Transmission Warning Light Circuit Check - Light Does Not Come "On" At Ignition Switch On (Vehicle Is Equipped With Engine Diagnosis Connector); Transmission Warning Light Circuit Check - Light Remains "On" At Ignition Switch On (Vehicle Is Equipped With Engine Diagnosis Connector) - Suzuki Grand Vitara Manual

Step
4 4L/N switch signal inspection
1) With ignition switch ON, check voltage between terminal
"E92-4" of TCM connector and ground.
4L/N switch specification
Transfer gear position or "4H": Battery voltage
Transfer gear position "4L" or "N": 0 – 2 V
Is result as specified?
5 Brake light switch signal inspection
1) With ignition switch ON, check voltage between terminal
"E61-34" of ECM connector and ground.
Brake light switch specification
Brake pedal is released: 0 – 1 V
Brake pedal is depressed: Battery voltage
Is result as specified?
Transmission Warning Light Circuit Check – Light Does Not Come "ON" at Ignition Switch ON
(Vehicle is equipped with engine diagnosis connector)
Troubleshooting
Step
1 Combination Meter Power Supply Check
1) Turn ignition switch ON.
Does other indicator / warning lights in combination meter
comes ON?
2 1) TCM power and ground circuit check referring to "TCM
Power and Ground Circuit Check: ".
Is it in good condition?
3 DTC check
1) Check DTC referring to "DTC Check: ".
Is there DTC P1774 or P1775?
4 Combination Meter Function Check
1) Turn ignition switch ON.
Does A/T selector position indicator show correct select
lever position?
Transmission Warning Light Circuit Check – Light Remains "ON" at Ignition Switch ON (Vehicle is
equipped with engine diagnosis connector)
Troubleshooting
Step
1 Diagnostic Trouble Code (DTC) Check
1) Check DTC referring to "DTC Check: ".
Is there any DTC(s)?
www.CarGarage.ir
Action
Action
Action
www.CarGarage.ir
Automatic Transmission/Transaxle:
Yes
Go to Step 5.
Substitute a known-
good TCM and recheck.
Yes
Go to Step 2.
Go to Step 3.
Go to applicable DTC
diag. flow.
Replace combination
meter.
Yes
Perform DTC Flow to
repair and retry.
5A-45
No
Faulty "4L" switch or its
circuit. If OK, substitute
a known-good TCM and
recheck.
Mis-adjusted brake light
switch, faulty brake light
switch or its circuit. If
OK, substitute a known-
good TCM and recheck.
S5JB0A5104063
No
Repair combination
meter power supply
circuit referring to
"Combination Meter
Circuit Diagram: in
Section 9C".
Repair or replace.
Go to Step 4.
Substitute a known-
good TCM and recheck.
S5JB0A5104064
No
Substitute a known-
good TCM and recheck.
If OK, substitute a
known-good
combination meter and
recheck.