DTC P0480:00 [L3 Turbo]

DTC P0480:00 [L3 Turbo]SM2444108

DTC P0480:00 [L3 Turbo]

id0102b7704600

DTC P0480:00	Fan control module No.1 control circuit malfunction
DETECTION CONDITION	• The PCM monitors the input voltage from the fan control module No.1. If the voltage remains low or high, the PCM determines that the fan control circuit has a malfunction. Diagnostic support note • This is a continuous monitor (other). • The MIL does not illuminate. • FREEZE FRAME DATA (Mode 2)/Snapshot data is not available. • DTCs are stored in the PCM memory.
POSSIBLE CAUSE	• Fan control module No.1 connector or terminals malfunction • Short to ground in wiring harness between fan control module No.1 terminal B and PCM terminal 1AE • PCM connector or terminals malfunction • Short to power supply in wiring harness between fan control module No.1 terminal B and PCM terminal 1AE • Open circuit in wiring harness between fan control module No.1 terminal B and PCM terminal 1AE • Fan control module No.1 malfunction • PCM malfunction

Diagnostic procedure

STEP	INSPECTION		ACTION
1	VERIFY RELATED SERVICE INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available?	Yes	Perform repair or diagnosis according to the available Service Information. • If the vehicle is not repaired, go to the next step.
1		No	Go to the next step.
2	INSPECT FAN CONTROL MODULE NO.1 CONNECTOR CONDITION • Turn the ignition switch off. • Disconnect the fan control module No.1 connector. • Inspect for poor connection (such as damaged/pulled-out pins, and corrosion). • Is there any malfunction?	Yes	Repair or replace the connector and/or terminals, then go to Step 8.
2		No	Go to the next step.
3	INSPECT FAN CONTROL MODULE NO.1 SIGNAL CIRCUIT FOR SHORT TO GROUND • Fan control module No.1 connector is disconnected. • Inspect for continuity between fan control module No.1 terminal B (wiring harness-side) and body ground. • Is there continuity?	Yes	If the short to ground circuit could be detected: • Repair or replace the wiring harness for a possible short to ground. If the short to ground circuit could not be detected: • Replace the PCM (short to ground in PCM internal circuit). (See PCM REMOVAL/INSTALLATION [L3 Turbo].) Go to Step 8.
3		No	Go to the next step.
4	INSPECT PCM CONNECTOR CONDITION • Disconnect the PCM connector. • Inspect for poor connection (such as damaged/pulled-out pins, and corrosion). • Is there any malfunction?	Yes	Repair or replace the connector and/or terminals, then go to Step 8.
4		No	Go to the next step.
5	INSPECT FAN CONTROL MODULE NO.1 SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY • Fan control module No.1 and PCM connectors are disconnected. • Turn the ignition switch to the ON position (engine off). • Measure the voltage at the fan control module No.1 terminal B (wiring harness-side). • Is there any voltage?	Yes	Repair or replace the wiring harness for a possible short to power supply, then go to Step 8.
5		No	Go to the next step.
6	INSPECT FAN CONTROL MODULE NO.1 SIGNAL CIRCUIT FOR OPEN CIRCUIT • Fan control module No.1 and PCM connectors are disconnected. • Turn the ignition switch off. • Inspect for continuity between fan control module No.1 terminal B (wiring harness-side) and PCM terminal 1AE (wiring harness-side). • Is there continuity?	Yes	Go to the next step.
6		No	Repair or replace the wiring harness for a possible open circuit, then go to Step 8.
7	INSPECT FAN CONTROL MODULE NO.1 • Perform the Cooling Fan Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 Turbo].) • Is there any malfunction?	Yes	Replace the fan control module No.1, then go to the next step. (See COOLING FAN MOTOR REMOVAL/INSTALLATION [L3 Turbo].)
7		No	Go to the next step.
8	VERIFY DTC TROUBLESHOOTING COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE [L3 Turbo].) • Start the engine. • Turn the A/C switch to ON. • Perform the KOEO or KOER self test. (See KOEO/KOER SELF TEST [L3 Turbo].) • Is the same DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [L3 Turbo].)
8		No	Go to the next step.
9	VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [L3 Turbo].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L3 Turbo].)
9		No	DTC troubleshooting completed.