Triumph Daytona 955i, Руководство по обслуживанию

Страница: 213 / 375

9 FUEL SYSTEM/ENGINE MANAGEMENT
TJIUM1 MPII
COOLING FAN RELAY
Fault Code Possible cause
Action
P1 551 Cooling fan relay system fault
View & note diagnostic tool `sensor' data.
Ensure relay connector is secure and relay
is operational — renew if faulty.
Disconnect ECM and proceed to pinpoint
testl:-
P1552 Open circuit, or short circuit to earth
P1553
Short circuit to Disconnect relay and proceed to pinpoint
test 4
Pinpoint Tests
Test
Result Action
1
Check cable and terminal integrity:
— ECM pin 25
OK Disconnect relay and proceed to test 2
Faulty Rectify fault, proceed to test 5
2 Check cable for short circuit:
— ECM pin 25 to earth
OK Proceed to test 3
Short circuit Locate and rectify wiring fault, proceed to
test 5
3 Check cable continuity:
— Relay pin 4 to ECM pin 25
— Relay pin 6 to ECM relay pin 8
OK
Proceed to test 4
Open circuit Locate and rectify wiring fault, proceed to
test 5
4 Check cable for short circuit:
— ECM pin 25 to ECM pin 1
OK Proceed to test5
Short circuit Locate and rectify wiring fault, proceed to
test 5
5 Reconnect harness, clear fault code and
run diagnostic tool function test to visually
verify operation of cooling fan
OK Action complete — quit test
Fault still present
Contact Triumph service
Circuit Diagram
Cooling Fan
ECM Main
Power Relay
''F—
B 2 '
N
Fusebox
Cooling Fan
8
5
[° 1J
Relay
a
uB
6
a
6
s
a a
y Z
UB z m W
Y }
Z m
Engine
Control
Module
9.72