CRUISE CONTROL SYSTEM - TC and CG Terminal Circuit

DESCRIPTION

Connecting terminals TC and CG of the DLC3 causes the system to enter self-diagnostic mode. If a malfunction is present, DTCs will be output.

When a particular warning light remains blinking, a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in the relevant ECU is suspected.

Cruise Control System - Tc And Cg Terminal Circuit. CRUISE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

1.CHECK HARNESS AND CONNECTOR (DLC3 - ECM AND BODY GROUND)

Disconnect the A38*1 or A52*2 ECM connector.

*1: for LHD

*2: for RHD

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
for 1GR-FE LHD, 1UR-FE LHD, 3UR-FE LHD
Tester Connection Condition Specified Condition
E22-13 (TC) - A38-16 (TC) Always Below 1 Ω
E22-4 (CG) - Body ground
E22-13 (TC) - Body ground Always 10 kΩ or higher
for 1GR-FE RHD, 1UR-FE RHD
Tester Connection Condition Specified Condition
E22-13 (TC) - A52-16 (TC) Always Below 1 Ω
E22-4 (CG) - Body ground
E22-13 (TC) - Body ground Always 10 kΩ or higher
for 1VD-FTV LHD
Tester Connection Condition Specified Condition
E22-13 (TC) - A38-27 (TC) Always Below 1 Ω
E22-4 (CG) - Body ground
E22-13 (TC) - Body ground Always 10 kΩ or higher
for 1VD-FTV RHD
Tester Connection Condition Specified Condition
E22-13 (TC) - A52-27 (TC) Always Below 1 Ω
E22-4 (CG) - Body ground
E22-13 (TC) - Body ground Always 10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE ()