Toyota Tundra Service Manual: Inspection

INSPECTION

PROCEDURE

1. INSPECT COLUMN SHIFT SHIFT LEVER SUB-ASSEMBLY

(a) Disconnect the transmission control switch connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
6 (IG) - 13 (S)	Shift lever in S, "+" or "-"	Below 1 Ω
5 (SFTU) - 11 (E)	Shift lever held in "+" (Up-shift)
4 (SFTD) - 11 (E)	Shift lever held in "-" (Down-shift)
6 (IG) - 13 (S)	Shift lever not in S, "+" or "-"	10 kΩ or higher
5 (SFTU) - 11 (E)	Shift lever in S
4 (SFTD) - 11 (E)	Shift lever in S

If the result is not as specified, replace the column shift shift lever sub-assembly.

Toyota Tundra Service Manual > Sfi System: Open in Secondary Air Injection System Heater Control Circuit (P144C,P144D)
DESCRIPTION The ECM operates the air pump heater (AI HTR) relay which causes the air pump heater (AI HTR) to operate. DTC No. DTC Detection Condition Trouble Area P144C Open or short in the air pump heater (AI HTR) relay circuit for 5 seconds (1 trip detection logic). Open or short in air pump heate ...

Toyota Tundra Owners Manual