TC and CG Terminal Circuit

CRUISE CONTROL SYSTEM: TC and CG Terminal Circuit

TC and CG Terminal Circuit

DESCRIPTION

The DLC3 circuit enables reading of Diagnostic Trouble Codes (DTCs) with no intelligent testers by connecting terminals TC and CG of the DLC3 connector.
Stored DTCs are displayed in blinking patterns of the CRUISE MAIN indicator light located on the combination meter.

WIRING DIAGRAM





HINT: When a particular warning light blinks continuously, a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in the relevant ECU is suspected.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (TC of DLC3 - ECM)





(a) Turn the ignition switch off.
(b) 1GR-FE:
Disconnect the E8 connector of the ECM.
(c) 2TR-FE:
Disconnect the E7 connector of the ECM.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance (1GR-FE):





Standard Resistance (2TR-FE):





(e) Reconnect the ECM connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (TC of DLC3 - ECM)
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (TC of DLC3 - BODY GROUND)





(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (TC CIRCUIT)
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (CG of DLC3 - BODY GROUND)





(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (CG of DLC3 - BODY GROUND)
OK -- REPLACE ECM