DESCRIPTION
This circuit provides power to the clearance warning ECU.
WIRING DIAGRAM

INSPECTION PROCEDURE
1 CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - AIR CONDITIONER AMPLIFIER)

Standard resistance

2 CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - BODY GROUND)

Standard resistance

3 INSPECT CLEARANCE WARNING ECU

Standard voltage: 10 to 14 V
Result

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
4 INSPECT PRINTED WIRE INTEGRATION BOARD SUB-ASSEMBLY
OK: Malfunction disappears
REPLACE PRINTED WIRE INTEGRATION BOARD SUB-ASSEMBLY
5 INSPECT INTEGRATION PANEL SUB-ASSEMBLY
OK: Malfunction disappears.
REPLACE INTEGRATION PANEL SUB-ASSEMBLY
No. 1 Clearance Warning Buzzer Circuit
No. 2 Clearance Warning Buzzer CircuitReassembly
1. INSTALL COOLER DRYER
(a) Using needle nose pliers, install the cooler dryer.
(b) Install a new O-ring on the cap.
(c) Sufficiently apply compressor oil to the fitting
surfaces of the O-ring and the cap.
Compressor oil:
ND-OIL 8 or equivalent
(d) Using a hexagon wrench 14 mm ( ...
Diagnostic trouble code chart
1. DTC CHECK
If a malfunction code is displayed during the DTC check ,
check the suspected area listed for that code in the table
below, and proceed to the appropriate page.
DIAGNOSTIC TROUBLE CODE CHART
DTC No.
Detection Item
Suspect Area
B1244
Light Se ...
Terminals of ECU
1. MULTIPLEX NETWORK GATEWAY ECU
Disconnect the G4 ECU connector.
Measure the voltage between the specified
terminals on the wire harness side connector.
If the result is not as specified, there may be a
malfunction on the wire harness side.
Measure the resistance between ...