NANO

1131 / 1980

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 cyclesignal 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.