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DTC P0480 [AJ] (VIN: JMZ LW19J7*# 300001-, JM0 LW10J300 300001-301405, JM6 LW10J300 300001-, JM8 LW28J**# 300001-301513)

BME010200400206

DTC P0480 | Fan control circuit malfunction
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DETECTION CONDITION | • PCM monitors input voltages from fan control module. If voltage at PCM terminal 44 remains low or high, PCM determines that fan control circuit has malfunction. Diagnostic support note • This is an continuous monitor (other). • MIL does not come on.
• FREEZE FRAME DATA is not available.
• DTC is stored in the PCM memory.
POSSIBLE CAUSE | • Connector or terminal malfunction • Short to power circuit between fan control module terminal B and PCM terminal 44 • Short to ground in wiring between fan control module terminal B and PCM terminal 44 • Open circuit in wiring between fan control module terminal B and PCM terminal 44
• Fan control module malfunction
• PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | VERIFY RELATED SERVICE INFORMATION AVAILABILITY • Check for related Service Information availability. • Is any related Service Information available? | Yes | Perform repair or diagnosis according to available Service Information. • If vehicle is not repaired, go to the next step.
No | Go to the next step.
2 | INSPECT FAN CONTROL MODULE CONNECTOR FOR POOR CONNECTION • Turn the ignition switch off. • Disconnect fan control module connector. • Inspect for poor connection (damaged/pulled-out pins, corrosion, etc.). • Is there malfunction? | Yes | Repair or replace terminal, then go to Step 8.
No | Go to the next step.
3 | INSPECT FAN CONTROL MODULE SIGNAL CIRCUIT FOR SHORT TO POWER • Turn the ignition switch to the ON position (Engine off). • Measure the voltage between fan control module connector terminal B and body ground. • Is the voltage B+? | Yes | Repair or replace the wiring harness for open circuit, then go to Step 8.
No | Go to the next step.
4 | INSPECT FAN CONTROL MODULE SIGNAL CIRCUIT FOR SHORT TO GROUND • Turn the ignition switch off. • Inspect for continuity between fan control module terminal B and body ground. • Is there continuity? | Yes | Repair or replace the wiring harness for open circuit, then go to Step 8.
No | Go to the next step.
5 | INSPECT PCM CONNECTOR FOR POOR CONNECTION • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there malfunction? | Yes | Repair or replace the terminal, then go to Step 8.
No | Go to the next step.
6 | INSPECT FAN CONTROL MODULE SIGNAL CIRCUIT FOR OPEN CIRCUIT • Inspect for continuity between fan control module terminal B and PCM terminal 44. • Is there continuity? | Yes | Go to the next step.
No | Repair or replace the wiring harness for open circuit, then go to Step 8.
7 | INSPECT FAN CONTROL MODULE • Perform fan control module inspection. • Is the fan control module normal? | Yes | Go to the next step.
No | Replace the fan control module, then go to the next step.
8 | VERIFY TROUBLESHOOTING OF DTC P0480 COMPLETED • Make sure to reconnect all disconnected connectors. • Turn the ignition switch off then start engine. • Is the PENDING CODE of same DTC present? | Yes | Replace the PCM, then go to the next step.
No | Go to the next step.
9 | VERIFY AFTER REPAIR PROCEDURE • Perform "After Repair Procedure". (See AFTER REPAIR PROCEDURE [AJ].) • Is there any DTC present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [AJ] (VIN: JMZ LW19J7*# 300001-, JM0 LW10J300 300001-301405, JM6 LW10J300 300001-, JM8 LW28J**# 300001-301513).)
No | Troubleshooting completed.