Suzuki WagonR+ RB310 Service Manual page 2770

DTC 33– THROTTLE POSITION SIGNAL
(THROTTLE OPENING SIGNAL OF UNDER 0% INPUTTED OR INPUT
SIGNAL FIXED TO HIGH (12V) OR LOW (0V))
STEP
1 Check throttle opening signal referring to
Section 6E.
Is it OK?
2 Check DTC of electronic fuel injection system
referring to Section 6E.
Does the DTC show normal code?
3 1) Turn ignition switch OFF and disconnect
ECM couplers.
2) Turn ignition switch ON and check voltage
between terminal "D18" of disconnected
harness side ECM coupler and body ground.
Is it 10 – 14 V?
ACTION
AUTOMATIC TRANSMISSION (4 A / T) 7B-39
1. TCM coupler (viewed from harness side)
2. ECM coupler (viewed from harness side)
YES
Intermittent trouble or
faulty TCM.
Recheck referring to
"Intermittent trouble" in
Section 0B.
Go to Step 3.
Poor connection of
terminal "D18" of ECM
coupler.
If connection is OK,
substitute a known-good
ECM and recheck.
NO
Go to Step 2.
Inspect and repair
referring to DTC table of
electronic fuel injection
system in Section 6E.
"Y/B" wire open or poor
"B1" connection of TCM
coupler.
If wire and connection
are OK, substitute a
known-good TCM and
recheck.