Toyota Tundra (2015 year). Manual — part 2460
OK
(a) Reconnect the Z10 position control ECU and switch assembly
connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
TESTER CONNECTION
SWITCH CONDITION
SPECIFIED CONDITION
Z4-4 - Z4-3
Lifter switch on
4.8 to 5.1 V
Text in Illustration
*a
NG
REPLACE POSITION CONTROL ECU AND SWITCH
ASSEMBLY
6.
CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH
ASSEMBLY - FRONT SEAT CUSHION FRAME SUB-ASSEMBLY LH)
(a) Disconnect the Z10 position control ECU and switch assembly connector.
(b) Disconnect the Z14 front seat cushion frame sub-assembly LH (vertical motor) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
Z10-3 (SSFV) - Z14-2
Always
Below 1 Ω
Z10-1 (SGND) - Z14-1
Always
Below 1 Ω
Z10-3 (SSFV) - Z10-1 (SGND)
Always
10 kΩ or higher
Z10-3 (SSFV) or Z14-2 - Body ground
Always
10 kΩ or higher
Z10-1 (SGND) or Z14-1 - Body ground
Always
10 kΩ or higher
SEAT: FRONT POWER SEAT CONTROL SYSTEM (w/ Memory): B265...
OK
OK
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
7.
CHECK POSITION CONTROL ECU AND SWITCH ASSEMBLY (VERTICAL MOTOR
CIRCUIT)
(a) Reconnect the Z10 position control ECU and switch assembly
connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
TESTER CONNECTION
SWITCH CONDITION
SPECIFIED CONDITION
Z14-2 - Z14-1
Front vertical switch on
4.8 to 5.1 V
Text in Illustration
*a
NG
REPLACE POSITION CONTROL ECU AND SWITCH
ASSEMBLY
8.
CHECK FRONT SEAT CUSHION FRAME SUB-ASSEMBLY LH
(a) Temporarily replace the front seat cushion frame sub-assembly LH with a new or normally
functioning one
.
(b) Clear the DTCs
.
SEAT: FRONT POWER SEAT CONTROL SYSTEM (w/ Memory): B265...
OK
(c) Check for DTCs
.
OK:
DTC B2658 is not output.
NG
GO TO STEP 9
OK
END (FRONT SEAT CUSHION FRAME
SUB-ASSEMBLY LH WAS DEFECTIVE)
9.
CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH
ASSEMBLY - FRONT SEATBACK FRAME SUB-ASSEMBLY LH)
(a) Disconnect the Z10 position control ECU and switch assembly connector.
(b) Disconnect the Z6 front seatback frame sub-assembly LH (reclining motor) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
Z10-11 (SSRR) - Z6-4
Always
Below 1 Ω
Z10-1 (SGND) - Z6-3
Always
Below 1 Ω
Z10-11 (SSRR) - Z10-1 (SGND)
Always
10 kΩ or higher
Z10-11 (SSRR) or Z6-4 - Body ground
Always
10 kΩ or higher
Z10-1 (SGND) or Z6-3 - Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
10.
CHECK POSITION CONTROL ECU AND SWITCH ASSEMBLY (RECLINING MOTOR
CIRCUIT)
SEAT: FRONT POWER SEAT CONTROL SYSTEM (w/ Memory): B265...
OK
(a) Reconnect the Z10 position control ECU and switch assembly
connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
TESTER CONNECTION
SWITCH CONDITION
SPECIFIED CONDITION
Z6-4 - Z6-3
Reclining switch on
4.8 to 5.1 V
Text in Illustration
*a
NG
REPLACE POSITION CONTROL ECU AND SWITCH
ASSEMBLY
11.
CHECK FRONT SEATBACK FRAME SUB-ASSEMBLY LH
(a) Temporarily replace the front seatback frame sub-assembly LH (reclining motor) with a new or
normally functioning one
.
(b) Clear the DTCs
.
(c) Check for DTCs
.
OK:
DTC B2658 is not output.
NG
REPLACE POSITION CONTROL ECU AND SWITCH
ASSEMBLY
OK
END (FRONT SEATBACK FRAME SUB-ASSEMBLY LH
WAS DEFECTIVE)
SEAT: FRONT POWER SEAT CONTROL SYSTEM (w/ Memory): B265...
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