Transmission Control Switch Circuit [12/2013 - 11/2016]: Procedure
WARNING: This page is about a different car, the 2016 Toyota Highlander, 2015 Toyota Highlander, and 2014 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK HARNESS AND CONNECTOR (BATTERY - TRANSMISSION CONTROL SWITCH)
- Disconnect the transmission control switch connector.
*a Front view of wire harness connector
(to Transmission Control Switch) - Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition F46-3 (IG) - Body ground Ignition switch ON 11 to 14 V Ignition switch off Below 1 V Result
Proceed to OK NG
Result: 2
NG
CHECK POWER SOURCE CIRCUIT
Result: 1
OK
See step 2
- Disconnect the transmission control switch connector.
- CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - BODY GROUND)
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition F46-5 (E) - Body ground Always Below 1 Ω *a Front view of wire harness connector
(to Transmission Control Switch)Result
Proceed to OK NG
Result: 2
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result: 1
OK
See step 3
- Measure the resistance according to the value(s) in the table below.
- INSPECT TRANSMISSION FLOOR SHIFT ASSEMBLY (TRANSMISSION CONTROL SWITCH)
- Measure the resistance between each terminal of the transmission control switch when the shift lever is moved to each position.
Standard Resistance
Tester Connection Condition Specified Condition F46-3 (IG) - F46-7 (S) Shift lever in S, "+" or "-" Below 1 Ω Shift lever not in S, "+" or "-" 10 kΩ or higher F46-2 (SFTU) - F46-5 (E) Shift lever held in "+"
(Up-shift)Below 1 Ω Shift lever not held in "+" 10 kΩ or higher F46-1 (SFTD) - F46-5 (E) Shift lever held in "-"
(Down-shift)Below 1 Ω Shift lever not held in "-" 10 kΩ or higher *a Component without harness connected
(Transmission Control Switch)Result
Proceed to OK NG
Result: 2
NG
REPLACE TRANSMISSION FLOOR SHIFT ASSEMBLY (TRANSMISSION CONTROL SWITCH). Refer to COMPONENTS [12/2013 - 11/2016]
Result: 1
OK
See step 4
- Measure the resistance between each terminal of the transmission control switch when the shift lever is moved to each position.
- CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - ECM)
- Connect the transmission control switch connector.
- Disconnect the ECM connector.
*a Front view of wire harness connector
(to ECM) - Turn the ignition switch to ON.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition A43-37 (S) - Body ground - Ignition switch ON
- Shift lever in S, "+" or "-"
11 to 14 V A43-37 (S) - Body ground - Ignition switch ON
- Shift lever not in S, "+" or "-"
Below 1 V - Turn the ignition switch off.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition A43-34 (SFTU) - Body ground Shift lever held in "+"
(Up-shift)Below 1 Ω Shift lever not held in "+" 10 kΩ or higher A43-50 (SFTD) - Body ground Shift lever held in "-"
(Down-shift)Below 1 Ω Shift lever not held in "-" 10 kΩ or higher Result
Proceed to OK NG
Result: 1
OK
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE [12/2013 - 11/2016]
Result: 2
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR