Suzuki SY413 Service Manual page 3093

6E1-60 ELECTRONIC FUEL INJECTION SYSTEM (G13/G16 ENGINE WITHOUT WU TWC)
B-13 THROTTLE VALVE OPENING SIGNAL CIRCUIT CHECK
(4 A/T VEHICLE ONLY)
STEP
Turn ignition switch ON and check voltage between
"Or" wire terminal of TCM coupler and body ground
1 and confirm it is as specified below.
Is check result satisfactory?
Fig. for STEP 1
Idle
Throttle opening
ACTION
1. TCM
2. "Or" wire terminal
Full open
YES
Signal circuit is in good
condition.
1. ECM
2. TCM
NO
Check each wire
harness, circuit
connection and TP
sensor. If they are OK,
replace ECM.