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Steering System - Electronic Power: Testing: Computer

Raise vehicle and support on chassis stands. Remove glove box or console. DO NOT disconnect computer. Start engine. Using a voltmeter, check that there is no voltage between computer terminals "SOL +" and "SOL-" with engine idling. Place transmission in gear and raise vehicle speed to test specification. If voltage is not to specification, replace computer.

COMPUTER VOLTAGE SPECIFICATIONS

Application Vehicle Speed MPH (KPH) Voltage
Cressida
"SOL(-)"-to-"Ground" 31 (50) 0.16±0.02
"SOL(-)"-to-"Ground" 62 (100) 0.32±0.04
Pickup & 4Runner
"SOL(-)"-to-"Ground" 31 (50) 3.12±1
Fig 1: Testing Computer
G59110Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002