Inspection Procedure

WARNING: This page is about a different car, the 2002 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

Check voltage between terminal CCS of ECM connector and body ground .
PREPARATION:
1. Remove the ECM with connector being connected.
2. Turn the ignition switch on.
CHECK:

Measure the voltage between terminals CCS of the ECM connector and the body ground when each control switch is operated.

Fig 1: ECM Terminal CCS Specifications Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Locating ECM Terminal CCS
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: Proceed to next circuit inspection shown in problem symptoms table. See PROBLEM SYMPTOMS .
2. OK: Go to next step .
Check control switch continuity .
PREPARATION:
1. Remove the steering wheel center pad.
2. Disconnect the control switch connector.
CHECK:

Measure the resistance between terminals 4 and 5 of the control switch connector when the control switch is operated.

Fig 3: Cruise Control Switch Position Specifications Chart Terminal 4 To 5
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 4: Locating Cruise Control Switch Terminals 4 & 5
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: Replace control switch .
2. OK: Go to next step .
Check harness and connector between ECM and cruise control switch, and cruise control switch and body ground.
1. NG: Repair or replace harness or connector .
2. OK: Go to next step .
Check cruise control indicator light. See COMBINATION METER .
1. NG: Replace combination meter .
2. OK: Check and replace ECM .