Test 3: Control Switch Circuit

NOTE: Ensure main switch and control switch operations are normal. See COMPONENT TESTING .

Disconnect control switch connector (20-pin). Ensure continuity exists between ground and control switch connector terminal No. 20 (Brown wire). If continuity is present, go to step 3). If continuity is not present, repair faulty ground or open in circuit between ground and control switch ground terminal.

Disconnect CC ECU connector. Ensure continuity exists between main switch connector terminal and ground terminal or resistance between control switch connector terminal and ground terminal at specified switch positions. See CRUISE CONTROL SWITCH TERMINALS and CRUISE CONTROL SWITCH TESTING tables. Replace cruise control switch if results are not as specified. If results are as specified, go to next step.

CRUISE CONTROL SWITCH TERMINALS

Main Switch Terminal (Wire Color)	Control Switch Terminal (Wire Color)	Ground Terminal (Wire Color)
15 (YEL/RED)	5 (BLK/RED)	20 (BRN)

CRUISE CONTROL SWITCH TESTING

Switch Position	Result
Main OFF	No Continuity
Main ON	Continuity
Control OFF	No Continuity
Control RES/ACC	Approximately 68 Ohms
Control SET/COAST	Approximately 198 Ohms
Control CANCEL	Approximately 418 Ohms

SLIP RING TESTING

5-Pin Slip Ring Terminal No.	6-Pin Slip Ring Terminal No.
2	6
3	4
4	5

Turn ignition off and connect control switch connector. Disconnect CC ECU connector(s). Turn CRUISE ON-OFF (MAIN) switch to OFF position and ensure no continuity exists between ground and CC ECU harness side connector terminal. See CC ECU-TO-CRUISE ON-OFF (MAIN) SWITCH HARNESS TESTING table. If continuity is not present, go to next step. If continuity is present, repair short in circuit between CC ECU terminal and control switch terminal.

If continuity is not present, turn CRUISE ON-OFF (MAIN) switch to ON position and ensure continuity exists between ground and CC ECU connector terminal. If continuity is not present, repair open in circuit between CC ECU terminal and control switch terminal. See CC ECU-TO-CRUISE ON-OFF (MAIN) SWITCH HARNESS TESTING table. If continuity is present, go to next step.

CC ECU-TO-CRUISE ON-OFF (MAIN) SWITCH HARNESS TESTING

CC ECU Terminal	Control Switch Terminal
4 (YEL/RED)	15 (YEL/RED)

Turn control switch to OFF position and ensure no continuity exists between ground and CC ECU harness side connector terminal. See CC ECU-TO-CRUISE ON-OFF (MAIN) SWITCH HARNESS TESTING table. If continuity is present, repair short in circuit between CC ECU terminal and control switch terminal.
Turn control switch to 3 operating positions. Measure resistance between ground and CC ECU terminal at each switch position. See CC ECU-TO-CONTROL SWITCH HARNESS TESTING table. If resistance is not as specified, repair open in harness between CC ECU terminal and control switch terminal. If resistance is as specified, replace cruise control switch.

CC ECU-TO-CONTROL SWITCH HARNESS TESTING

CC ECU Terminal	Control Switch Terminal
18 (BLK/GRN)	5 (BLK/GRN)