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Note On Intermittents

WARNING: This page is about a different car, the 1989 Cadillac Fleetwood and 1989 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.

If an intermittent Code E26 is being set, operate vehicle while observing throttle switch status ("OFF" on ECCP) and throttle angle parameter P.0.1 simultaneously. If throttle switch ever fails to open upon opening of throttle, investigate that circuit for a malfunction. If throttle angle ever jumps to greater than 13 degrees with throttle closed, investigate TPS circuits for a malfunction.

Fig 1: Code E26 Schematic - Shorted Throttle Switch Circuit
G57142
Fig 2: Code E26 Flow Chart - Shorted Throttle Switch Circuit
G111632
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