Suzuki 2006 SX4, Service Manual

Page: 155 / 1478

Engine General Information and Diagnosis: 1A-111
DTC Troubleshooting
DTC P1510: ECM Back-Up Power Supply Malfunction
S6RW0C1104063
Wiring Diagram
Step Action Yes No
1 Was “Engine and Emission Control System Check”
performed? Go to Step 2. Go to “Engine and
Emission Control
System Check”.
2 IMT valve control circuit check
1) Disconnect connectors from IMT valve and ECM with
ignition switch turned OFF.
2) Check for proper terminal connection to IMT valve and
ECM connectors.
3) If connection are OK, check that IMT valve circuit is as
follows.
• Wiring harness resistance of IMT valve control circuit
is less than 3
Ω
.
• Insulation resistance of IMT valve control circuit is
infinity between IMT valve connector and vehicle body
ground.
• Insulation resistance of wire harness is infinity
between IMT valve control terminal and each other
terminal at IMT valve connector.
• Circuit voltage of IMT vacuum solenoid valve control
circuit is 0 – 1 V with ignition switch turned ON.
Are they in good condition?
Go to Step 3. Repair or replace IMT
valve control circuit.
3 IMT vacuum solenoid valve check
1) Check IMT valve referring to “IMT Valve Actuator
Inspection in Section 1C”.
Is it in good condition?
Substitute a known-
good ECM and recheck. Replace IMT valve.
E01 C01
3 4
18 19
5 6 7 10 11
17 20
47 46 49 50 51
21 22
52
16 25
9
24
14
29
55 57 54 53
59
60 58
2
26 27 28
15
30
56 48
32 31 34 35 36 37 40 42 39 38
44
45 43 41 33
1 12 13
23
8 3 4
18 19
5 6 7 10 11
17 20
47 46 49 50 51
21 22
52
16 25
9
24
14
29
55 57 54 53
59
60 58
2
26 27 28
15
30
56 48
32 31 34 35 36 37 40 42 39 38
44
45 43 41 33
1 12 13
23
8
2
1
E01-2 WHT/BLU WHT/RED
I7RW01110080-01
1. ECM 2. “DOME” fuse