RM36D0EC _52 Drivetrain _138176 K121 CVT _0584691 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM J

K121 CVT CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM Indicator Circuit

DESCRIPTION

In accordance with the shift lever position, each shift position indicator light will turn on.

WIRING DIAGRAM

0.031,0.698 1.417,1.104 1.385,0.406 10 false from ACC Relay 1.438,0.906 2.573,1.292 1.135,0.385 10 false ECU-IGR NO. 2 2.656,0.573 2.927,0.802 0.271,0.229 10 false 7 2.885,0.698 3.344,0.896 0.458,0.198 10 false PWR 3.896,0.729 4.052,0.927 0.156,0.198 10 false P 3.885,1.146 4.042,1.344 0.156,0.198 10 false R 3.885,1.583 4.042,1.802 0.156,0.219 10 false N 3.896,2.021 4.052,2.24 0.156,0.219 10 false D 3.906,2.448 4.063,2.667 0.156,0.219 10 false S 4.135,0.625 4.292,0.823 0.156,0.198 10 false 5 4.146,1.042 4.302,1.24 0.156,0.198 10 false 4 4.135,1.469 4.292,1.667 0.156,0.198 10 false 3 4.135,1.885 4.292,2.083 0.156,0.198 10 false 2 4.125,2.323 4.49,2.542 0.365,0.219 10 false 1 5.708,0.74 6.323,0.938 0.615,0.198 10 false INDP 5.698,1.156 6.313,1.354 0.615,0.198 10 false INDR 5.698,1.594 6.313,1.792 0.615,0.198 10 false INDN 5.688,2.01 6.302,2.208 0.615,0.198 10 false INDD 5.688,2.438 6.302,2.635 0.615,0.198 10 false INDB 5.427,0.625 5.74,0.823 0.313,0.198 10 false 77 5.427,1.031 5.74,1.229 0.313,0.198 10 false 76 5.427,1.479 5.74,1.677 0.313,0.198 10 false 75 5.427,1.885 5.74,2.083 0.313,0.198 10 false 74 5.438,2.323 5.75,2.521 0.313,0.198 10 false 73 5.635,2.917 6.25,3.115 0.615,0.198 10 false C71 2.833,2.938 4.042,3.146 1.208,0.208 10 false G73*1, G148*2 2.833,3.125 4.563,3.438 1.729,0.313 10 false Shift Position Indicator 5.635,3.125 6.094,3.51 0.458,0.385 10 false ECM 0.25,3.021 2.854,3.219 2.604,0.198 10 false *1: for SFTM Made 0.25,3.344 2.854,3.542 2.604,0.198 10 false *2: for GTMC Made

PROCEDURE

1.CHECK SHIFT POSITION INDICATOR

Turn the ignition switch to ON.

Check that each shift position indicator light turns on correctly.

Result:

Result	Proceed to
All shift position indicator lights turn on simultaneously	A
Shift position indicator lights other than corresponding one turns on	B
Corresponding shift position indicator light does not turn on	C
No shift position indicator lights turn on	D

Turn the ignition switch off.

2.CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT TO GROUND)

5.CHECK HARNESS AND CONNECTOR (SHIFT POSITION INDICATOR POWER SOURCE CIRCUIT)

2.CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT TO GROUND)

Disconnect the C71 ECM connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
C71-77 (INDP) - Body ground and other terminals	Always	10 kΩ or higher
C71-76 (INDR) - Body ground and other terminals	Always	10 kΩ or higher
C71-75 (INDN) - Body ground and other terminals	Always	10 kΩ or higher
C71-74 (INDD) - Body ground and other terminals	Always	10 kΩ or higher
C71-73 (INDB) - Body ground and other terminals	Always	10 kΩ or higher

Connect the C71 ECM connector.

