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Home >> Toyota >> 1995 >> Corolla Base, Standard >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Circuit Testing >> Test 5, Cruise On-Off (Main) Switch Circuit

Test 5, Cruise On-Off (Main) Switch Circuit

  1. Perform SET/COAST, RES/ACC, and CANCEL tests under CRUISE CONTROL CIRCUIT FUNCTION TEST  under TROUBLE SHOOTING. If SET/COAST, RES/ACC or CANCEL input signals are as specified, go to test for next trouble code displayed or appropriate TROUBLE SHOOTING BY SYMPTOM . If input signals are not as specified, go to next step.
  2. Remove CC ECU with connector connected. Turn ignition on, backprobe CC ECU connector and measure voltage between CC ECU connector terminal No. 18/CCS (Green/Black wire) and ground with switch in specified positions. See CC ECU TO CRUISE ON-OFF (MAIN) SWITCH VOLTAGE  table. If voltage is as specified, go to test for next trouble code displayed or appropriate TROUBLE SHOOTING BY SYMPTOM . If voltage is not as specified, go to next step.
    CC ECU TO CRUISE ON-OFF (MAIN) SWITCH VOLTAGE

    Switch Position Voltage
    Off 10-14
    RES/ACC On 0.7-2.5
    SET/COAST On 2.3-4.6
    CANCEL On 4.1-7.2
  3. Turn ignition off. Disable SRS and wait 90 seconds. For 1995 Corolla, see AIR BAG RESTRAINT SYSTEM , for 1996 Corolla, see AIR BAG RESTRAINT SYSTEM article in ACCESSORIES & EQUIPMENT. Remove steering wheel center pad and disconnect CRUISE ON-OFF (MAIN) switch 6-pin connector. Measure resistance between 6-pin connector terminal No. 3 (Green/Black wire) and terminal No. 4 (White/Black wire) with switch in specified positions. See CRUISE ON-OFF (MAIN) SWITCH RESISTANCE  table. If resistance is as specified, go to next step. If resistance is not as specified, replace CRUISE ON-OFF (MAIN) switch.
    NOTE: When Code 34 is displayed, ensure resistance is one megohm or greater when switch is in OFF position, especially when switching from RES/ACC position to SET/COAST position.
    CRUISE ON-OFF (MAIN) SWITCH RESISTANCE

    Application & Switch Position Resistance (Ohms)
    Off One Megohm Or Greater
    RES/ACC On About 68
    SET/COAST On About 198
    CANCEL On About 418
  4. Check harness and connectors between CC ECU and CRUISE ON-OFF (MAIN) switch. Repair or replace as necessary. If harness and connectors are okay, replace CC ECU and retest system.
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