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DTC P0480 [AJ] (VIN: JM0 LW10J300 301406-, JMZ LW69J7*# 307683-, JM8 LW28J**# 301514-, JM8 LW28A**# 301514- (Assumed))

BME010200400W05

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 69 remains low or high, PCM determines that fan control circuit has malfunction. Diagnostic support note • This is an continuous monitor (other). • The MIL illuminates if the PCM detects the above malfunction condition in the first drive cycle.
• PENDING CODE is available if the PCM detects the above malfunction condition.
• 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 69 • Short to ground in wiring between fan control module terminal B and PCM terminal 69 • Open circuit in wiring between fan control module terminal B and PCM terminal 69
• 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 next step.
No | Go to next step.
2 | INSPECT FAN CONTROL MODULE CONNECTOR FOR POOR CONNECTION • Turn the ignition switch off. • Disconnect fan control module connector. • Check 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 next step.
3 | INSPECT FAN CONTROL MODULE SIGNAL CIRCUIT FOR SHORT TO POWER • Turn the ignition switch to ON (Engine OFF). • Measure voltage between fan control module connector terminal B and body ground. • Is voltage B+? | Yes | Repair or replace harness for open, then go to Step 8.
No | Go to next step.
4 | INSPECT FAN CONTROL MODULE SIGNAL CIRCUIT FOR SHORT TO GROUND • Turn the ignition switch off. • Check continuity between fan control module terminal B and body ground. • Is there continuity? | Yes | Repair or replace harness for open, then go to Step 8.
No | Go to next step.
5 | INSPECT PCM CONNECTOR FOR POOR CONNECTION • Check 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 next step.
6 | INSPECT FAN CONTROL MODULE SIGNAL CIRCUIT FOR OPEN CIRCUIT • Check continuity between fan control module terminal B and PCM terminal 69. • Is there continuity? | Yes | Go to next step.
No | Repair or replace harness for open, then go to Step 8.
7 | INSPECT FAN CONTROL MODULE • Perform fan control module inspection. • Is fan control module normal? | Yes | Go to next step.
No | Replace fan control module, then go to 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 PENDING CODE of same DTC present? | Yes | Replace PCM, then go to next step.
No | Go to next step.
9 | VERIFY AFTER REPAIR PROCEDURE • Perform "After Repair Procedure". (See AFTER REPAIR PROCEDURE [AJ].) • Is there any DTC present? | Yes | Go to applicable DTC inspection. (See DTC TABLE [AJ] (VIN: JM0 LW10J300 301406-, JMZ LW69J7*# 307683-, JM8 LW28J**# 301514-, JM8 LW28A**# 301514- (Assumed)).)
No | Troubleshooting completed.