Result:

Proceed to
OK
NG

3.REPLACE ECM

4.CHECK HARNESS AND CONNECTOR (ECM - SHIFT POSITION INDICATOR)

3.REPLACE ECM

HINT:: for M20C-FKS:; Click hereEngine / Hybrid System>M20C-FKS (ENGINE CONTROL)>ECM>REMOVAL202405,999999,_51,_087036,_0418140,RM100000002JM0N,; for M20D-FKS:; Click hereEngine / Hybrid System>M20D-FKS (ENGINE CONTROL)>ECM>REMOVAL202409,999999,_51,_083058,_0401822,RM100000002NRO9,

Result:

Proceed to
NEXT

PERFORM REGISTRATION AND INITIALIZATION

for Registration: Click hereDrivetrain>K121 (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>REGISTRATION202304,999999,_52,_138176,_0584691,RM1000000029HF6,

for Initialization: Click hereDrivetrain>K121 (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>INITIALIZATION202409,999999,_52,_138176,_0584691,RM100000002NRHB,

4.CHECK HARNESS AND CONNECTOR (ECM - SHIFT POSITION INDICATOR)

Disconnect the C71 ECM connector.

for SFTM Made:

Disconnect the G73 shift position indicator connector.

for GTMC Made:

Disconnect the G148 shift position indicator connector.

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

Standard Resistance (for SFTM Made):

Tester Connection	Condition	Specified Condition
C71-77 (INDP) or G73-5 (P) - Body ground and other terminals	Always	10 kΩ or higher
C71-76 (INDR) or G73-4 (R) - Body ground and other terminals	Always	10 kΩ or higher
C71-75 (INDN) or G73-3 (N) - Body ground and other terminals	Always	10 kΩ or higher
C71-74 (INDD) or G73-2 (D) - Body ground and other terminals	Always	10 kΩ or higher
C71-73 (INDB) or G73-1 (S) - Body ground and other terminals	Always	10 kΩ or higher

Standard Resistance (for GTMC Made):

Tester Connection	Condition	Specified Condition
C71-77 (INDP) or G148-5 (P) - Body ground and other terminals	Always	10 kΩ or higher
C71-76 (INDR) or G148-4 (R) - Body ground and other terminals	Always	10 kΩ or higher
C71-75 (INDN) or G148-3 (N) - Body ground and other terminals	Always	10 kΩ or higher
C71-74 (INDD) or G148-2 (D) - Body ground and other terminals	Always	10 kΩ or higher
C71-73 (INDB) or G148-1 (S) - Body ground and other terminals	Always	10 kΩ or higher

for SFTM Made:

Connect the G73 shift position indicator connector.

for GTMC Made:

Connect the G148 shift position indicator connector.

Connect the C71 ECM connector.

Result:

Proceed to
OK
NG

REPLACE SHIFT POSITION INDICATOR

Click hereDrivetrain>K121 (CVT)>SHIFT LEVER>DISASSEMBLY202304,999999,_52,_138176,_0579406,RM1000000029ENP,

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.CHECK HARNESS AND CONNECTOR (SHIFT POSITION INDICATOR POWER SOURCE CIRCUIT)

for SFTM Made:

Disconnect the G73 shift position indicator connector.

for GTMC Made:

Disconnect the G148 shift position indicator connector.

Turn the ignition switch to ON.

1.104,0.146 1.625,0.406 0.521,0.26 1.708,0.146 2.313,0.406 0.604,0.26 0.896,1.698 1.51,1.333 true 0.156,0.115 0.469,0.313 0.313,0.198 10 false *a 1.167,0.198 1.615,0.427 0.448,0.229 10 false G73*A 0.594,1.75 1.042,2.021 0.448,0.271 10 false PWR 1.771,0.198 2.354,0.427 0.583,0.229 10 false G148*B

*A	for SFTM Made
*B	for GTMC Made
*a	Front view of wire harness connector (to Shift Position Indicator)

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

Standard Voltage (for SFTM Made):

Tester Connection	Condition	Specified Condition
G73-7 (PWR) - Body ground	Ignition switch ON	11 to 14 V

Standard Voltage (for GTMC Made):

Tester Connection	Condition	Specified Condition
G148-7 (PWR) - Body ground	Ignition switch ON	11 to 14 V

Turn the ignition switch off.

for SFTM Made:

Connect the G73 shift position indicator connector.

for GTMC Made:

Connect the G148 shift position indicator connector.

Result:

Proceed to
OK
NG

6.CHECK HARNESS AND CONNECTOR (CHECK FOR OPEN)

REPAIR OR REPLACE POWER SOURCE CIRCUIT

6.CHECK HARNESS AND CONNECTOR (CHECK FOR OPEN)

Disconnect the C71 ECM connector.

