9-89
C0520
• Short circuit check
Disconnect the ECU related connectors before checking.
Refer to “PARTS CONNECTED TO THE ECU” on page 9-4.
Ground short circuit check “A”
Between ignition fuse 1 “4” coupler and IMU
coupler “3”
red/white–red/white
Between IMU coupler “3” and joint coupler “2”
blue/white–blue/white
blue/black–blue/black
Between IMU coupler “3” and joint coupler “2”
blue/white–blue/white
blue/black–blue/black
Between IMU coupler “3” and ground black/white–ground
Gy
LLVP
P/WLg/LO/WY/LL/B
B/LB/LBr/WGy/GG/LBr/LB/YL/W
W/YW/GG/WG/WLg/BL/WL/Y
R/WL/BL/WB/W
L/W
WW
L/W
BB
L/B L/B Y/B Y/B
L/R L/R L/RL/RB/L
B
B/L
BBBBB
Gy
LLVP
P/WLg/LY/LL/B
B/LB/LBr/WGy/GG/LB/YL/W
W/YW/GG/WG/WL/WL/Y
1
*
1
**
4
3
2
*. MTN890
**. MTN890D
Is resistance 0 Ω?
YES
→ Go to “Short circuit check”.
NO
a. Replace the wire harness.
b. Turn the main switch to “ON”, and then check the condition of the DTC using the malfunction
mode of the YDT.
Is it in the “Recovered” condition?
YES
→ Go to step 7, and complete the service.
NO
→ Go to “Short circuit check”.
Between ECU coupler “1” and ground
blue/black–ground
blue/white–ground
Between IMU coupler “3” and ground
blue/black–ground
blue/white–ground
red/white–ground
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