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FI
FUEL INJECTION SYSTEM
Symptom Fan does not operate.
Probable mal-
function area
• Malfunction in radiator fan motor relay
• Malfunction in fan
• Open or short circuit in fan wiring harness
Inspection method 1
Inspection by diagnosis mode
Inspection method 2
Inspection of a malfunction that cannot be identified in the
diagnosis mode, and in case the area of the malfunction has
been narrowed down in the inspection method 1 given on the
left.
• Execute diagnostic code No. 51.
(Check the operation of the radiator fan motor
relay.)
(Check the operation of the fan motor.)
* Classify the malfunctions:
Malfunction related to the relay
Malfunction related to the wiring harness
Malfunction in the fan itself
• Relay does not operate.
Check the radiator fan motor relay.
Refer to “COOLING SYSTEM” in chapter 8.
Defective: replace
Inspect the wiring harness and couplers for continuity.
Defective: repair or replace
Replace
• Relay operates but fan does not operate.
Inspect the fan.
Refer to “COOLING SYSTEM” in chapter 8.
Defective: replace
Check the continuity at the contact point of the radiator fan
motor relay.
Refer to “COOLING SYSTEM” in chapter 8.
Defective: replace
Inspect the wiring harness and couplers for continuity.
Defective: repair or replace
• Normal according to the diagnosis mode
Inspect the coolant temperature sensor (by executing diag-
nostic code No. 06).
Refer to “COOLING SYSTEM” in chapter 8.
Defective: replace
Symptom Clock LCD displays “Er-1”. (No signals are received from the ECU.)
Probable mal-
function area
• Open or short circuit in communication line
• Malfunction in meter
• Malfunction in ECU
Inspection method 1
Inspection by diagnosis mode
Inspection method 2
Inspection of a malfunction that cannot be identified in the
diagnosis mode, and in case the area of the malfunction has
been narrowed down in the inspection method 1 given on the
left.
• Inspect ECU coupler
Inspect the wiring harness and couplers for continuity.
Defective: repair or replace
• Inspect meter coupler
Inspect the wiring harness and couplers for continuity.
Defective: repair or replace
