ELECTRONIC CONTROL SYSTEM TROUBLESHOOTING FLOW–CHART Trouble Symptom • Hard steering at idle or low–speed driving. • Steering too sensitive during high–speed driving. Preliminary Check • Check tire pressure. • Check lubrication of suspension and steering linkage. • Check front wheel alignment. • Check steering system joint and suspension arm ball joint. • Check for bent steering column. • Check that all connectors are secure. • Check PS pump fluid pressure. (See page SR–37) Turn ignition switch on. Is ECU–IG fuse normal? No → Replace fuse. Is operation normal? No → Short circuit in wire harness between fuse and ECU terminal +B. Yes → Fuse faulty. Yes ↓ Disconnect the ECU connector. Check 1. Check that there is battery voltage (10 — 14V) between the ECU terminal +B and body ground. R07582 Yes No ↓ Open circuit in wire harness between the fuse and ECU terminal +B. CONTINUED ON NEXT PAGE