Inspection Procedure

CHECK BATTERY
1. Start the engine.
2. Check the battery positive voltage.
  Standard voltage:
  
  10 to 16 V
NG: CHECK AND REPAIR CHARGING SYSTEM

OK: GO TO NEXT STEP
CHECK SUSPENSION CONTROL ECU (IG - BODY GROUND)
1. Remove the suspension control ECU with connectors still connected.
2. Turn the ignition switch ON.
3. Measure the voltage between terminal IG of the suspension control ECU and body ground.
  Standard voltage:
  
  9 to 14 V
NG: Go to step 4

Fig 1: Measuring Voltage Between Terminal IG Of Suspension Control ECU & Body Ground
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: GO TO NEXT STEP
CHECK SUSPENSION CONTROL ECU (GND - BODY GROUND)
1. Remove the suspension control ECU with connectors still connected.
2. Measure the resistance between terminal GND of the suspension control ECU and body ground.
  Standard resistance:
  
  Below 1Ω
OK: REPLACE SUSPENSION CONTROL ECU

Fig 2: Measuring Resistance Between Terminal GND Of Suspension Control ECU & Body Ground
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: GO TO NEXT STEP
INSPECT FUSE (AHC - IG)
1. Remove the AHC-IG fuse from the cowl side junction bock LH.
2. Measure the resistance of the fuse.
  Standard resistance:
  
  Below 1Ω
NG: REPLACE FUSE

Fig 3: Locating AHC-IG Fuse From Cowl Side Junction Bock LH
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: GO TO NEXT STEP
CHECK WIRE HARNESS (SUSPENSION CONTROL ECU - BATTERY)
NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: REPLACE SUSPENSION CONTROL ECU