The hybrid vehicle control ECU controls the back-up lights via the BKUP LP relay.
The ECM controls the back-up lights via the BKUP LP relay.
for HV Model
for Gasoline Model
Inspect the fuses for circuits related to this system before performing the following procedure.
Before replacing the hybrid vehicle control ECU, refer to Service Bulletin.*1
Before replacing the ECM, refer to Service Bulletin.*2
*1: for HV Model
*2: for Gasoline Model
Choose the model to be inspected.
| Result | Proceed to |
|---|---|
| for HV Model | A |
| for Gasoline Model | B |
A
B
Check if hybrid control system DTCs are output.
| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| DTCs are output | B |
A
B
Disconnect the 10F power distribution box assembly connector.
Disconnect the I3 hybrid vehicle control ECU connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I3-24 (BL) - 10F-27 | Always | Below 1 Ω |
| I3-24 (BL) or 10F-27 - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 10F-27 - Body ground | Ignition switch ON, shift lever not in R | Below 1 V |
| 10F-27 - Body ground | Ignition switch on (IG), shift lever in R | 11 to 14 V |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component with harness connected
(Power Distribution Box Assembly) |
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 10G-13 - Body ground | Ignition switch ON, shift lever not in R | Below 1 V |
| 10G-13 - Body ground | Ignition switch ON, shift lever in R | 11 to 14 V |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Check if SFI system DTCs are output.
| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| DTCs are output | B |
A
B
for M15B-FKS: Click hereEngine / Hybrid System>M15B-FKS (ENGINE CONTROL)>SFI SYSTEM>DIAGNOSTIC TROUBLE CODE CHART202304,999999,_51,_096196,_0456237,RM100000002BAMI,
for M15C-FKS: Click hereEngine / Hybrid System>M15C-FKS (ENGINE CONTROL)>SFI SYSTEM>DIAGNOSTIC TROUBLE CODE CHART202304,999999,_51,_096205,_0456238,RM100000002BG0F,
for M20A-FKS: Click hereEngine / Hybrid System>M20A-FKS (ENGINE CONTROL)>SFI SYSTEM>DIAGNOSTIC TROUBLE CODE CHART202304,999999,_51,_101144,_0469422,RM100000002BDZM,
for M20C-FKS: Click hereEngine / Hybrid System>M20C-FKS (ENGINE CONTROL)>SFI SYSTEM>DIAGNOSTIC TROUBLE CODE CHART202304,999999,_51,_105190,_0484152,RM100000002BG1R,
for M20E-FKS: Click hereEngine / Hybrid System>M20E-FKS (ENGINE CONTROL)>SFI SYSTEM>DIAGNOSTIC TROUBLE CODE CHART202304,999999,_51,_101153,_0478272,RM100000002BG35,
Disconnect the 10A power distribution box assembly connector.
Disconnect the A142 ECM connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A142-82 (BL) - 10A-17 | Always | Below 1 Ω |
| A142-82 (BL) or 10A-17 - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component with harness connected
(Power Distribution Box Assembly) |
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 10A-17 - Body ground | Ignition switch ON, shift lever not in R | Below 1 V |
| 10A-17 - Body ground | Ignition switch on (IG), shift lever in R | 11 to 14 V |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
for M15B-FKS: Click hereEngine / Hybrid System>M15B-FKS (ENGINE CONTROL)>ECM>REMOVAL202304,999999,_51,_096196,_0456246,RM100000002AYLB,
for M15C-FKS: Click hereEngine / Hybrid System>M15C-FKS (ENGINE CONTROL)>ECM>REMOVAL202304,999999,_51,_096205,_0456262,RM100000002AYLC,
for M20A-FKS: Click hereEngine / Hybrid System>M20A-FKS (ENGINE CONTROL)>ECM>REMOVAL202304,999999,_51,_101144,_0470279,RM100000002AYL8,
for M20C-FKS: Click hereEngine / Hybrid System>M20C-FKS (ENGINE CONTROL)>ECM>REMOVAL202304,999999,_51,_105190,_0481177,RM100000002AYL9,
for M20E-FKS: Click hereEngine / Hybrid System>M20E-FKS (ENGINE CONTROL)>ECM>REMOVAL202304,999999,_51,_101153,_0477097,RM100000002AYLA,
| *a | Component with harness connected
(Power Distribution Box Assembly) |
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 10G-13 - Body ground | Ignition switch ON, shift lever not in R | Below 1 V |
| 10G-13 - Body ground | Ignition switch ON, shift lever in R | 11 to 14 V |
| Proceed to |
|---|
| OK |
| NG |
OK
NG