TERMINALS OF ECU
1. CHECK MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)
(a) Disconnect the 2F and 2C driver side junction block connectors.
(b) Disconnect the D50 and D51 main body ECU connectors.
(c) Measure the resistance and voltage according to the value(s) in the table below.
HINT:
Measure the values on the wire harness side with the connector disconnected.
Tester Connection |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
2F-16 (GND1) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
2C-30 (ALTB) - Body ground |
BR - Body ground |
Battery power supply |
Always |
11 to 14 V |
D50-24 (DCTY) - Body ground |
V - Body ground |
Driver door courtesy light switch signal |
Switch pushed (Door closed) |
10 kΩ or higher |
D50-24 (DCTY) - Body ground |
V - Body ground |
Driver door courtesy light switch signal |
Switch free (Door open) |
Below 1 Ω |
D51-5 (KSW) - Body ground |
L - Body ground |
Unlock warning switch signal |
No key is in ignition key cylinder |
10 kΩ or higher |
D51-5 (KSW) - Body ground |
L - Body ground |
Unlock warning switch signal |
Key is in ignition key cylinder |
Below 1 Ω |
If the result is not as specified, there may be a malfunction on the wire harness side.
IG Power Supply Voltage Malfunction (C1551)
DESCRIPTION
The power steering ECU distinguishes the ignition switch status as ON or off
through the IG power source circuit.
DTC No.
DTC Detection Condition
Trouble Area
C1551
IG power source ci ...
Starter Signal Circuit
DESCRIPTION
1. w/o Smart Key System
While the engine is being cranked, current flows from terminal ST1 of the ignition
switch assembly to the park/neutral position switch assembly and also flows to terminal
STA of the ECM (STA Signal).
2. w/ Smart Key S ...
Reverse Shift-linked Function of Power Mirrors does not Operate
SYSTEM DESCRIPTION
On receiving a reverse signal from the park/neutral position switch assembly,
the ECM sends the reverse signal to the main body ECU (driver side junction block
assembly) via CAN communication. When receiving the reverse signal, the main ...