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ELECTRICALS 207 Sr. No. Displayed DTC Code DTC Description Fault cause Probable trouble Area 39 P0526 - 24 Fan speed sensor circuit - signal stuck high Signal stuck high 1) Loose/ damaged connections. 2) Relay supply line short circuit to battery/ ground. 3) Relay control line short circuit to battery/ ground. 4) Check the continuity from fan relay connector pin to the ECU pin. 5) Check for back out of pins at ECU connector. 6) Faulty/damaged relay. 7) Faulty ECU. 40 P0526 - 23 Fan speed sensor circuit - signal stuck low Signal stuck low 1) Loose/ damaged connections. 2) Relay supply line short circuit to battery/ ground. 3) Relay control line short circuit to battery/ ground. 4) Check the continuity from fan relay connector pin to the ECU pin. 5) Check for back out of pins at ECU connector. 6) Faulty/damaged relay. 7) Faulty ECU. 41 P0626 - 11 Alternator duty cycle signal short to ground Circuit short to ground 1) Loose /damaged connector. 2) Alternator signal line short to ground. 3) Check for back out of pins at both alternator signal line connector and ECU connector. 4) Faulty alternator. 42 P0625 - 15 Alternator duty cycle signal line open or short to battery Circuit short to battery or open 1) Loose /damaged connector. 2) Alternator signal line Short to battery or open load. 3) Check for back out of pins at both alternator signal line connector and ECU connector. 4) Faulty alternator. 43 P0622 - 29 Alternator duty cycle signal not plausible Signal invalid 1) Loose /damaged connector. 2) Alternator signal line short to battery/ ground. 3) Check for back out of pins at both alternator signal line connector and ECU connector. 4) Faulty alternator. 44 P0504 - 2F Brake switch “A”/”B” correlation - Signal erratic Signal erratic 1) Check the continuity from brake light switch connector pins to the ECU pins. 2) Check for damage of pins at both brake light switch connector and ECU connector. 3) Faulty ECU.