Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Inspection Procedure
- CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - BODY GROUND)
- Disconnect the transmission control switch connector (See REMOVAL ).
- Turn the engine switch off.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
STANDARD RESISTANCE SPECIFICATIONTester Connection Condition Specified Condition J43-5 (E) - Body ground Always Below 1 Ω
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: Go to Next Step
- CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - BATTERY)
- Disconnect the transmission control switch connector.
- Turn the engine switch on (IG).
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
STANDARD VOLTAGE SPECIFICATIONTester Connection Switch Condition Specified Condition J43-3 (IG) - Body ground Engine switch on (IG) 11 to 14 V Engine switch off Below 1 V
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: Go to Next Step
- INSPECT TRANSMISSION CONTROL SWITCH
- Disconnect the transmission control switch connector.
- Measure the resistance between each terminal of the transmission control switch when the shift lever is moved to each position.
Standard Resistance
STANDARD RESISTANCE SPECIFICATIONTester Connection Condition Specified Condition 3 (IG) - 7 (S) Shift lever in M, "+" or "-" Below 1 Ω Shift lever not in M, "+" or "-" 10 kΩ or higher 2 (SFTU) - 5 (E) Shift lever held in "+" (Up-shift) Below 1 Ω Shift lever not held in "+" 10 kΩ or higher 1 (SFTD) - 5 (E) Shift lever held in "-" (Down-shift) Below 1 Ω Shift lever not held in "-" 10 kΩ or higher
NG: REPLACE TRANSMISSION CONTROL SWITCH (See REMOVAL )
OK: Go to Next Step
- CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - ECM)
- Connect the transmission control switch connector.
- Disconnect the ECM connector.
- Turn the engine switch on (IG).
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
STANDARD VOLTAGE SPECIFICATIONTester Connection Condition Specified Condition A6-16 (S) - Body ground - Engine switch on (IG)
- Shift lever in M, "+" or "-"
11 to 14 V A6-16 (S) - Body ground - Engine switch on (IG)
- Shift lever not in M, "+" or "-"
Below 1 V - Turn the engine switch off.
- Disconnect the spiral cable connector
- Measure the resistance according to the value(s) in the table below
Standard Resistance
STANDARD RESISTANCE SPECIFICATIONTester Connection Condition Specified Condition A6-8 (SFTU) - Body ground Shift lever held in "+" (Up-shift) Below 1 Ω Shift lever not held in "+" 10 kΩ or higher A6-7 (SFTD) - Body ground Shift lever held in "-" (Down-shift) Below 1 Ω Shift lever not held in "-" 10 kΩ or higher
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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