switch wire connector.

(b) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition z5-2 (SUP) - z5-3 (ECC) "+" (Up shift) shift paddle switch operated and held Below 1 Ω "+" (Up shift) shift paddle switch not operated 10 kΩ or higher z5-4 (SDN) - z5-3 (ECC) "-" (Down shift) shift paddle switch operated and held Below 1 Ω "-" (Down shift) shift paddle switch not operated 10 kΩ or higher

*a Front view of wire harness connector (to Spiral Cable Sub-assembly)

(c) Reconnect the z5 No. 1 switch wire connector.

OK

CHECK FOR INTERMITTENT PROBLEMS

NG

REPLACE NO. 1 SWITCH WIRE

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