Turn the ignition switch to ON.

1.427,0.073 1.833,0.323 0.406,0.25 0.833,0.333 1.49,1.042 true 2.177,1.917 1.677,1.063 true 1.552,1.042 1.25,0.333 true 1.656,1.927 1.615,1.063 true 1.167,1.917 1.406,1.042 true 0.146,0.135 0.458,0.333 0.313,0.198 10 false *a 1.552,1.938 1.969,2.125 0.417,0.188 10 false INDR 2.052,1.948 2.469,2.135 0.417,0.188 10 false INDP 1.5,0.115 1.802,0.292 0.302,0.177 10 false C71 0.542,0.156 0.958,0.344 0.417,0.188 10 false INDD 0.958,1.938 1.375,2.125 0.417,0.188 10 false INDB 1,0.156 1.417,0.344 0.417,0.188 10 false INDN

*a	Front view of wire harness connector (to ECM)

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
C71-77 (INDP) - Body ground and other terminals	Ignition switch ON	11 to 14 V
C71-76 (INDR) - Body ground and other terminals	Ignition switch ON	11 to 14 V
C71-75 (INDN) - Body ground and other terminals	Ignition switch ON	11 to 14 V
C71-74 (INDD) - Body ground and other terminals	Ignition switch ON	11 to 14 V
C71-73 (INDB) - Body ground and other terminals	Ignition switch ON	11 to 14 V

Turn the ignition switch off.

Connect the C71 ECM connector.

Result:

Proceed to
OK
NG

7.REPLACE ECM

8.CHECK HARNESS AND CONNECTOR (ECM - SHIFT POSITION INDICATOR)

7.REPLACE ECM

HINT:: for M20C-FKS:; Click hereEngine / Hybrid System>M20C-FKS (ENGINE CONTROL)>ECM>REMOVAL202405,999999,_51,_087036,_0418140,RM100000002JM0N,; for M20D-FKS:; Click hereEngine / Hybrid System>M20D-FKS (ENGINE CONTROL)>ECM>REMOVAL202409,999999,_51,_083058,_0401822,RM100000002NRO9,

Result:

Proceed to
NEXT

PERFORM REGISTRATION AND INITIALIZATION

for Registration: Click hereDrivetrain>K121 (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>REGISTRATION202304,999999,_52,_138176,_0584691,RM1000000029HF6,

for Initialization: Click hereDrivetrain>K121 (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>INITIALIZATION202409,999999,_52,_138176,_0584691,RM100000002NRHB,

8.CHECK HARNESS AND CONNECTOR (ECM - SHIFT POSITION INDICATOR)

Disconnect the C71 ECM connector.

for SFTM Made:

Disconnect the G73 shift position indicator connector.

for GTMC Made:

Disconnect the G148 shift position indicator connector.

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

Standard Resistance (for SFTM Made):

Tester Connection	Condition	Specified Condition
C71-77 (INDP) - G73-5 (P)	Always	Below 1 Ω
C71-76 (INDR) - G73-4 (R)	Always	Below 1 Ω
C71-75 (INDN) - G73-3 (N)	Always	Below 1 Ω
C71-74 (INDD) - G73-2 (D)	Always	Below 1 Ω
C71-73 (INDB) - G73-1 (S)	Always	Below 1 Ω

Standard Resistance (for GTMC Made):

Tester Connection	Condition	Specified Condition
C71-77 (INDP) - G148-5 (P)	Always	Below 1 Ω
C71-76 (INDR) - G148-4 (R)	Always	Below 1 Ω
C71-75 (INDN) - G148-3 (N)	Always	Below 1 Ω
C71-74 (INDD) - G148-2 (D)	Always	Below 1 Ω
C71-73 (INDB) - G148-1 (S)	Always	Below 1 Ω

for SFTM Made:

Connect the G73 shift position indicator connector.

for GTMC Made:

Connect the G148 shift position indicator connector.

Connect the C71 ECM connector.

Result:

Proceed to
OK
NG

REPLACE SHIFT POSITION INDICATOR

Click hereDrivetrain>K121 (CVT)>SHIFT LEVER>DISASSEMBLY202304,999999,_52,_138176,_0579406,RM1000000029ENP,

REPAIR OR REPLACE HARNESS OR CONNECTOR