DTC detecting condition | Trouble area |
---|---|
Monitor signal of A/C condenser fan control relay is different from command signal.
(2 driving cycle detecting logic) |
•
A/C condenser fan control relay
• A/C condenser fan control relay circuit • ECM |
Step | Action | YES | NO |
---|---|---|---|
1 |
Was “Engine and Emission Control System Check” performed?
|
Go to Step 2.
|
|
2 |
A/C condenser fan control relay circuit check
1)
Check for proper connection to ECM at “E117-12” terminal with ignition switch turned OFF.
2)
Measure voltage between “E117-12” terminal of ECM connector and vehicle body ground under the following condition.
Voltage between “E117-12” terminal of ECM connector and vehicle body ground
While engine running, A/C switch and heater blower switch ON: 0 – 1 V
While engine running, A/C switch and heater blower switch OFF: 10 – 14 V
Is each voltage within specified value?
|
Intermittent trouble. Check for intermittent referring to
Intermittent and Poor Connection Inspection
.
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Go to Step 3.
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3 |
A/C condenser fan control relay power supply circuit check
2)
Check for proper connection to A/C condenser fan control relay at “LT GRN” and “PNK/BLK” wire terminals.
3)
If OK, measure voltage between “LT GRN” wire terminal of A/C condenser fan control relay connector and vehicle body ground with ignition switch turned ON.
Is voltage 10 – 14 V?
|
Go to Step 4.
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“LT GRN” and/or “RED/BLU” wire in open or high resistance circuit.
|
4 |
A/C condenser fan control relay circuit check
1)
Disconnect connectors from ECM with ignition switch turned OFF.
2)
Measure resistance between “E117-12” terminal of ECM connector and vehicle body ground.
Is resistance infinity?
|
Go to Step 5.
|
“PNK/BLK” wire shorted to ground circuit.
|
5 |
A/C condenser fan control relay check
1)
Check A/C condenser fan control relay referring to
Main Relay, Fuel Pump Relay, A/C Compressor Relay and A/C Condenser Fan Control Relay Inspection:M13A
.
Is check result satisfactory?
|
“PNK/BLK” wire in open circuit. If wire is OK, substitute a known-good ECM and recheck.
|
Replace A/C condenser fan control relay.
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