Transmission Control Switch Circuit

DESCRIPTION

When moving the shift lever into the S position using the transmission control switch, it is possible to switch the shift range position between "1" (first range) and "6" (sixth range).
Shifting up "+" once raises one shift range position, and shifting down "-" lowers one shift range position.

WIRING DIAGRAM

INSPECTION PROCEDURE

1. CHECK HARNESS AND CONNECTOR (BATTERY - TRANSMISSION CONTROL SWITCH)

1. Disconnect the transmission control switch connector of shift lock control unit assembly.

2. Measure the voltage according to the value(s) in the table below.

   Standard voltage:

   Switch Condition	Tester Connection	Specified Condition
   Engine switch on (IG)	3 - Body ground	10 to 14 V
   Engine switch off	↑	Below 1 V

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

2. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - BODY GROUND)

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

   Standard resistance:

   Tester Connection	Specified Condition
   5 - Body ground	Below 1 Ω

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3. INSPECT TRANSMISSION CONTROL SWITCH

1. Measure resistance between each terminal of shift lock control unit assembly when the shift lever is moved to each position.

   Standard resistance:

   Shift Position	Tester Connection	Specified Condition
   S, "+" and "-"	3 - 7	Below 1 Ω
   Except S, "+" and "-"	↑	10 kΩ or higher
   Press continuously "+" (Up shift)	2 - 5	Below 1 Ω
   S	↑	10 kΩ or higher
   Press continuously "-" (Down shift)	1 - 5	Below 1 Ω
   S	↑	10 kΩ or higher

NG	REPLACE TRANSMISSION CONTROL SWITCH

OK

4. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - ECM)

1. Connect the transmission control switch connector of shift lock control unit assembly.

2. Disconnect the ECM connector.

3. Turn the ignition switch on (IG) position, and measure the voltage according to the value(s) in the table below when the shift lever is moved to each position.

   Standard voltage:

   Shift Position	Tester Connection	Specified Condition
   S, "+" and "-"	A6-9 (S) - Body ground	10 to 14 V
   Except S, "+" and "-"	↑	Below 1 V

4. Turn the ignition switch off position.

5. Disconnect the ECM connector.

6. Measure the resistance according to the value(s) in the table below when the shift lever is moved to each position.

   Standard resistance:

   Shift Position	Tester Connection	Specified Condition
   Press continuously "+" (Up shift)	A6-30 (SFTU) - Body ground	Below 1 Ω
   S	↑	10 kΩ or higher
   Press continuously "-" (Down shift)	A6-19 (SFTD) - Body ground	Below 1 Ω
   S	↑	10 kΩ or higher

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE