Toyota 4Runner: Diagnosis System
DIAGNOSIS SYSTEM
1. CHECK DLC3
(a) Check the DLC3 (See page .gif)
).
2. FUNCTION OF POWER STEERING WARNING LIGHT
(a) When a malfunction is detected in the power steering system, the power steering warning light in the combination meter comes on to inform the driver of the malfunction.
HINT:
When power assist is stopped or reduced, the power steering warning light comes on.
Power assist is stopped:
- When a malfunction occurs in the power steering system (including lost CAN communication, etc.)
- When the engine stalls (not a malfunction)
Power assist is reduced:
When a malfunction occurs in the power steering system (including lost CAN communication, etc.)
Terminals Of Ecu
TERMINALS OF ECU
1. CHECK POWER STEERING ECU ASSEMBLY
(a) Measure the voltage and resistance according to the value(s) in the table
below.
Terminal No. (Symbol)
Wiring Col ...
Dtc Check / Clear
DTC CHECK / CLEAR
1. CHECK DTC
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Turn the Techstream on.
(e) Enter the following m ...
Other materials about Toyota 4Runner:
Occupant Classification Sensor Power Supply Circuit Malfunction (B1793)
DESCRIPTION
The occupant classification sensor power supply circuit consists of the occupant
classification ECU and occupant classification sensors.
DTC B1793 is stored when a malfunction is detected in the occupant classification
sensor power supply cir ...
Transmitter Battery(w/ Smart Key System)
Replacement
REPLACEMENT
CAUTION / NOTICE / HINT
NOTICE:
Take extra care when handling these precision electronic components.
PROCEDURE
1. REMOVE TRANSMITTER BATTERY
(a) Push the release hook knob and extract the emergency key.
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