Inspection Procedure

1. Check the battery positive voltage.

   Standard: 

   10 to 14 V 

1. NG: REPLACE BATTERY 
2. OK: Go To Next Step 

1. Remove the AIR SUS No. 2 fuse from the engine room R/B.
2. Check continuity of the AIR SUS No. 2 fuse.
   • Standard:  Continuity
   Fig 1: Checking Continuity Of Air SUS No. 2 Fuse

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: INSPECT FOR SHORT CIRCUIT IN ALL HARNESS AND COMPONENTS CONNECTED TO AIR SUS NO. 2 FUSE 
2. OK: Go To Next Step 

1. Remove the TEMS fuse from the driver side J/B.
2. Check continuity of the TEMS fuse.
   • Standard:  Continuity
   Fig 2: Checking Continuity Of TEMS Fuse

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: INSPECT FOR SHORT CIRCUIT IN ALL HARNESS AND COMPONENTS CONNECTED TO TEMS FUSE 
2. OK: Go To Next Step 

1. Remove the suspension control ECU with connectors being connected.
2. Turn the ignition switch ON, and measure voltage between terminal S19-6 (B) and S20-1 (GND) and between terminal S19-6 (B) and S19-5 (GND2) of the suspension control ECU connector.
   • Standard:  10 to 14 V
   Fig 3: Measuring Voltage Between Terminals S19-6 & S20-1 And S19-6 7 S19-5

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Turn the ignition switch ON, measure voltage between terminal S20-10 (IG) and S20-1 (GND) and between terminal S20-10 (IG) and S19-5 (GND2) of the suspension control ECU connector.
   • Standard:  10 to 14 V
   Fig 4: Measuring Voltage Between Terminals S20-10 & S20-1 And S20-10 & S19-5

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. OK: CHECK AND REPLACE SUSPENSION CONTROL ECU (See  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ) 
2. NG: Go To Next Step 

1. Disconnect the suspension control ECU connectors.
2. Turn the ignition switch ON, and check continuity between terminal S20-1 (GND) and body ground and between terminal S19-5 (GND2) and body ground.
   • Standard:  Continuity
   Fig 5: Checking Continuity Between Terminal S20-1 & Body Ground And S19-5 & Body Ground

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

• OK:

  Repair or replace the harness or the connector between the AIR SUS fuse and the suspension control ECU and/or the TEMS fuse and the suspension control ECU.

• NG:

  Repair or replace the harness or the connector between the suspension control ECU and body ground.

1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
2. OK: REPAIR OR REPLACE HARNESS OR CONNECTOR