DESCRIPTION
The side auto step controller ECU assembly receives the door open/closed signal from each door courtesy light switch via the side auto step switch assembly.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
HINT:
Inspection should be performed on the door courtesy switch circuit on the side where the automatic running board is malfunctioning.
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (SIDE AUTO STEP SWITCH - SIDE AUTO STEP CONTROLLER ECU) |
(a) Disconnect the F90 side auto step switch assembly connector.
(b) Disconnect the A42 side auto step controller ECU assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open):
for LH
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F90-4 (ECU1) - A42-14 (CTY1) |
Always |
Below 1 Ω |
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F90-6 (ECU2) - A42-13 (CTY2) |
Always |
Below 1 Ω |
Standard Resistance (Check for Short):
for LH
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A42-14 (CTY1) - Body ground |
Always |
10 kΩ or higher |
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A42-13 (CTY2) - Body ground |
Always |
10 kΩ or higher |
OK |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Steering Angle Sensor Power Source Voltage Malfunction (C1432)
DESCRIPTION
Steering angle sensor signals are sent to the skid control ECU via the CAN communication
system. When there is a malfunction in the CAN communication system, it is detected
by the steering angle sensor zero point malfunction diagnostic functio ...
PTC Heater Circuit
DESCRIPTION
PTC heater relays are closed in accordance with signals from the air conditioning
amplifier assembly and power is supplied to the quick heater assembly installed
on the radiator heater unit.
WIRING DIAGRAM
PROCEDURE
1.
...