Test Procedure
-- Perform a preliminary check to verify the customers complaint. Refer to PRELIMINARY CHECK
Start diagnosis
-- Connect the scan tool.
-- Switch ignition on.
-- Using the scan tool, Check the throttle valve position (absolute) at idle stop:
| Diagnostic text | Specified value | |||
|---|---|---|---|---|
| Throttle valve position (absolute) | - | |||
|
3.0 to 25.0% | |||
-- Slowly depress the accelerator pedal to Wide Open Throttle (WOT) stop while observing the percentage display. The percentage display must increase uniformly.
-- Using the scan tool, Check the throttle valve position (absolute) at Wide Open Throttle (WOT) stop:
| Diagnostic text | Specified value | |||
|---|---|---|---|---|
| Throttle valve position (absolute) | - | |||
|
84.0 to 97.0% | |||
-- Switch ignition off.
If specified values are obtained:
-- Fault may be intermittent.
-- Check for loose or corroded connections and any leaks in the Intake system.
-- Check Freeze Frame data for conditions when the DTC set.
-- Go to Final Procedures
If the specified values are not obtained:
-- Remove the throttle valve control module far enough so that the electrical connector can be reached.
-- Switch the ignition On.
-- Disconnect the Throttle Valve Control Module -J338- electrical connector.
-- Using a Multimeter, Check the Throttle Valve Control Module -J338- electrical harness connector terminal 1 to 3 to for voltage.
Specified value: About 5.0 V
-- Switch the ignition OFF.
-- Continue test according to the following table:
| Value | Cause | Test |
|---|---|---|
| If the specified value was not obtained: | Open or shorted circuit | Checking Wiring |
| If the specified value was obtained: | Check reference signal circuit | Checking Wiring |