Car hesitates while driving, idles high while sitting

Tiny
FORMULAONEMAN
  • MEMBER
  • 9 POSTS
Would the fresh air leak have caused the 22 code? Can you send me test procedures for the EGR solenoid and valve? The car still hesitated at speed until the light came on.
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Tuesday, October 9th, 2012 AT 3:26 PM
Tiny
HMAC300
  • MECHANIC
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NOTE: Test numbers refer to numbers on diagnostic chart.

1. This test checks if code is result of a hard failure or an intermittent condition.
2. This test simulates conditions for setting code. If control module recognizes change of state,  control module and wiring are okay.
3. This simulates a high signal voltage to check for an open in TPS signal line to control module. Scan tester should recognize this signal and display high TPS voltage.

Diagnostic Aids

A scan tester displays throttle position in volts. Closed throttle voltage should be low. Voltage should increase gradually to about 4.5 volts at a steady rate as throttle angle is increased. If code is intermittent,  see
INTERMITTENTS in TESTS W/O CODES article in this section.

CODEÂ 22Â PCMÂ TERMINALÂ &Â CIRCUITÂ WIRINGÂ IDENTIFICATION
Application PCM Terminal Wire Color
TPS Signal PB7 Dark Blue
TPSÂ Ground PB2 Black ?
TPSÂ Reference PA3 Gray ?
Egr tests in charts
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Tuesday, October 9th, 2012 AT 3:38 PM

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