Main Cruise Control Switch Circuit

WARNING: This page is about a different variant/trim than selected.

Remove Electronic Control Module (ECM) with harness connector attached. Turn ignition switch on. Measure voltage between ground and terminal No. 14 (Green wire) of ECM 28-pin harness connector "B" with switch in specified positions. See MAIN CRUISE CONTROL SWITCH CIRCUIT SPECIFICATIONS table. If voltage reading is not as specified, go to next step. If voltage reading is as specified, fault may be intermittent. If sent here from SYMPTOM TESTS , perform next test listed.

MAIN CRUISE CONTROL SWITCH SPECIFICATIONS

Switch Position	Volts
Off	7.5-14.0
On	0-1.5
RES/ACC	2.1-4.0
SET/COAST	4.0-7.1
CANCEL	6.0-10.1

Turn ignition off. Disable air bag system. See AIR BAG RESTRAINT SYSTEMS article. Remove steering wheel center pad (air bag module) and disconnect cruise control switch 6-pin connector. Check continuity between terminals No. 3 (Brown wire) and No. 5 (Green wire) of cruise control switch connector with switch in specified positions. See MAIN CRUISE CONTROL SWITCH CONTINUITY table. If resistance is as specified, go to next step. If resistance is not as specified, replace main cruise control switch and retest system.

MAIN CRUISE CONTROL SWITCH CONTINUITY

Switch Position	Resistance
Off	No Continuity
RES/ACC	210-270
SET/COAST	560-700
CANCEL	1380-1700

Check continuity of Green wire between terminal No. 14 of ECM 28-pin harness connector and terminal No. 5 of cruise control switch. Check continuity of Brown wire between terminal No. 3 of cruise control switch and ground (located on left side of firewall, near center). Repair as necessary and retest system. If wiring harness and connectors are okay, go to next step.
Replace ECM. If input signals are as specified, no problem is indicated at this time. Fault may be intermittent. If sent here from SYMPTOM TESTS , perform next test listed.